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Introducción. El cáncer de riñón es la undécima neoplasia maligna más común en los Estados Unidos Mexicanos. El carcinoma de células claras de riñón (CCR) es considerado la estirpe más frecuente y representa el 2-3 % de todos los cánceres a nivel mundial. En el contexto de la enfermedad metastásica, por lo general se identifica un tumor renal primario y las metástasis se localizan en pulmón, hueso, hígado, cerebro y, raramente, en tejidos blandos. Los pacientes con metástasis a tejidos blandos no tienen síntomas en las etapas iniciales y generalmente se identifican sólo cuando las lesiones aumentan de tamaño o durante el estudio de la pieza de resección quirúrgica. Caso clínico. Se presenta el caso de una paciente en la séptima década de la vida, con una metástasis en tejidos blandos de la región sacra, de 10 años de evolución posterior a una nefrectomía secundario a CCR. Resultados. Hallazgos clínicos e imagenológicos de un tumor bien delimitado. Se realizó resección quirúrgica de la lesión, bajo anestesia regional, con extirpación completa. Conclusión. Se recomienda que los pacientes con un sitio metastásico resecable y solitario sean llevados a resección quirúrgica con márgenes libres, como fue el caso de nuestra paciente, por su fácil acceso y ser una lesión única. En el CCR, además de su tratamiento quirúrgico inicial, es indispensable una estrecha vigilancia con examen físico e imágenes transversales, para detectar la presencia de metástasis y con ello evitar tratamientos tardíos.
Introduction. Kidney cancer is the eleventh most common malignancy in the United States of Mexico. Carcinoma renal cell (CRC) is considered the most frequent type and represents 2-3% of all cancers worldwide. In the setting of metastatic disease, a primary renal tumor is usually identified, and metastases are located in the lung, bone, liver, brain, and rarely in soft tissue. Patients with soft tissue metastases do not have symptoms in the initial stages and are generally found only when the lesions increase in size or during the study of the surgical resection piece. Clinical case. In this case, we report a female patient in the seventh decade of life with a soft tissue metastasis located in the sacral region, 10 years after a nephrectomy secondary to CRC. Results. Clinical and radiological findings of a well-defined tumor. Surgical resection of the lesion is performed under regional anesthesia with complete excision. Conclusions. It is recommended that patients with a resectable and solitary metastatic site be candidates for surgical resection with free margins, as was the case with our patient due to its easy access and single lesion. In CRC, in addition to its initial surgical treatment, close surveillance with physical examination and cross-sectional images is essential to monitor the presence of metastases and thus avoid late treatments.
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Humanos , Carcinoma de Células Renales , Neoplasias Renales , Siembra Neoplásica , Neoplasias de los Tejidos Blandos , Diagnóstico Diferencial , Metástasis de la NeoplasiaRESUMEN
Objective:To investigate the value of an MRI and digital pathology images based omics nomogram for the prediction of recurrence risk in soft tissue sarcoma (STS).Methods:This was a retrospective cohort study. From January 2016 to March 2021, 192 patients with STS confirmed by pathology in the Affiliated Hospital of Qingdao University were enrolled, among which 112 patients in the Laoshan campus were enrolled as training set, and 80 patients in the Shinan campus were enrolled as validation set. The patients were divided into recurrence group ( n=87) and no recurrence group ( n=105) during follow-up. The clinical and MRI features of patients were collected. The radiomics features based on fat saturated T 2WI images and pathomics features based on digital pathology images of the lesions were extracted respectively. The clinical model, radiomics model, pathomics model, radiomics-pathomics combined model, and omics nomogram which combined the optimal prediction model and the clinical model were established by multivariate Cox regression analysis. The concordance index (C index) and time-dependent area under the receiver operating characteristic curve (t-AUC) were used to evaluate the performance of each model in predicting STS postoperative recurrence. The DeLong test was used for comparison of t-AUC between every two models. The X-tile software was used to determine the cut-off value of the omics nomogram, then the patients were divided into low risk ( n=106), medium risk ( n=64), and high risk ( n=22) groups. Three groups′ cumulative recurrence-free survival (RFS) rates were calculated and compared by the Kaplan-Meier survival curve and log-rank test. Results:The performance of the radiomics-pathomics combined model was superior to the radiomics model and pathomics model, with C index of 0.727 (95% CI 0.632-0.823) and medium t-AUC value of 0.737 (95% CI0.584-0.891) in the validation set. The omics nomogram was established by combining the clinical model and the radiomics-pathomics combined model, with C index of 0.763 (95% CI 0.685-0.842) and medium t-AUC value of 0.783 (95% CI0.639-0.927) in the validation set. The t-AUC value of omics nomogram was significantly higher than that of clinical model, TNM model, radiomics model, and pathomics model in the validation set ( Z=3.33, 2.18, 2.08, 2.72, P=0.001, 0.029, 0.037, 0.007). There was no statistical difference in t-AUC between the omics nomogram and radiomics-pathomics combined model ( Z=0.70, P=0.487). In the validation set, the 1-year RFS rates of STS patients in the low, medium, and high recurrence risk groups were 92.0% (95% CI 81.5%-100%), 55.9% (95% CI 40.8%-76.6%), and 37.5% (95% CI 15.3%-91.7%). In the training and validation sets, there were statistically significant in cumulative RFS rates among the low, medium, and high groups of STS patients (training set χ2=73.90, P<0.001; validation set χ2=18.70, P<0.001). Conclusion:The omics nomogram based on MRI and digital pathology images has favorable performance for the prediction of STS recurrence risk.
