Linfangioma Quístico del Páncreas. Un Tumor poco Frecuente

El linfangioma quístico del páncreas (LQP), es un tumor extremadamente raro y representa solo el 1% de los linfangiomas abdominales. El objetivo de este manuscrito fue reportar un caso de LQP intervenido quirúrgicamente; y revisar la evidencia existente respecto de sus características morfológicas, terapéuticas y pronósticas. Mujer de 67 años, con LQP operada en Clínica RedSalud Mayor Temuco en septiembre de 2023. Se verificó un tumor sólido-quístico de 16 cm de diámetro mayor, adherido al páncreas a nivel del cuerpo de la glándula, de 867 gramos de peso, con líquido amarillento en su interior; la que fue extirpada completamente. Después del estudio histológico, se realizaron tinciones inmunohistoquímicas complementarias para CD31, D2-40 y calretina. La paciente tuvo un curso postoperatorio sin incidentes, siendo dado de alta al tercer día postoperatorio. En el control alejado, se encontraba en buenas condiciones generales. El LQP es un tumor muy poco frecuente. Las características clínicas e imágenes de este tipo de lesiones son inespecíficas. Debe considerarse en el diagnóstico diferencial de las lesiones quísticas pancreáticas. La resección quirúrgica completa con márgenes libres es el tratamiento de elección; y el pronóstico del LQP es favorable si se reseca por completo.

SUMMARY: Pancreas cystic lymphangioma (PCL) are extremely rare, accounting for only 1% of abdominal lymphangiomas. The aim of this study was to report a rare case of PCL, who underwent surgery; and review the existing evidence regarding its morphological, therapeutic and prognostic characteristics. 67-year-woman patient with PCL who underwent surgery at Clínica RedSalud Mayor Temuco in September 2023. In this case, a solid-cystic tumor with a major diameter of 16 cm was identified, adhering to the pancreas at the level of the body of the gland, weighing 867 grams and containing yellowish fluid in its interior. The tumor was completely excised. Subsequent to histological examination, additional immunohistochemical staining was performed for CD31, D2-40, and calretinin. The patient experienced an uneventful postoperative course and was discharged on the third postoperative day. During the follow-up, the patient remains in good general condition. LQP is a very rare tumor. Clinical features and images of this type of lesions are nonspecific. It should be considered in the differential diagnosis of pancreatic cystic lesions. Complete surgical resection with free margins is the treatment of choice; and the prognosis of LQP is favorable if it is completely resected.

Autopsy findings of fatal retroperitoneal hemorrhage after traumatic rupture of bilateral renal angiomyolipoma

ABSTRACT The present work reports the autopsy findings of a unique case characterized by fatal retroperitoneal hemorrhage following the traumatic rupture of bilateral renal angiomyolipomas. Renal angiomyolipomas are generally benign tumors with an unpredictable clinical course, ranging from asymptomatic to sudden rupture and hemorrhagic shock. They may be associated with genetic disorders such as tuberous sclerosis complex. The case under investigation is unprecedented in the medical literature due to its bilateral nature and fatal outcome. Autopsy analysis revealed an extensive retroperitoneal hemorrhage originating from bilateral ruptured tumors. Microscopic examination found features consistent with bilateral renal angiomyolipoma. Circumstantial information identified a traffic accident before the death, considering it as the cause of the tumors' traumatic rupture. In this case, due to the severity of the situation, immediate medical measures—such as fluid resuscitation, coagulopathy correction, and surgical treatment, which are usually lifesaving—could not be performed. This led to the patient being declared dead at the scene of the crash.

Tumor glómico de intestino delgado / Glomus tumor of the small bowel

RESUMEN Los tumores glómicos (TG) son neoplasias vasculares benignas de tejidos blandos en zonas acrales periféricas. La mayoría de los TG intraabdominales se producen en el estómago; su presentación intestinal es de muy baja incidencia. Se presenta el caso de una mujer de 26 años, que consultó por dolor abdominal crónico de baja intensidad en región umbilical sin otra signo sintomatología. Se completó su estudio imagenológico y se detectó una lesión abdominopélvica heterogénea con componente sólido vascularizado, y líquido con proyecciones papilares. El informe de la patología de la pieza quirúrgica arrojó el diagnóstico de TG de intestino delgado. Se realizó una consulta que demuestra su baja incidencia: afecta a personas entre 26 y 88 años de ambos sexos en igual proporción, sin una distribución geográfica predominante. Los TG deben considerarse como un raro diagnóstico diferencial ante tumores del intestino delgado (ID).

