Radiotherapy-associated intra-abdominal angiosarcoma after prostatic adenocarcinoma: Case reports.

Angiosarcoma is a rare soft tissue neoplasm, which accounts for <1% of all soft tissue tumours. It has been previously reported that the incidence rate of angiosarcomas increases following radiotherapy. The present study reports two cases of intra-abdominal angiosarcoma associated with previous radiotherapy treatment. To the best of our knowledge, these associations have not been previously described in English literature. The patients aged 71 and 83 years were admitted to the center for abdominal pain and diarrhea. Each patient had previously had treatment with radiotherapy for prostate adenocarcinoma. During their hospitalization, biopsies were obtained and the diagnosis of angiosarcoma was reached. In each patient the tumors had irregular proliferating vascular channels, lined by atypical endothelial cells, which varied from elongated and spindle-shaped to large and plump. Immunocytochemistry revealed that the tumor cells were positive for the cytoplasmic endothelial markers cluster of differentiation (CD)31 and CD34. The recognition of these associations is important and their occurrence in this rare type of neoplasm should not mislead the pathologist and cause a misdiagnosis of the sarcoma.

18FDG-PET/CT assessing the absence of cell viability and excluding metastatic disease in a case of necrotic choroidal melanoma.

PURPOSE: To report a case of choroidal melanoma in which the absence of 18FDG-positron emission tomography (PET)/computed tomography (CT) uptake in the whole body scan excluded the presence of any foci of metastases. Additionally, the PET/CT study correctly diagnosed the necrotic character of the lesion. METHODS: A 76-year-old woman with neovascular glaucoma, and without vitreous or retina visualization, was studied by our ophthalmology service. RESULTS: Ocular ultrasound showed an 18 × 16 mm vitreous exophytic image compatible with choroidal melanoma; magnetic resonance gave a 17 × 15 mm exophytic image, highly intense at T1 and hypointense at T2, with cystic and necrotic images after a contrast injection. An 18FDG-PET/CT study revealed a clearly hypometabolic lesion, representing absence of cell viability and excluding active melanoma cells. No other uptake lesions were detected at the whole-body PET/CT scan, assuming the absence of extraocular metastases. The eye was enucleated, and the pathology study showed a 16 × 15 mm necrotic choroidal melanoma. CONCLUSIONS: The 18FDG-PET/CT study correctly depicted the necrotic character of the choroidal melanoma and was able to exclude other foci of metastases.

Carcinoma adrenocortical no funcionante con mielolipoma. Una rara asociación / Non-functioning adrenocortical carcinoma associated with myelolipoma. A case report

El carcinoma adrenocortical es un tumor infrecuente con una incidencia de 1 por millón de habitantes por año. El 80% aproximadamente de estos carcinomas son funcionantes, representando los no funcionantes solo un 20% de los carcinomas comunicados en las mayores series de la literatura. Se trató de paciente masculino de 55 años de edad con tumor adrenal derecho de 75×62mm. La pieza quirúrgica fue procesada para histología e inmunohistoquímica convencional. El tumor estaba constituido por células redondeadas, eosinofílicas, dispuestas en sabanas y en trabéculas. Se observaron de 3–5 figuras de mitosis en 50 campos de gran aumento y se identificó invasión vascular y sinusoidal. Se evidenció la presencia de mielolipoma entremezclado con el tumor y en la periferia del mismo. Solo 5 casos de carcinoma adrenocortical y concomitante mielolipoma han sido descritos en la literatura médica. En nuestro conocimiento mielolipoma asociado con carcinoma adrenocortical no funcionante no ha sido descrito previamente(AU)

Adrenocortical carcinoma is a rare tumour, with an annual incidence of only one case per million. Functioning tumours account for about 80% of all adrenocortical carcinomas, whereas non-functioning tumours are even rarer, accounting for only 20% of adrenal carcinomas in the largest reported series. We present a case of a 75×62mm right adrenal tumour occurring in a 55 year old male. Routine histological and immunohistochemical examinations were carried out on the surgical specimen. The tumour cells were mostly round, eosinophilic cells arranged in a sheet-like or trabecular pattern separated by thick fibrous bands. 3 to 5 mitoses were seen in 50 high-power fields; vascular and sinusoidal invasion was observed. A myelolipoma was found intermixed with the tumour at its periphery. To date, only five cases of adrenocortical carcinoma with concomitant myelolipoma have been published and to the best of our knowledge, this is the first report of myelolipoma associated with non-functioning adrenocortical carcinoma(AU)