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Abstract Lipomas are the most common soft-tissue tumors in the human body, but their location in the hand is rare. Symptomatic hand lipomas, due to nerve compression, are even rarer. We present a case of median nerve neuropathy as a result of a giant palm lipoma, located on the thenar and hypothenar areas of the hand. The patient had typical symptoms of carpal tunnel syndrome, along with compromised thumb motion. Intraoperatively, the recurrent motor branch of the median nerve was sitting on the lipoma under a great tension. This particular location of the motor branch of the median nerve in relation to the lipoma makes this case unique. The tumor was excised protecting the neurovascular structures, and a few weeks later the patient regained full thumb motion, grip strength, and resolution of dysesthesia.
Resumo Os lipomas são os tumores de partes moles mais comuns no corpo humano, mas sua localização na mão é rara. Os lipomas de mão que causam sintomas por compressão do nervo são ainda mais raros. Apresentamos um caso de neuropatia do nervo mediano decorrente de um lipoma palmar gigante, localizado nas regiões tenar e hipotenar da mão. A paciente apresentava sintomas típicos de síndrome do túnel do carpo, além de comprometimento dos movimentos do polegar. Durante a cirurgia, o ramo motor recorrente do nervo mediano repousava sobre o lipoma sob grande tensão. Esta localização particular do ramo motor do nervo mediano em relação ao lipoma torna este caso único. O tumor foi extirpado, protegendo as estruturas neurovasculares e, poucas semanas depois, a paciente havia recuperado totalmente os movimentos do polegar e força de preensão, além de apresentar resolução da disestesia.
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Humanos , Femenino , Persona de Mediana Edad , Neoplasias de los Tejidos Blandos/terapia , Síndrome del Túnel Carpiano , Neuropatía Mediana , Mano/cirugía , LipomaRESUMEN
Objective:To analyze the differences in clinical outcomes and toxicities between postoperative radiotherapy alone and postoperative radiochemotherapy for soft tissue sarcoma (STS), as well as the related factors affecting clinical prognosis of STS patients.Methods:Retrospective analysis of patients diagnosed with primary STS admitted to Zhejiang Cancer Hospital from May 2012 to May 2019 was performed, who received adjuvant radiotherapy after surgery, combined with or without postoperative chemotherapy. A total of 100 patients were enrolled and divided into postoperative radiotherapy group ( n=52) and postoperative radiochemotherapy group ( n=48). The median follow-up time was 65 months (24-124 months). The local recurrence-free survival (LRFS), distant metastasis-free survival (DMFS), overall survival (OS), and treatment-related toxicities were recorded in two groups. The survival rate was calculated by Kaplan-Meier analysis. Log-rank test was used for univariate analysis, and Cox model was used for multivariate analysis. Results:In multivariate analysis, the maximum tumor diameter was an independent predictor of local tumor recurrence ( HR=4.80, 95% CI=1.16-19.85, P=0.031), distant metastasis ( HR=4.67, 95% CI=1.53-14.26, P=0.007) and OS ( HR=4.10, 95% CI=1.35-12.48, P=0.013). In addition, the degree of myelosuppression in patients in postoperative radiochemotherapy was significantly higher than that in their counterparts in postoperative radiotherapy group ( P<0.001). Conclusions:In the limited number of patients, radiochemotherapy has no advantages over radiotherapy alone in distant metastasis or survival rate. Besides, it increases toxicities, but the overall tolerability is favorable. It is necessary to conduct prospective randomized studies in a large population and subgroup analysis of histological subtypes, aiming to obtain results with better reference value.