ABSTRACT Glomus tumors (GTs) are benign vascular neoplasms of soft tissues that occur in peripheral acral areas. Most intra-abdominal GTs develop in the stomach; the incidence of intestinal presentation is very low, We report the case of a 26-year-old female patient with chronic mild pain in the umbilical region with no other symptoms or signs. The imaging tests demonstrated a heterogeneous abdominopelvic mass with a solid vascularized component, and a cystic component with papillary projections. The pathology examination of the surgical specimen reported the diagnosis of GT of the small bowel (SB). We conducted a review of the literature and found their low incidence, affecting both men and women between 26 and 88 years without a predominant geographic distribution. Glomus tumors should be considered as a rare differential diagnosis in the presence of small SB tumors.

Desbridamiento retroperitoneal video asistido: una nueva técnica quirúrgica para una vieja patología, la pancreatitis aguda severa presentación de caso clínico / Video-assisted retroperitoneal debridement: a new surgical technique for an old pathology, severe acute pancreatitis clinical case presentation

INTRODUCCIÓN: el desbridamiento retroperitoneal video asistido (DRVA) es una técnica mínimamente invasiva usada para el tratamiento de la necrosis pancreática infectada (NPI). MATERIAL Y MÉTODO: reporte de caso. RESULTADOS: se presenta un caso de pancreatitis aguda severa tratada con DRVA en una paciente femenina de 43 años, con un cuadro clínico de 5 días de evolución caracterizado por dolor abdominal espasmódico en hipocondrio derecho, de moderada intensidad, irradiado a epigastrio y en cinturón a ambos flancos. La paciente recibió atención privada en dos centros previos al ingreso al nuestro. Al ingreso, en el laboratorio, presenta leucocitosis y desvió izquierdo, amilasémia y lipasémia altas. Se realizaron tomografías contrastadas y punciones guiadas por TAC y DRVA cuando se evidencia necrosis amurallada. Se describe la técnica quirúrgica. Súbitamente la paciente presenta insuficiencia respiratoria y datos compatibles con tromboembolia pulmonar y fallece. CONCLUSIÓN: bajo la visión de terapia escalonada, el desbridamiento retroperitoneal video asistido va ganando adeptos en el manejo de la Pancreatitis Aguda Severa

BACKGROUND: video-assisted retroperitoneal debridement (VARD) is a minimally invasive technique used for the treatment of infected necrotizing pancreatitis. MATERIAL AND METHODS: case report. RESULTS: a case of severe necrotizing pancreatitis is presented in a 43 years old female patient, with 5 days clinical evolution with spasmodic abdominal pain in epigastrium and right hypochondrium of moderate intensity, irradiated to both flanks in belt. The patient received private care in two centers upon the admission in our hospital. In the laboratory at the admission, she showed leukocytosis and left deviation, high level in amylase and lipase. Contrasted enhanced tomography and guided punctures were realized and VARD were considered when evidence of wall of necrosis was observed in scanner. The surgical technique is described. Suddenly the patient presented acute respiratory failure with massive pulmonary thromboembolism and died. CONCLUSION: under the step-up approach vision, the video-assisted retroperitoneal debridement is gaining popularity in the management of the acute necrotizing pancreatitis

Dificultad diagnóstica en masa retroperitoneal. Reporte de un caso / Diagnostic difficulty in retroperitoneal mass: A case report

El Schwannoma se origina de la vaina perineural de Schwannoma, se detecta con frecuencia incidentalmente en estudios imagenológicos siendo el principal método diagnóstico la Tomografía Computada. El tratamiento es la resección quirúrgica con márgenes libres. Se presenta una paciente femenina de 49 años, en control por oncología por enfermedad de base, cáncer de mama izquierda, se identifica por TAC y PECT/TC imagen voluminosa en retroperitoneo situación lateroaórtica izquierda de configuración no quística e hipermetabólica, solicita biopsia percutánea, ante la falta de ventana, se decide exeresis completa de masa. Diagnóstico definitivo patológico Schwannoma. Sin indicación de tratamiento adyuvante, cursa buena evolución postoperatoria sin recidiva.

