Retroperitoneal malignant fibrous histiocytoma without histological atypias

A case of a 36-year-old woman suspected of hepatic hydatid cyst with dyseptic symptoms, hepatomegalia, profound pains in the right hypochondrium is presented. During the operation a 15/12/17 cm well-incapsulated tumour is extirpated. The tumour stretched from the upper right renal pole behind the right hepatic lobe as far as the diaphragm and while sectioning it was grey and orange. Histopathologically we found a fibrous histiocytoma with zones of storiform fascicular pattern alternating with areas of histocytic cells with vacuolar-foamy cytoplasm, rich in lipids and without atypias or mitoses. We report the frequency, histological aspects of the fibrous histiocytomas as well as some particularities of their retroperitoneal location.

Mammary carcinosarcoma with osteochondrosarcomatous differentiations

The case of a 77-year-old woman with a 6/5/4.5 cm, mobile, hard, white-yellowish tumour associated with axillary adenopathy, with a progressive evolution in the upper external frame of the right breast is presented. The histopathological examination, carried out after the radical mammectomy, revealed zones with plates of slightly differentiated carcinomatous cells forming keratose pearls next to dense mixofibrochondrosarcomatous proliferations. The scarcity of these tumors as well as the mammary sarcomas and histogenesis questions are discussed.

Carcinosarcoma of the kidney (nephroblastoma in an adult). Case report

There was reported a case of a 57-year-old man with right renal colics and haematuria for the past 12 years, supposed to be caused by renal cysts and pyelonephritis. The latest echographs and functional explorations show an expanded right kidney with frequent cysts. The extirpated kidney is about 12/15 cm in size and has an encephaloid tumour in the pyelocalycial areas penetrating in the surrounding parenchyma. The histological picture is that of a carcinosarcoma, showing a possible origin in the restant multipotent cells of the nephrogenic blastoma.