Tumor fibromixoma lipoesclerosante óseo: Presentación de un caso y revisión de la literatura / Bone liposclerosing myxofibrous tumor: Case presentation and literature review

El tumor fibromixoma lipoesclerosante óseo (TFMLE) fue descrito inicialmente por Ragsdale en 1986, como una lesión fibroósea polimórfica de hueso con una mezcla de elementos histológicos incluyendo lipoma, fibroxantoma, mixoma, mixofibroma, necrosis grasa, osificación isquémica, áreas de displasia fibrosa y rara vez cartílago o cambios quísticos. La localización más frecuentemente descrita es en la región intertrocantérica del fémur. Es un hallazgo en pacientes asintomáticos o bien estar asociado a fractura. Radiológicamente es una lesión lítica, geográfica, de margen bien definido y habitualmente esclerótico, en algunos casos puede observarse mineralización en el interior de la lesión o un cierto grado de expansión en el contorno. Se ha descrito la estrecha relación del TFMLE con la displasia fibrosa por las características histológicas y la presencia de una mutación Gsα, otra hipótesis de la etiología de la lesión incluye la reacción de la displasia fibrosa a la fatiga por estrés.

The bone liposclerosing myxofibrous tumor (LSMFT) was initially described by Ragsdale in 1986 as a polymorphic fibroosseous bone lesion with a mix of histologic elements that include lipoma, fibroxanthoma, myxoma, myxofibroma, fat necrosis, ischemic ossification, areas of fibrous dysplasia, and infrequent presence of cartilage or cystic changes. The most frequently reported location is the intertrochanteric area of the femur. Radiologically it is a lytic, geographic lesion, with well-defined margins and usually sclerotic. In some cases findings include mineralization inside the lesion or a certain degree of expansion to the contour. The close relationship between LSMFT and fibrous dysplasia has been described based on the histologic characteristics and the presence of the Gsα mutation. Another hypothesis of the etiology of the lesion is the reaction of fibrous dysplasia to stress.

Linfoma primario de hueso con afectación multicéntrica / Primary bone lymphoma with multicentric involvement

El linfoma primario de hueso es una enfermedad infrecuente, que tiene una presentación y evolución diferente a los linfomas de otras localizaciones. Se presenta un caso de linfoma primario de hueso de localización craneana y esternal de rápido crecimiento. En su evolución, realizada la exéresis de la lesión primaria de calota, presentó aparición de nuevas lesiones de rápido crecimiento a nivel craneano y fémur y progresión de lesión preesternal que, con anatomía patológica de linfoma no Hodgkin difuso de células grandes B, inició R-CHOPP (ciclofosfamida, doxorrubicina, vincristina, prednisona y rituximab) con rápida disminución de todas las lesiones sin evidencia de progresión al cabo de los seis ciclos.

Primary bone lymphoma is a rare disease, which usually has a different presentation and evolution than lymphomas of other locations. We are presenting a case of primary bone lymphoma of rapid growth, in cranial and sternal locations. In its evolution, once the excision of the primary lesion of the skull was performed, the patient presented new lesions of rapid growth at the skull and femur level, and progression of pre-sternal lesion. With large B-cell diffuse non-Hodgkin lymphoma pathology, the patient initiated R-CHOPP (cyclophosphamide, doxorubicin, vincristine, prednisone and rituximab) with rapid reduction of all lesions without evidence of progression after the six cycles.

MR Imaging Findings of a Primary Cardiac Osteosarcoma and Its Bone Metastasis with Histopathologic Correlation

An osteosarcoma of cardiac origin is extremely rare, and a comprehensive description of MR imaging (MRI) findings of cardiac osteosarcoma and its metastasis in the femur have not been reported in the literature. We present a case of cardiac osteosarcoma in a 47-year-old woman and its metastasis to the femur, focusing on the description of MRI findings of the cardiac and metastatic bony osteosarcoma with a histopathologic correlation.

Allograft replacement in limb salvage surgery for bone tumors.

A retrospective study of a series of eleven patients with active, aggressive benign and malignant bone tumors who were treated by radical resection and massive match-sized allograft replacement was reviewed. There were seven giant cell tumors and four osteosarcoma cases involving mainly either the lower end of the femur or upper end of the tibia. The age of the patients ranged from 11 to 50 years. As the follow-up period was rather short, ranging from 9 to 60 months, the patients are all still alive. Complications included two infections, one local recurrence, and two with resorption of the articular surface of the osteoarticular graft. Though psychosocial benefit was gained in patients with this limb salvage procedure, functional evaluation did not yield a satisfactory result.

Maxillary metastasis of osteosarcoma.

Osteosarcoma, either primary or metastatic, rarely involves the jaws. Though only a few cases of mandibular metastasis of osteosarcoma have been reported, only one case of et al maxillary involvement (Singh, 1978) has been reported. A case of 21 year old boy with metastasis of osteosarcoma to the right maxilla from primary osteosarcoma of the left femur is presented. The patient complained of pain and swelling in the left maxillary region which was earlier diagnosed as maxillary sinusitis on the basis of Water's sinus radiograph in a medical hospital. Further radiographic examination with the panoramic and intraoral periapical radiographs done by us and later by fine needle aspiration cytology led us to diagnose a secondary deposits of osteosarcoma.