Schwannoma, a benign tumor that arises from Schwann cells of the perineural nerve sheath, is often incidentally detected in imaging tests and mainly diagnosed by CT scan. Treatment consists of surgical resection with clear margins. We present the case of a 49-year-old female patient subject to Oncology Department follow-up due to an underlying disease, left breast cancer. A large, hypermetabolic, noncystic mass in the retroperitoneal region is identified by CT and PECT/CT scan in the left lateral aortic area. A percutaneous biopsy is requested. Due to the limited acoustic window, complete resection of the mass is decided. Final histopathology diagnosis of Schwannoma. No adjuvant treatment indication; undergoing favorable postoperative progress, without recurrence

Schwannoma retroperitoneal primario. Presentación de un caso

Los schwannoma son tumores de tejidos blandos que se originan en las células de Schwann de la vaina nerviosa en los nervios periféricos, craneales o viscerales, en cualquier parte del cuerpo. Se trata de una entidad extremadamente inusual. En el artículo se describe el caso de un paciente de piel negra, 47 años de edad y con antecedentes de salud, quien acudió a consulta de clasificación, refiriendo que desde hacía un mes había comenzado a presentar dificultad para orinar, hasta llegar a la retención aguda de orina. Al examen físico se constató, mediante tacto rectal, esfínter tónico, ampolla rectal vacía, próstata aumentada de tamaño grado IV con consistencia fibromuscular de superficie lisa y móvil; no dolorosa. Tras realizarle estudios imagenológicos y complementarios, recibió tratamiento quirúrgico en el Hospital Provincial Docente Oncológico María Curie, de Camagüey, Cuba. Se le diagnosticó un schwannoma retroperitoneal, confirmado por el informe de Anatomía Patológica. Actualmente la evolución del paciente es favorable, sin tratamiento médico, pero con seguimiento periódico.

Schwannoma are soft tissue tumors that originate in Schwann cells of the nerve sheath in peripheral, cranial or visceral nerves, anywhere in the body. This is an extremely unusual entity. The article describes the case of a 47-years-old black-skinned patient with a history of health who attended a triage consultation, reporting that one month ago he had started having difficulty urinating, leading to acute urinary retention. The physical examination confirmed, through digital rectal examination, a tonic sphincter, an empty rectal ampulla, a grade IV enlarged prostate with a fibromuscular consistency with a smooth and mobile surface; not painful. After carrying out imaging and complementary studies, he received surgical treatment at the María Curie Provincial Oncological Teaching Hospital, in Camagüey, Cuba. He was diagnosed with a retroperitoneal schwannoma, confirmed by the Pathology report. Currently the evolution of the patient is positive, without medical treatment, but with periodic follow-up.

Paraganglioma lateroaórtico / Latero-aortic paraganglioma

RESUMEN El feocromocitoma es un tumor productor de catecolaminas que procede de las células cromafines del sistema nervioso simpático. El 80-85% se localiza en la médula suprarrenal y el 15-20% son de localización extra adrenal y se denominan paragangliomas (PG). Alrededor del 97 % son benignos y se curan mediante la extirpación quirúrgica, y el restante 3% son malignos, capaces de producir metástasis a distancia. Se presenta el caso de una mujer de 43 años, que consultó por hipertensión, cefalea y palpitaciones. Presentaba elevación de catecolaminas urinarias, y por resonancia magnética se diagnosticó una masa de 50 por 41 mm latero aórtica. Le fue efectuada su resección por vía laparoscópica, sin complicaciones, con desaparición de los síntomas.

ABSTRACT Pheochromocytomas are catecholamine-producing tumors arising from the chromaffin cells of the sympathetic nervous system. Between 80-85% occur in the adrenal medulla and 15-20% are extraadrenal and are called paragangliomas (PG). About 97% are benign and are solved by surgical resection, while the remaining 3% are malignant and may produce distant metastases. We report the case of 43-year-old female patient who consulted due to hypertension, headache and palpitations. She had elevated urine catecholamines and presented a 50 x 41 mm latero-aortic mass on magnetic resonance imaging. The patient underwent laparoscopic resection of the tumor without complications and experienced relief of symptoms.