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Objective:To investigate clinical, histopathological, molecular genetic characteristics, and immunophenotypes of superficial CD34-positive fibroblastic tumor (SCPFT) .Methods:The pathological data were collected from 19 cases of SCPFT from January 2015 to July 2022 in the First Affiliated Hospital of Nanjing Medical University, and analyzed retrospectively.Results:In total, 19 cases of SCPET were enrolled, including 8 males and 11 females. Their age at onset ranged from 16 to 67 years, and the disease duration ranged from 3 months to 3 years. Tumors occurred in the thigh (6 cases), back (4 cases), shoulder (3 cases), abdominal wall (2 cases), popliteal fossa (1 case), lower leg (1 case), foot (1 case) and forehead (1 case). The tumor lengths were 0.8 - 4 (2.36 ± 0.76) cm, with relatively clear borders. Surgical excision was performed in all the 19 cases, and 1 case experienced recurrence. Histopathological examination showed that tumors were located in the dermis and subcutis, and infiltrated the peripheral fat tissues or the dermis; tumors were composed of abundant spindle cells and polygonal cells arranged in interlacing fascicles; cells with nuclear pleomorphism were observed in all cases, and were characterized by large, hyperchromatic and irregular nuclei, intranuclear pseudoinclusions, and prominent nucleoli; the mitotic figure was rare, and tumor necrosis was not found; inflammatory cell infiltration to different extents was observed in the tumor stroma, and lymphocyte sheaths were observed around the tumors in 2 cases. Immunohistochemical staining showed strong diffuse expression of CD34 in the tumor cells in all the 19 cases, the Ki-67 proliferation index was < 10% in 18 cases, and CKpan (2/12), desmin (2/15), and smooth muscle actin (1/19) were focally expressed. Fluorescence in situ hybridization for the detection of PRDM10 gene rearrangements was performed in 3 cases, and identified PRDM10 rearrangements in 2 cases, including 1 case of SCPFT accompanied by lymphocyte sheaths without EWSR1 rearrangements. Conclusion:SCPFT is an intermediate fibroblastic tumor with no characteristic clinical manifestations, often accompanied by PRDM10 rearrangements, and its diagnosis depends on histopathological patterns.
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Objective:To explore the role and value of indocyanine green (ICG) fluorescence imaging in the surgery of bone and soft tissue tumors.Methods:A total of 38 patients with bone and soft tissue tumors, including 17 males and 21 females, aged 36±21 years (range 5-75 years), who underwent resection with application of ICG-based NIR imaging were retrospectively analyzed. ICG was intravenously administrated at a dose of 2 mg/kg on the day before surgery. Intraoperative NIR imaging was performed to confirm the tumor fluorescence and to detect residual tumor after tumor resection. The NIR imaging was post hoc analyzed to explore the influence factor of tumor stain rate and SBR value.Results:Tumor staining with ICG was successful in 34 of the 38 patients, with an overall staining rate of 90%. The ICG tumor stain rate was not influenced by different pathology types, malignant or benign pathology, the reception of neoadjuvant chemotherapies or not, and the length of time between drug administration and surgery ( P>0.05). The median SBR of 34 patients with successful tumor staining was 2.9 (2.3, 5.7). Different pathological types, malignant or benign pathology, whether to receive neoadjuvant chemotherapy, preoperative ICG administration time, preoperative dose of denosumab administration in giant cell tumor of bone patients and tumor response to neoadjuvant chemotherapy had no significant effects on SBR ( P>0.05). After tumor resection, a total of 57 pieces of tissue with residual fluorescence signals were detected and resected under the fluorescence guidance, 30 of which were pathologically confirmed to contain residual tumor lesions, with an overall accuracy of 53%. The accuracy of intralesional resection was significantly higher than that of en bloc resection (71% vs. 16%, χ 2=15.51, P=0.000). Conclusion:A high percentage of bone and soft tissue tumors can be stained with ICG. The tumor stain of ICG was stable and not easily influenced by external factors. This technique was useful to detect residual tumors, especially after piecemeal resection.
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Objective:To explore the risk factors of recurrence after resection of thigh soft tissue malignant tumors and the evaluation of the postoperative lower limb function.Methods:A total of 211 patients who underwent thigh soft tissue malignant tumor resection in the Department of Orthopaedics of the second affiliated Hospital of Medical College of Zhejiang University from May 2011 to May 2021 were retrospectively analyzed, including 117 males and 94 females, aged 53 (43, 65) years. There were 59 cases of atypical/well-differentiated liposarcoma, 30 cases of other types of liposarcoma, 33 cases of malignant fibrous histiocytoma, 19 cases of fibrosarcoma, 12 cases of rhabdomyosarcoma, 12 cases of leiomyosarcoma, 9 cases of synovial sarcoma, and 37 cases of others. The tumor involvement of muscle, bone, blood vessel, nerve tissue and intermuscular compartment, postoperative Musculoskeletal Tumor Society (MSTS) functional score and recurrence were recorded. The relationship between anatomical structure and postoperative recurrence was analyzed by Cox logistic regression to determine risk factors; the cumulative recurrence rate of different compartment groups (medial compartment, anterior compartment, and posterior compartment) were compared; The Box plot was used to compare the postoperative function of patients with resection of different anatomical structures (e.g., vastus lateralis, biceps femoris, femur, etc.).Results:A total of 34 out of 211 patients relapsed, with a recurrence rate of 16.1%. The recurrence time ranged from 2.6 months to 91.6 months after operation, with a median recurrence time of 37.0 (18.2, 52.8) months. Three independent risk factors were found to be associated with recurrence, namely: pathological grade [ HR=3.86, 95% CI(1.75, 8.51)], involvement of vastus intermedius [ HR=3.05, 95% CI(1.53, 6.06)], and involvement of vastus medialis [ HR=3.17, 95% CI(1.56, 6.41)]. The recurrence rate of patients with anterior chamber tumor resection was 35.3%, which was higher than that of patients without tumor resection (16.2%), and the difference was statistically significant ( P=0.020). There was no significant difference in recurrence rate between patients with medial chamber tumor resection and patients without tumor resection ( P>0.05). The recurrence rate of patients with posterior compartment tumor resection was 12.3%, which was lower than that of unresectable patients (37.6%), and the difference was statistically significant ( P=0.002).The postoperative MSTS score of 167 patients averaged 26±3.2 points (9-30 points). After intraoperative resection of part of the femur, vastus intermedius, vastus medialis, and rectus femoris, the patient's function was relatively poor [corresponding median MSTS score: 25 (23, 28), 26 (24 28), 26 (24,28), 26(24, 27)]. Conclusion:The risk factors for local recurrence after resection of thigh soft tissue malignant tumors include: pathological grade of the tumor, and whether the vastus intermedius or vastus medialis is involved. Anterior compartment tumors have a higher recurrence rate after surgery. If the tumor involves the above-mentioned anatomical structures, more attention should be paid to the risk of local recurrence after surgery.