Total hip arthroplasty for giant cell tumour.

A 32 month follow up of an uncommon case of a Giant Cell Tumour affecting the proximal end of femur is presented. Following a wide excision, the hip was reconstructed using Charnley type of low friction total hip arthroplasty. At a 32 month review, there was no recurrence and the function was good.

Histiocitoma fibroso maligno sobre infarto ósseo e calo de fratura / Malignant fibrous histocytoma on bone infarction and callus frasture

Os autores relatam caso de histiocitoma fibroso maligno que se instalou sobre calo de fratura, em zona onde havia infarto ósseo, em fêmur distal. O tumor surgiu 14 meses após a fratura, tratada conservadoramente em sua cidade. O quadril foi desarticulado com 17 meses de fratura. Apresentam detalhes do exame anatomopatológico e lembram a raridade da associaçao malignidade x infarto ósseo. Nao encontraram relato na literatura de língua inglesa da tríplice associaçao.

Ressecçäo artroscópica de tumor na articulaçäo coxofemoral: relato de um caso / Arthroscopic resection of tumor in the coxofemoral joint: report of a case

Os autores apresentam uma indicaçäo para artroscopia do quadril com diagnóstico de condroma, confirmado por exame anatomopatológico. A indicaçäo do procedimento artroscópico se deu após realizaçäo de diversos exames e constataçäo, à ressonância magnética, de imagem anormal intra-articular na regiäo da fóvea. O objetivo era a biópsia e, se possível, ressecçäo artroscópica, para evitar-se, assim, artrotomia ampla e possibilitar reabilitaçäo mais rápida e menos traumática. Após seguimento aproximado de um ano, o paciente encontra-se assintomático

Hemangiopericytoma of bone--a case report.

A case of low grade hemangiopericytoma of three years duration occurring in the upper end of the femur of a 70 year old man is described. Radiologically, the upper third of the right femur showed a destructive expansile osteolytic lesion with soft tissue extension. The tumour was partially encapsulated. Mitoses were 0-1 per 10 high power fields, suggesting the low grade malignant nature of the lesion. It is felt that all hemangiopericytomas occurring in bone should be considered biologically malignant.

Sarcoma alveolar de partes moles na coxa / Alveolar soft part sarcoma of the thigh

Os autores descrevem, em homem de 25 anos, um caso de sarcoma alveolar de partes moles (SAPM), localizado na coxa direita e com metástases pulmonares. Seis anos antes do aparecimento da neoplasia, o paciente sofreu grave traumatismo, na mesma sede onde se desenvolveu o tumor. Realçam a pouca freqnência da neoplasia, discutem as dificuldades do diagnóstico diferencial, os aspectos histogenéticos, a eventual relaçäo entre o traumatismo e o aparecimento do SAPM e expöem as razöes da conduta adotada.

Clear-cell chondrosarcoma: a case report

Clear-cell chondrosarcoma, a recently specified entity, is a low-grade malignant tumor and has characteristic clinical, roentgenographic and pathologic findings which separate it from conventional chondrosarcoma and other benign tumors. Therefore, correct diagnosis is important from the viewpoint of both prognosis and therapeutic approach. We report a case of typical recurrent clear-cell chordirosarcoma. Typical round cells with clear cytoplasm, large nuclei, and small nucleoli were wellnoted. The clear cytoplasm was faintly positive in PAS staining. Electronmicroscopic study showed that these cells were of chondroid origin, showing indented nuclei, large dilated endoplasmic reticulum cisternae, bundles of actin-like filaments and a few glycogen particles.

Condrosarcoma con componente mesequimal adicional

Reportamos el caso de um paciente masculino de 32 años de edad a quien se le diagnosticó condrosarcoma com componente mesenquimal adicional (CCMA). Revisamos la literatura sobre dicha neoplasia haciendo énfasis en el diagnóstico diferencial con otras neoplasias, debido a su importância pronóstica

Osteosarcoma doble primario o metastasis oseas

Se estudia la historia clínica de una niña en quien se practicó la amputación transescápulotorácica izquierda, cuando tenía siete años de edad, por sarcoma osteogénico en húmero izquierdo; y se le prescribió un tratamiento a base de Ciclofosfamida-Methotrexate-Adriamicina, en ciclos mensuales, durante un año; y durante dos ciclos más, con Methotrexate y Ciclofosfamida. La paciente permaneció bien hasta que presentó, ochenta y ocho meses después, una lesión en el tercio distal del muslo derecho; la biopsia reveló que era un Sarcoma osteogénico. Se le amputó el miembro inferior derecho y se prescribió Ciclofosfamida y Decarbacina. Como tres meses después presentara metástasis en los pulmones, se le administró CisPlatinum. La paciente falleció un año después de la segunda operación. Los autores consideran que la niñita sufrió, por las razones que comentan, de un foco primario de sarcoma osteogénico en 1978, del cual aparentemente curó; y de un segundo foco primario de sarcoma osteogénico con metástasis pulmonar, en 1985