Biopsia ganglionar retroperitoneal por laparoscopia

Introducción: La biopsia ganglionar retroperitoneal es un procedimiento frecuentemente requerido en el estudio de neoplasias; resulta deseable optimizar su rendimiento con baja morbilidad. Este artículo describe la utilidad y complicaciones de biopsias ganglionares retroperitoneales por laparoscopia en una institución oncológica de Latinoamérica. Material y Métodos: Cohorte retrospectiva de pacientes con biopsia ganglionar retroperitoneal o mesentérica laparoscópica entre 2011 y 2021 en el Instituto Nacional de Cancerología, en Bogotá, Colombia. Se recogieron datos demográficos, quirúrgicos, complicaciones y mortalidad a 30 días, resultados histopatológicos y su rol en la clínica. Resultados: Se incluyeron 41 pacientes; 73% con diagnóstico de malignidad, principalmente linfoma. La indicación fue mayormente sospecha de recaída, seguida por sospecha de enfermedad hematológica de novo. Siempre se obtuvo tejido adecuado y suficiente para diagnóstico histológico. Requirieron conversión a laparotomía cinco pacientes (12%). No hubo complicaciones Clavien-Dindo III /IV ni mortalidad a 30 días. Se presentó morbilidad grado I o II en 3 casos (7%) y un incidente intraoperatorio grado III. Conclusión: La naturaleza invasiva y el carácter diagnóstico de la biopsia retroperitoneal laparoscópica, constituyen un desafío frecuente en la práctica del cirujano general. La planeación estratégica e individualizada y la técnica quirúrgica depurada son las claves para lograr el máximo rendimiento, con baja morbimortalidad.

Introduction: Retroperitoneal lymph node biopsy is a frequently required procedure in the study of neoplasms; it is desirable to optimize its performance with low morbidity. This paper describes the usefulness and complications of retroperitoneal lymph node biopsies by laparoscopy in a cancer institution in Latin America. Material and Methods: Retrospective cohort of patients with laparoscopic retroperitoneal or mesenteric lymph node biopsy between 2011 and 2021 at the National Cancer Institute, in Bogotá, Colombia. Demographic and surgical data, complications and 30-day mortality, histopathological results and their clinical role were collected. Results: 41 patients were included; 73% diagnosed with malignancy, mainly lymphoma. The indication was mostly suspected relapse, followed by suspected de novo hematologic disease. Adequate and sufficient tissue was always obtained for histological diagnosis. Five patients (12%) required conversion to laparotomy. There were no Clavien-Dindo III/IV complications or 30-day mortality. Grade I or II morbidity occurred in 3 cases (7%) and a grade III intraoperative incident. Conclusion: The invasive nature and diagnostic character of laparoscopic retroperitoneal biopsy constitute a frequent challenge in the practice of the general surgeon. Strategic and individualized planning and a refined surgical technique are the keys to achieving maximum performance, with low morbidity and mortality.

Síndrome colestásico como forma de presentación de linfoma no Hodgkin. Reporte de un caso pediátrico / Cholestatic syndrome as a presentation of non-Hodgkin lymphoma. A pediatric case report

La ictericia colestásica se debe a la alteración de la secreción de bilirrubina conjugada; es una de las posibles causas la alteración del flujo biliar por obstrucción de la vía biliar extrahepática. El linfoma es la tercera neoplasia más frecuente en pediatría, mientras que los tumores pancreáticos son poco frecuentes y, en su mayoría, lesiones benignas. Las manifestaciones clínicas de los tumores de localización retroperitoneal son poco específicas y suelen ser tardías, por lo que la sospecha clínica debe ser alta. El objetivo del siguiente trabajo es presentar el caso de un niño de 7 años con síndrome colestásico en el que se halló un tumor en la cabeza del páncreas que comprimía la vía biliar extrahepática. El diagnóstico del tumor fue linfoma no Hodgkin (LNH). Se destaca la infrecuencia de este tumor en esta localización en la edad pediátrica

Cholestatic jaundice is due to an alteration in conjugated bilirubin secretion; a possible cause is an altered bile flow resulting from an obstruction of the extrahepatic bile duct. A lymphoma is the third most common neoplasm in pediatrics, while pancreatic tumors are rare and mostly benign. The clinical manifestations of retroperitoneal tumors are not very specific and are usually late, so a high level of clinical suspicion is required. The objective of this study is to describe the case of a 7-year-old boy with cholestatic syndrome with a tumor in the head of the pancreas compressing the extrahepatic bile duct. The tumor diagnosis was non-Hodgkin lymphoma (NHL). It is worth noting that the presence of a tumor in this location in pediatric age is uncommon