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ABSTRACT Objective: To conduct an epidemiologic review, analyzing treatment, evolution, and survival of soft tissue sarcomas. Methods: Retrospective study based on medical records of patient with STS treated by the Orthopedic Oncology Group at the Santa Casa de São Paulo, from 2006 to 2019. Data from 121 patients were analyzed according to age, sex, histological type, tumor location, treatment, previous surgery in a non-specialized service, local recurrences, lung metastases, and survival analysis. Results: The most frequent location was the thigh. Patients who underwent surgery with a non-specialized group had higher rates of local recurrence and those with pulmonary metastasis had a lower survival rate. Conclusion: STS can occur at any age and the prevalence of the histological type depends on the patients' age group. Level of Evidence II, Prognostic Study.
RESUMO Objetivo: Conduzir uma avaliação epidemiológica analisando tratamento, evolução e sobrevida dos sarcomas de partes moles (SPMs). Métodos: Estudo retrospectivo de prontuários de pacientes com SPM tratados pelo Grupo de Oncologia Ortopédica da Santa Casa de Misericórdia de São Paulo, no período de 2006 a 2019. Foram analisados os dados de 121 pacientes referentes a idade, sexo, tipo histológico, localização do tumor, tratamento, cirurgia prévia em serviço não especializado, presença de recidivas, metástases pulmonares e análise de sobrevida. Resultados: A localização mais frequente foi a coxa. Verificou-se que pacientes que realizaram cirurgia com grupo não especializado tiveram maiores índices de recidiva local, e aqueles com metástase pulmonar tiveram menor sobrevida. Conclusão: Os SPMs podem ocorrer em qualquer idade, e a prevalência do tipo histológico depende da faixa etária dos pacientes. Nível de Evidência II, Estudo Prognóstico.
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Fundamento: Los angiolipomas son tumores benignos que se presentan en adultos con una localización, preferentemente, en el espacio epidural posterior torácico. Objetivo: Presentar un caso que debutó con un traumatismo axial lumbosacro donde se evidenció una localización poco común de la lesión y sin relación con las estructuras del canal raquídeo. Presentación del caso: Hombre de 25 años que se cayó y debido a ello se le hizo un traumatismo directo en la región sacrococcígea con dolor y aumento de volumen regional, asociado a parestesias glúteas. Los estudios radiológicos evidenciaron una fractura del cóccix y la presencia de una lesión ubicada en las partes blandas, de aspecto redondeado, homogéneo, sólido, de poco más de 50 mm de diámetro. Se le realizó tratamiento quirúrgico que consistió en coccigectomía subperióstica y exéresis macroscópica de la masa. El estudio histológico concluyó el diagnóstico de un angiolipoma. Conclusiones: Los angiolipomas son tumores raros que tienen características radiológicas peculiares, requieren de alta sospecha clínico-imagenológica para indicar los estudios y el tratamiento. La exéresis total es recomendada para evitar la recurrencia y mejorar el pronóstico.
Background: Angiolipomas are benign tumors that appear in adults with special location in the posterior thoracic epidural position. Objective: To present a case that appeared with a lumbosacral axial trauma where a non-common lesion location was evidenced with no relation among the structures of the spinal canal. Case presentation: 25-year-old man who fell down, consequently suffered a painful direct trauma to the sacrococcygeal region and increased regional volume, associated with gluteal paresthesias. Radiological studies showed a fracture of the coccyx and presence of a lesion located in the soft tissues, with a rounded, homogeneous, solid aspect, a little more than 50 mm in diameter. Surgical treatment consisted of subperiosteal coccygectomy and macroscopic excision of the mass. Histological study concluded the diagnosis of an angiolipoma. Conclusions: Angiolipomas are rare tumors with peculiar radiological features, they require high clinical-imaging suspicion for studies and treatment. Total excision is recommended to avoid recurrence and improve prognosis.