A retroperitoneal myopericytoma: The first case located at the retroperitoneal area and not originate from the kidneys

A 25-year-old woman had a mass of approximately 65 cm × 33 cm × 102 cm, located in the left paraaortic area on CT scan. It was diagnosed as retroperitoneal malignant neoplasm on imaging. Afterward, open retroperitoneal tumor excision was performed. At laparotomy, the mass was carefully dissected from the ureter, renal artery, and aorta and excised as en-bloc. The pathological result was “myopericytoma.” Histologically, the pathological findings characterized a pericytic neoplasm characterized by a perivascular growth of myoid tumor cells. In addition, there were uniform, oval-shaped cells with eosinophilic cytoplasm arranged in short fascicles around blood vessels. The cytologic atypia and mitoses were absent. There are many different tumors in the retroperitoneal area. Most of these lesions are malign nature. Nevertheless, for each benign and malign neoplasm, the preoperative imaging method is generally similar. This present case showed the significant findings of myopericytoma, a benign pathology located in the retroperitoneal area.

Importancia del conocimiento anatómico del espacio extraperitoneal y su utilidad en los abordajes quirúrgicos / Importance of anatomical knowledge of the extraperitoneal space and its usefulness in surgical approaches

Introducción. El espacio extraperitoneal, se define como el segmento topográfico ubicado entre el peritoneo parietal internamente y la fascia transversalis externamente. Como resultado del desarrollo y consolidación de la cirugía laparoscópica, en particular de la herniorrafia inguinal por esta vía, se ha presentado un renovado y creciente interés en esta área anatómica, debido a la importancia de su conocimiento detallado en la cirugía de mínima invasión. Métodos. Se hizo una revisión narrativa de la literatura para presentar una información actualizada y detallada sobre la anatomía del espacio extraperitoneal y su importancia en diferentes procedimientos quirúrgicos realizados actualmente. Resultados. Por fuera del espacio peritoneal, se encuentran las áreas anatómicas externas al peritoneo parietal, que incluyen la preperitoneal y la retroperitoneal. Mediante la laparoscopia, se pueden localizar en estos espacios cinco triángulos anatómicos, además de la corona mortis y el triángulo supra vesical. Conclusión. El conocimiento del espacio extraperitoneal es de gran importancia para el cirujano general, teniendo en cuenta los múltiples procedimientos que requieren el abordaje de esta área topográfica

Introduction. The extraperitoneal space is defined as the topographic segment located between the parietal peritoneum internally and the fascia transversalis externally. As a result of the development and consolidation of laparoscopic surgery, particularly inguinal herniorrhaphy by this route, there has been a renewed and growing interest in this anatomical area, due to the importance of its detailed knowledge in minimally invasive surgery. Methods. A narrative review of the literature was made to present updated and detailed information on the anatomy of the extraperitoneal space and its importance in different surgical procedures currently performed. Results. Outside the peritoneal space are the anatomical areas external to the parietal peritoneum, including the preperitoneal and extraperitoneal. Using laparoscopy, five anatomical triangles, in addition to the corona mortis and the supravesical triangle, can be located in these spaces. Conclusion. Knowledge of the extraperitoneal space is of great importance for the general surgeon, taking into account the multiple procedures that require the approach of this topographic area

Embarazo ectópico retroperitoneal primario

El embarazo ectópico representa 1,5% a 2% de todos los embarazos y es causa común de mortalidad relacionada con el embarazo durante el primer trimestre. La ubicación más común es la trompa de Falopio y menos del 2% son embarazos abdominales. El embarazo ectópico retroperitoneal es un tipo extremadamente raro con una patogénesis bastante compleja. Esta ubicación inusual tiene un alto riesgo de complicaciones potencialmente mortales. El diagnóstico temprano es difícil por la incapacidad de diferenciar signos, síntomas, concentraciones de gonadotropina coriónica e imágenes con embarazos ectópicos de las ubicaciones inusuales, como el retroperitoneo. Además, es necesario tener cuidado con el diagnostico de estos casos cuando los sitios más comunes de aparición no presentan alteraciones. El tratamiento consiste en la extracción de tejido trofoblástico por laparotomía o laparoscopia. Se presenta un caso de embarazo ectópico retroperitoneal primario.

Ectopic pregnancy accounts for 1.5%-2% of all pregnancies and is a common cause of pregnancy-related mortality during the first trimester. The most common location is the fallopian tube and less than 2% are abdominal pregnancies. Retroperitoneal ectopic pregnancy is an extremely rare type with a rather complex pathogenesis. This unusual location has a high risk of life-threatening complications. Early diagnosis is difficult because of the inability to differentiate signs, symptoms, chorionic gonadotropin concentrations, and imaging with ectopic pregnancies from unusual locations, such as the retroperitoneum. In addition, it is necessary to be careful with the diagnosis of these cases when the most common sites of appearance do not present alterations. Treatment consists of removal of trophoblastic tissue by laparotomy or laparoscopy. A case of primary retroperitoneal ectopic pregnancy is presented.

Liposarcoma retroperitoneal gigante bien diferenciado, un reporte de caso

Los liposarcomas son neoplasias malignas raras que se originan en el tejido adiposo, con mayor frecuencia en el retroperitoneo. De todas las variantes histológicas, el diferenciado es el más común y el de mejor pronóstico. El diagnóstico se establece con pruebas imagenológicas con o sin ayuda de biopsia. El tratamiento consiste en la resección completa del tumor, que puede o no acompañarse de terapia adyuvante. Se presenta el caso de un paciente de 41 años con distensión abdominal y pérdida de peso, en el que se confirma un liposarcoma retroperitoneal mediante una TC abdominal, por lo que fue sometido a una resección quirúrgica completa que resultó exitosa. El paciente se recuperó satisfactoriamente y se mantuvo sin recidivas durante el seguimiento. Se concluye que el diagnóstico y terapéutico varían de acuerdo con las características del tumor y su riesgo de recidiva; por lo que hasta la actualidad continúa siendo un desafío multidisciplinario.

SUMMARY Liposarcomas are rare malignant neoplasms that originate in adipose tissue, most frequently in the retroperitoneum. Of all histological variants, differentiated liposarcoma is the most common and has the best prognosis. Diagnosis is established by imaging tests with or without the aid of biopsy. Treatment consists of complete resection of the tumour, which may or may not be accompanied by adjuvant therapy. We present the case of a 41-year-old patient with abdominal distension and weight loss, who was confirmed to have retroperitoneal liposarcoma by abdominal CT scan and underwent successful complete surgical resection. The patient recovered satisfactorily and remained free of recurrence during follow-up. It is concluded that diagnosis and therapy vary according to the characteristics of the tumour and its risk of recurrence, which is why it remains a multidisciplinary challenge to this day.

Retroperitoneal cystic lymphangioma in a cirrhotic patient: A case report and review of the literature

Retroperitoneal cystic lymphangiomas (RCL) are rare benign tumors of the lymphatic system. They account for less than 1% of all lymphangiomas. Surgical resection is the recommended treatment option; however, obtaining a pre-operative diagnosis is often difficult and, in most cases, the final diagnosis is only possible following histological assessment of the surgical specimen. This report describes a case of RCL in a 58-year-old female cirrhotic patient who presented to our center with dull aching abdominal pain and distension. To our knowledge, this is the first case of a RCL in a cirrhotic patient reported in the literature.

Los linfangiomas quísticos retroperitoneales (LQR) son tumores benignos raros del sistema linfático y representan menos del 1% de todos los linfangiomas. La resección quirúrgica es la opción de tratamiento recomendada; sin embargo, obtener un diagnóstico preoperatorio suele ser difícil y, en la mayoría de los casos, el diagnóstico final solo es posible tras la evaluación histológica de la pieza operatoria. En este estudio, describimos un caso de un LQR en una paciente cirrótica de 58 años que se presentó en nuestro centro con dolor abdominal sordo y distensión. Hasta donde sabemos, este es el primer caso de LQR en un paciente cirrótico reportado en la literatura.

Renal Ganglioneuroma.

Background: Renal ganglioneuroma is an extremely rare benign tumour that affects neural crest cells. Here we report a case of renal ganglioneuroma with nodal metastasis managed by surgical resection. Case report: A 38-year-old female presented with anorexia and early satiety. On examination, she had a palpable mass per abdomen. CT scan revealed a large heterogenous mass in retroperitoneum in right suprarenal region with enlarged retrocrural lymph nodes. She underwent right radical nephrectomy as the mass was inseparable from the right kidney. Postoperative period was uneventful. HPE revealed renal ganglioneuroma. Conclusion: Primary renal ganglioneuroma is difficrult to differentiate from other etroperitoneal lesions. Surgical resection is the most effective treatment.