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Región Sacrococcígea/diagnóstico por imagen , Neoplasias de los Tejidos Blandos/diagnóstico por imagen , Cóccix/cirugía , Cóccix/lesiones , Angiolipoma/cirugíaRESUMEN
Os sarcomas de partes moles são neoplasias malignas raras originadas do mesênquima, mais comumente encontradas em membros. A ressecção cirúrgica com margens livres acima de 1cm é fundamental para obter a cura do paciente. A radioterapia pode ser combinada ao tratamento em casos selecionados. A reconstrução dos membros superiores após ressecções alargadas é um desafio. O retalho miocutâneo do músculo grande dorsal (RMGD) é uma opção em casos de lesões em membros superiores, sobretudo terço proximal e médio do braço, com preservação da função do membro e fechamento primário da área de ressecção. Relatamos dois casos de ressecção e reconstrução do braço utilizando RMGD com foco na descrição da técnica cirúrgica.
Soft tissue sarcomas are rare malignant neoplasms arising from the mesenchyme, most commonly found in the limbs. Surgical resection with free margins greater than 1 cm is essential to obtain a cure for the patient. Radiation therapy can be combined with treatment in selected cases. Reconstruction of the upper limbs after extended resections is a challenge. The latissimus dorsi myocutaneous flap (LDMF) is an option in injuries to the upper limbs, especially the proximal and middle thirds of the arm, with preservation of limb function and primary closure of the resection area. We report two cases of arm resection and reconstruction using LDMF, focusing on the surgical technique description.
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Musculoskeletal tumors are uncommon. However, the true burden of all bone and soft tissue tumors of extremities is underestimated. Usually, the diagnosis of sarcomas is missed or delayed. Therefore, an adequate clinical and radiological assessment, along with the awareness and application of simple guidelines for referral to a specialized center, are of utmost importance. These are critical steps for an appropriate diagnosis and treatment of sarcomas, improving their prognosis.
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Humanos , Adolescente , Derivación y Consulta , Sarcoma/terapia , Sarcoma/diagnóstico por imagen , Neoplasias de los Tejidos Blandos/terapia , Neoplasias de los Tejidos Blandos/diagnóstico por imagen , Neoplasias Óseas/terapia , Neoplasias Óseas/diagnóstico por imagen , Neoplasias de los Músculos/terapia , Neoplasias de los Músculos/diagnóstico por imagen , Pronóstico , Guías de Práctica Clínica como Asunto , Diagnóstico Tardío , Diagnóstico ErróneoRESUMEN
Context: Soft tissue neoplasms are infrequent in children with sarcomas accounting for approximately 7% of all pediatric malignancies. Morphologic diagnosis is challenging due to overlapping features. Subtyping and categorization of these lesions are difficult on fine-needle aspiration cytology (FNAC) alone owing to tumor heterogeneity and limited material in some cases. Tru-cut biopsies obtain adequate tumor tissue for ancillary studies besides conventional histology. Aim: The study aims to explore the role of tru-cut biopsy to arrive at a definitive diagnosis. The study also highlights the correlation between FNAC and histopathology on tru-cut biopsy besides explaining the significance of a panel of immunohistochemistry (IHC) markers for histological categorization and subtyping. Materials and Methods: A total of 61 children from infancy to 18 years were included in the study. Closed biopsy procedures like FNAC and tru-cut biopsy were performed, and the tru-cut biopsy specimen was subjected to a panel of immunohistochemical markers. Results: Fisher's exact test for sensitivity and specificity towards detection of malignancy was 83% and 86%, respectively for FNAC. For tru-cut biopsy, sensitivity was 94% and specificity was 91%. The two-sided P value (<0.0001) was extremely significant. Cohen's Kappa coefficient value for tru-cut biopsy was 0.772 suggesting a substantial strength of agreement. Tru-cut with IHC had a Kappa value of 0.866 suggesting greater agreement with histopathology. Conclusion: Tru-cut biopsy is a simple, safe, and reliable adjunct to the FNAC. Instead, immunohistochemistry enhances the diagnostic accuracy.