Application of laparoscopic ultrasound in retroperitoneal radical nephrectomy for renal cell carcinoma with Type II inferior vena cava tumor thrombectomy

Background: The aim of this study was to investigate the application value of laparoscopic ultrasound (LU) in retroperitoneal radical nephrectomy for renal cell carcinoma with Type II inferior vena cava tumor thrombectomy (RRN-RCC-TII-IVCTT). Methods: The clinical data (operative time, length of tumor thrombus, tumor length, intraoperative bleeding, clinical stage, histological type, residual tumor tissue, and postoperative follow-up) of 6 patients who underwent LU-guided RRN-RCC-TII-IVCTT were retrospectively analyzed, and the intraoperative experience of LU was also summarized. Results: All 6 patients recovered well with liver and kidney functions returning to normal, and no tumor recurrence, metastasis, or vena cava tumor thrombus. Conclusions: LU-guided RRN-RCC-TII-IVCTT is a feasible treatment option, which locates the tumor accurately by retroperitoneal approach and provides the additional benefit of reduced intraoperative bleeding and shortened operative time, also achieving the much sought-after goal of precision.

Mielolipoma gigante unilateral de la glándula suprarrenal. Reporte de caso

Introducción: Los tumores de la glándula suprarrenal son inusuales y por lo general son hallados de forma incidental por estudios de imágenes. Dentro de este grupo los mielolipomas son uno de los tumores más raros, considerados el 2% de los tumores suprarrenales. Caso Clínico: Presentamos una paciente femenina de 60 años de edad con antecedentes de dolor a tipo cólico de forma esporádica a nivel del hipocondrio derecho. La ecografía abdominal detectó colelitiasis y una masa sugerente de adenoma suprarrenal izquierdo. La tomografía abdominal corroboró el tumor suprarrenal gigante y la litiasis vesicular. Se realizó suprarrenalectomía y colecistectomía convencional sin complicaciones. El diagnóstico histopatológico mostró un mielolipoma suprarrenal y una colecistitis crónica. Discusión: El mielolipoma suprarrenal es infrecuente, la etiología se desconoce, por lo general es asintomático y su hallazgo es incidental, habitualmente son unilaterales, menores a 4cm y la incidencia aumenta con la edad. Conclusiones: Cuando los mielolipomas alcanzan dimensiones mayores de 10cm se recomienda realizar una suprarrenalectomía convencional.

Introduction: Adrenal gland tumors are unusual and are usually found incidentally by imaging studies. Within this group, myelolipomas are one of the rarest tumors, considered 2% of adrenal tumors. Clinical case: We present a 60-year-old female patient with a history of sporadically colicky pain at the level of the right hypochondrium. Abdominal ultrasound revealed cholelithiasis and a mass suggestive of a left adrenal adenoma. Abdominal tomography confirmed a giant adrenal tumor and gallstones. An adrenalectomy and conventional cholecystectomy were performed without complications. The histopathological diagnosis showed an adrenal myelolipoma and chronic cholecystitis. Discussion: Adrenal myelolipoma is infrequent, the etiology is unknown, it is usually asymptomatic and its finding is incidental, they are usually unilateral, smaller than 4cm and the incidence increases with age. Conclusions: When myelolipomas reach dimensions greater than 10cm, conventional adrenalectomy is recommended. In selected cases.

Early outcomes of robotic retroperitoneal partial nephrectomy: evaluating surgical success with margin, ischemia, and complication score

SUMMARY OBJECTIVE: The objective of this study was to evaluate the minimum number of required cases for successful robotic retroperitoneal partial nephrectomy for an experienced surgeon in transperitoneal robotic surgery. METHODS: Our prospectively collected clinic database was evaluated retrospectively, and 50 patients who underwent robotic retroperitoneal partial nephrectomy by a single experienced surgeon from January 2019 to February 2023 were included in this study. Demographic and perioperative data and R.E.N.A.L. nephrometry scores were noted. margin, ischemia, and complication score was used to predict surgical success. Receiver operating characteristic curve analysis was used to determine how many cases were required to achieve margin, ischemia, and complication score positivity and to apply the off-clamp technique. Also, the first 25 patients were assigned to Group 1 and the second 25 patients to Group 2, and the data were compared between the groups. RESULTS: The patients' demographic data and tumor characteristics were similar in the groups. The off-clamp technique and sutureless technique rates in Group 2 were significantly higher than that in Group 1. Margin, ischemia, and complication score positivity was observed in 60% (n=15) of Group 1 and 96% (n=24) of Group 2. At receiver operating characteristic curve analysis, the 25th and later cases were statistically significant in terms of margin, ischemia, and complication score positivity. In terms of performing surgery with the off-clamp technique, the 28th and subsequent cases were statistically significant. CONCLUSION: A total of 25 or more cases appear to be sufficient to provide optimal surgical results in robotic retroperitoneal partial nephrectomy for an experienced surgeon.