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Introdução: Os lipomas saÌo esporaÌdicos na maÌo e representam menos de 5% dos tumores de partes moles nesta topografia. Os lipomas gigantes, ainda menos comuns, saÌo definidos por terem um diaÌmetro maior do que 5cm. Métodos: Executamos uma anaÌlise retrospectiva dos casos de pacientes com lipomas gigantes de maÌo, atendidos no periÌodo de 2017-2020, no Hospital Pasteur e Hospital de Clínicas, em Montevidéu, Uruguai. Resultados: Obtivemos quatro pacientes no período estudado. A idade de apresentaçaÌo foi entre 51 e 62 anos (meÌdia de 57 anos). TreÌs dos lipomas eram intramusculares profundos e um era superficial aos muÌsculos regionais. O maior possuiÌa eixo mais extenso de 70mm. Todos eram sintomaÌticos. A ressecçaÌo marginal foi realizada em todos eles, e o poÌs-operatoÌrio transcorreu sem intercorreÌncias ou recorrências. A histopatologia confirmou lipoma tiÌpico em três casos, e lipoma com metaplasia óssea no outro. Conclusão: Lipomas gigantes de mão se apresentam como tumores indolores e de crescimento lento, que podem ser sintomaÌticos ao comprimir estruturas adjacentes. A ressonaÌncia magneÌtica eÌ o estudo de imagem escolhido para estes casos. O tratamento aplicável eÌ a ressecçaÌo ciruÌrgica marginal e a recorreÌncia eÌ pouco comum.
Introduction: Lipomas are sporadic in hand and represent less than 5% of soft tissue tumors in this topography. Giant lipomas, even less common, are defined as having a diameter greater than 5 cm. Methods: We performed a retrospective analysis of the cases of patients with giant lipomas of the hand seen in the period 2017-2020, at Hospital Pasteur and Hospital de Clínicas, in Montevideo, Uruguay. Results: We obtained four patients during the study period. The age of presentation was between 51 and 62 years (mean 57 years). Three lipomas were deep intramuscular, and one was superficial to the regional muscles. The largest had a longer axle of 70mm. All were symptomatic. Marginal resection was performed in all of them, and the postoperative period was uneventful or recurrent. Histopathology confirmed typical lipoma in three cases and lipoma with bone metaplasia in the other. Conclusion: Giant lipomas of the hand present as painless, slow-growing tumors that may be symptomatic when compressing adjacent structures. Magnetic resonance imaging is the imaging study of choice for these cases. The applicable treatment is marginal surgical resection, and recurrence is uncommon.
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Resumen Las lesiones que simulan tumores en el sistema musculoesquelético se definen como lesiones no neoplásicas benignas que pueden confundirse, tanto por la clínica como radiológicamente, con neoplasias. La etiología y las localizaciones anatómicas de las lesiones son variables, desde variantes normales hasta lesiones traumáticas, inflamatorias o metabólicas. Con un adecuado interrogatorio, una exhaustiva exploración física y una apropiada selección de métodos por imágenes, se pueden diferenciar las lesiones tumorales de las no tumorales. En los casos en que no se logra certeza diagnóstica se debe recurrir a la biopsia para descartar malignidad. Se analizan ocho casos del Comité de Tumores Óseos y Partes Blandas de nuestra institución con diagnósticos presuntivos de lesiones tumorales y biopsias negativas para células neoplásicas. La etiología de las lesiones de los ocho pacientes fue calcificación heterotópica con esclerosis ósea, lesión por estrés, hematoma organizado, absceso, infiltración de médula ósea con área respetada, remodelación ósea, cambios reparativos y esteatonecrosis.
Abstract Tumor mimicking lesions in the musculoskeletal system are defined as benign non-neoplastic entities that may be clinically and/or radiologically confused with neoplasms. The etiology and anatomical locations of these lesions vary from normal variants to traumatic, inflammatory or metabolic lesions. With adequate interrogation, physical examination and appropriate selection of imaging methods, tumor lesions can be differentiated from non-tumor lesions. In cases where diagnostic certainty is not achieved, biopsy should be used to rule out malignancy. We analyzed eight cases from the Bone and Soft tissue Tumors Committee in our institution with presumptive diagnosis of tumor lesions and negative biopsies for neoplastic cells. We found eight patients being these lesions heterotopic calcification with bone sclerosis, stress injury, organized hematoma, abscesses, bone marrow infiltration with respected area, bone remodeling, reparative changes and steatonecrosis.
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Objective:To investigate the value of a preoperatively MRI-based deep learning (DL) radiomics machine learning model to distinguish low-grade and high-grade soft tissue sarcomas (STS).Methods:From November 2007 to May 2019, 151 patients with STS confirmed by pathology in the Affiliated Hospital of Qingdao University were enrolled as training sets, and 131 patients in the Affiliated Hospital of Shandong First Medical University and the Third Hospital of Hebei Medical University were enrolled as external validation sets. According to the French Federation Nationale des Centres de Lutte Contre le Cancer classification (FNCLCC) system, 161 patients with FNCLCC grades Ⅰ and Ⅱ were defined as low-grade and 121 patients with grade Ⅲ were defined as high-grade. The hand-crafted radiomic (HCR) and DL radiomic features of the lesions were extracted respectively. Based on HCR features, DL features, and HCR-DL combined features, respectively, three machine-learning models were established by decision tree, logistic regression, and support vector machine (SVM) classifiers. The area under the receiver operating characteristic curve (AUC) was used to evaluate the performance of each machine learning model and choose the best one. The univariate and multivariate logistic regression were used to establish a clinical-imaging factors model based on demographics and MRI findings. The nomogram was established by combining the optimal radiomics model and the clinical-imaging model. The AUC was used to evaluate the performance of each model and the DeLong test was used for comparison of AUC between every two models. The Kaplan-Meier survival curve and log-rank test were used to evaluate the performance of the optimal machine learning model in the risk stratification of progression free survival (PFS) in STS patients.Results:The SVM radiomics model based on HCR-DL combined features had the optimal predicting power with AUC values of 0.931(95%CI 0.889-0.973) in the training set and 0.951 (95%CI 0.904-0.997) in the validation set. The AUC values of the clinical-imaging model were 0.795 (95%CI 0.724-0.867) and 0.615 (95%CI 0.510-0.720), and of the nomogram was 0.875 (95%CI 0.818-0.932) and 0.786 (95%CI 0.701-0.872) in the training and validation sets, respectively. In validation set, the performance of SVM radiomics model was better than those of the nomogram and clinical-imaging models ( Z=3.16, 6.07; P=0.002,<0.001). Using the optimal radiomics model, there was statistically significant in PFS between the high and low risk groups of STS patients (training sets: χ2=43.50, P<0.001; validation sets: χ2=70.50, P<0.001). Conclusion:Preoperative MRI-based DL radiomics machine learning model has accurate prediction performance in differentiating the histopathological grading of STS. The SVM radiomics model based on HCR-DL combined features has the optimal predicting power and was expected to undergo risk stratification of prognosis in STS patients.
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ABSTRACT Objective: To evaluate cases of soft tissue tumors at the Orthopedic Oncology service of the PUC-Campinas Hospital and determine the epidemiological profile in the period from February 2012 to November 2019, associating the participation of a non-reference hospital in the approach and treatment of the pathology. Methods: This study evaluated 72 patients aged 18 to 81 years, of both sexes and diagnosed with soft tissue tumor and divided into two groups: (I) primary etiology and (II) metastatic etiology. Results: Of 146 patients admitted, 22 resulted in deaths, with 9 patients from Group I, and 13 from Group II. For all patients with soft tissue tumor, aged between 51 and 58 years, admitted in the period, the probability of survival after 46 months was 71.84%, Group I's was 22.7% and Group II's 91.43%. Conclusion: Despite the scarcity of epidemiological data related to soft tissue tumor, the data appreciated in the hospital's service, not a reference in treating this type of condition, are compatible with the data presented in specialized hospitals in Brazil, thus, in confluence with the literature. Level of Evidence III, Comparative, Prognostic and Retrospective Study.
RESUMO Objetivo: Avaliar casos de tumores de partes moles do Serviço de Oncologia Ortopédica do Hospital PUC-Campinas e determinar o perfil epidemiológico no período de fevereiro de 2012 a novembro de 2019, associando à participação de um hospital que não é referência na abordagem e tratamento da patologia. Métodos: Foi realizada uma análise exploratória de dados com 72 pacientes entre 18 e 81 anos, de ambos os sexos e com diagnóstico de tumor de partes moles. Eles foram avaliados e divididos em dois grupos: (I) de etiologia primária e (II) de etiologia metastática Resultados: Do total de 146 pacientes admitidos, 22 vieram a óbito, sendo 9 pacientes do Grupo I, e 13 do Grupo II. Para todos os pacientes com tumor de partes moles, com idade entre 51 e 58 anos, admitidos no período, a probabilidade de sobrevida após 46 meses foi de 71,84%, enquanto do Grupo I foi de 22,7%, e do Grupo II foi de 91,43%. Conclusão: Apesar da escassez de dados epidemiológicos relacionados ao tumor de partes moles, os dados apreciados no serviço do hospital, que não é referência no tratamento dessa condição, são compatíveis com os dados apresentados em hospitais especializados no Brasil, assim, corroborando a literatura. Nível de Evidência III, Estudo Retrospectivo Comparativo Prognóstico.
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RESUMEN Introducción: Los tumores de partes blandas son un grupo heterogéneo de lesiones tanto benignas como malignas. El origen histológico es diverso y entre ellos se encuentra el vascular como el hemangioma. Objetivo: Conocer un paciente con hemangioma cavernoso de partes blandas del pie derecho. Caso clínico: Paciente masculino de 21 años de edad, blanco sin antecedentes mórbidos de salud, acude a la consulta externa de Ortopedia y Traumatología por presentar una bola a nivel de la planta del pie derecho acompañada de dolor. Apareció hace dos años, pero ha incrementado su tamaño de forma rápida en los últimos tres meses. Mediante la exploración física se observó la tumoración en la cara plantar e interna del pie derecho, de consistencia dura, fija, mayor a 8 cm, de bordes irregulares y pobremente definidos con aumento de la temperatura local. Se realizaron exámenes complementarios imagenológicos y hematológicos. Al analizar el resultado de la exploración física y los complementarios se decidió la intervención quirúrgica consistente en la resección de la tumoración. Conclusiones: El hemangioma cavernoso es una enfermedad que afecta por lo general a niños y adolescentes sin predilección por el sexo, sus síntomas y signos más encontrados son el aumento de volumen y el dolor. El tratamiento consiste en la resección del tumor a través de un margen de seguridad y su principal complicación es la recidiva.