Ressecção cirúrgica de leiomiossarcoma de veia cava inferior retro-hepática sem reconstrução vascular: relato de caso / Surgical resection of retrohepatic inferior vena cava leiomyosarcoma without vascular reconstruction: case report

Resumo O leiomiossarcoma de veia cava inferior (LVCI) é um raro tumor maligno mesenquimal. Seu tratamento cirúrgico é um desafio, pois necessita combinar margens cirúrgicas livres com reconstrução vascular, usando prótese ou enxerto autólogo, sutura primária ou ligadura simples sem reconstrução da veia. A ligadura é possível graças ao lento crescimento do tumor, permitindo o desenvolvimento de circulação venosa colateral. Apresentamos um caso de LVCI tratado por ressecção radical sem reconstrução vascular. Paciente feminina, 48 anos, com dor abdominal em hipocôndrio direito, astenia e sintomas dispépticos pós-prandiais. Tomografia de abdome revelou massa de formação expansiva localizada no segmento infra-hepático da veia cava inferior com redução da luz do vaso. Na cirurgia, o clampeamento da veia não indicou repercussões hemodinâmicas, sugerindo formação de circulação colateral suficiente. Decidiu-se pela ressecção radical em toda a porção da veia cava retro-hepática e ligadura da veia cava sem reconstrução vascular. A paciente evoluiu sem intercorrências.

Abstract Inferior vena cava leiomyosarcoma (IVCL) is a rare malignant mesenchymal tumor. Surgical treatment is a challenge because it must combine free surgical margins with vascular reconstruction, using prosthetic or autologous grafts, primary suture, or simple ligation without vein reconstruction. The ligation option is possible thanks to the slow growth of the tumor, allowing collateral venous circulation to develop. We present a case of an IVCL treated with radical resection without vascular reconstruction. The patient was a 48-year-old female with abdominal pain in the right upper quadrant, asthenia, and postprandial dyspeptic symptoms. Abdominal tomography revealed a mass with an expansive formation located in the infrahepatic segment of the inferior vena cava and reduced vessel lumen. During surgery, vein clamping did not provoke hemodynamic repercussions, suggesting sufficient collateral circulation formation. It was decided to perform a radical resection of the entire portion of the retrohepatic vena cava and ligate the vena cava without vascular reconstruction. The patient recovered without complications.

A preliminary experience of retroperitoneal approach by partial resection of the tenth rib for repairing Crawford type Ⅳ thoracoabdominal aortic aneurysm and complex abdominal aortic aneurysm / 中华普通外科杂志

Objective:To evaluate a surgical approach for partial resection of the tenth rib through a retroperitoneal approach for the exposure of Crawford type IV thoracoabdominal aortic aneurysm and complex abdominal aortic aneurysm from 2014 to 2019.Methods:A retrospective analysis was conducted on clinical data and follow-up results of 7 patients who underwent treatment for Crawford type IV thoracoabdominal aortic aneurysm and complex abdominal aortic aneurysm through partial resection of the tenth rib via a retroperitoneal approach.Results:One case (14.3%) had associated Marfan syndrome, and 5 cases (71.4%) underwent left renal artery reconstruction. None of the patients experienced severe complications such as cardiopulmonary complications or renal failure postoperatively, and there was no statistically significant difference in serum creatinine levels between preoperative and postoperative stages during hospitalization ( P=0.205). Follow-up examinations showed no long-term vascular stenosis. Conclusions:Partial resection of the tenth rib through a retroperitoneal approach can avoid incisions of the pleura and diaphragm. It allows for the exposure of the aorta below the diaphragm and has the ability to treat aortic diseases below the diaphragm with smaller incisions and lower complication risks.