ABSTRACT Introduction: Soft tissue tumors are a heterogeneous group of both benign and malignant lesions. The histological origin is diverse and among them is the vascular one such as hemangioma. Objective: To present a patient with a soft tissue cavernous hemangioma of the right foot. Case report: A 21-year-old white male, without morbid antecedents, attended at the Orthopedics and Traumatology outpatient clinic for presenting a ball at the level of the sole of the right foot accompanied by pain. It appeared two years ago, but has grown rapidly in size in the last three months. The physical examination revealed that the tumor was on the plantar and inner side of the right foot, it was of a hard, fixed consistency, greater than eight centimeters, with irregular and poorly defined edges, with an increase in local temperature. Complementary imaging and hematological examinations were performed. Upon analyzing the results of the physical examination and the complementary ones, a surgical intervention consisting of resection of the tumor was decided. Conclusions: Cavernous hemangioma is an entity that generally affects children and adolescents without predilection for sex, its most common symptoms and signs are increased volume and pain. Treatment consists of resection of the tumor through a safety margin and its main complication is recurrence.
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Pleomorphic hyalinizing angiectatic tumor (PHAT) of soft tissues is a rare, non-metastatic tumor of unknown etiology and uncertain behavior, which may recur locally. There are few reports on this condition, and due to the rarity of the disease, its lineage has not yet been fully elucidated. The present study aims to report the case of an unusual entity observed for the first time in vulval topography. A female patient, 83 years old, presented with a tumor in the vulvar region that had evolved for approximately 4 months. Magnetic resonance imaging showed an expansive perineal formation of 8.5 × 3.5 cm, and a hemivulvectomy with a flap rotation was performed. The review of the slides revealed a mesenchymal lesion without significant atypia, which was richly vascularized. In the areas of interest, the immunohistochemical (IHC) study demonstrated positivity for CD34, estrogen, and progesterone receptors; it was negative for the other tested markers. Morphological findings associated with the IHC staining panel supported the diagnosis of PHAT. The main morphological features of PHAT are clusters of ectatic vessels of different sizes that show deposits of subendothelial and intraluminal fibrin. Fusiform and pleomorphic cells randomly arranged in leaves or long fascicles intermingle these vessels. It is essential to recognize this entity and consider it among the differential diagnoses of a mesenchymal lesion, given the wide variety of entities that comprise this group of lesions.
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Humanos , Femenino , Anciano de 80 o más Años , Neoplasias de los Tejidos Blandos/patología , Neoplasias de la Vulva/patología , Diagnóstico DiferencialRESUMEN
Resumen ANTECEDENTES: Los liposarcomas son un tipo de tumor de partes blandas. El subtipo desdiferenciado es una de las variantes más comunes junto con el liposarcoma bien diferenciado. CASO CLÍNICO: Paciente de 68 años que acudió a consulta por aparición de una masa en la zona vaginal que clínicamente se diagnosticó como hernia inguinal directa. Se procedió a la resección quirúrgica de la masa. El reporte histopatológico fue de miofibrolipoma, sin atipias y con bordes libres de neoplasia. Tres años después, la paciente retornó a la consulta por reaparición de la masa y se negó a una nueva biopsia. Posteriormente, en el 2020, la paciente aceptó la resección de la masa; el reporte histopatológico fue: liposarcoma desdiferenciado con diferenciación lipoblástica homóloga a liposarcoma pleomórfico. CONCLUSIÓN: Los estudios histopatológicos son necesarios para la confirmación del diagnóstico y la resección quirúrgica es el tratamiento de elección.
Abstract BACKGROUND: Liposarcomas are a type of soft tissue tumor. The dedifferentiated subtype is one of the most common variants along with well-differentiated liposarcoma. CLINICAL CASE: A 68-year-old female patient presented for consultation due to the appearance of a mass in the vaginal area which was clinically diagnosed as a direct inguinal hernia. Surgical resection of the mass was performed. The histopathological report was myofibrolipoma, without atypia and with borders free of neoplasia. Three years later, the patient returned to the office for recurrence of the mass and refused a new biopsy. Subsequently, in 2020, the patient accepted the resection of the mass; the histopathologic report was: dedifferentiated liposarcoma with lipoblastic differentiation homologous to pleomorphic liposarcoma. CONCLUSION: Histopathological studies are necessary for confirmation of the diagnosis and surgical resection is the treatment of choice.