[Waldenström's macroglobulinemia with an uncommon presentation]. / Macroglobulinémie de Waldenström: à propos d'une présentation clinicobiologique peu commune.

Waldenström's macroglobulinemia is a rare disease with an indolent clinical course. The median age of the affected patient is 65 years. Nevertheless, we report a case of Waldenström's macroglobulinemia revealed by a splenomegaly and severe pancytopenia, in a 51-year-old man without previous medical history. According to the recent consensus recommendations for the clinicopathological definition of Waldenström's macroglobulinemia, diagnosis was made through morphological and immunophenotypic data of medullary cells. The reduced survival of the patient is associated with the importance of the cytopenia.

[Metastatic cancer of the prostate in a young 40 year-old HIV-infected male patient]. / Cancer de prostate métastatique chez un jeune adulte de 40 ans infecté par le VIH.

INTRODUCTION: Cancer of the prostate in HIV-infected patients has rarely been reported in the literature. OBSERVATION: A 40 year-old man presented with an adenocarcinoma of the prostate and bone and glandular metastases. The patient exhibited HIV seropositivity stage B1, the immune-virology of which was well controlled by antiretroviral tritherapy. COMMENTS: The relationship between cancer and HIV has been established for certain cancers such as Hodgkin's disease, non-Hodgkin malignant lymphoma, Kaposi's sarcoma and invasive cancers of the uterine neck in women. The significant increase in some cancers in patients infected by HIV (lung, penis, soft tissue, lips, seminoma) suggests the potential association with immunodepression unless it corresponds to a risk induced by antiretroviral treatments in the long term.

[Metastatic cancer of the prostate in a 40-year-old HIV-infected male patient]. / Cancer de prostate métastatique chez un jeune adulte de 40 ans infecté par le VIH.

INTRODUCTION: Cancer of the prostate in HIV-infected patients has rarely been reported in the literature. OBSERVATION: A 40-year-old man presented with an adenocarcinoma of the prostate and bone and glandular metastases. The patient exhibited HIV seropositivity stage B1, the immune-virology of which was well controlled by antiretroviral tritherapy. COMMENTS: The relationship between cancer and HIV has been established for certain cancers such as Hodgkin's disease, non-Hodgkin malignant lymphoma, Kaposi's sarcoma and invasive cancers of the uterine neck in women. The significant increase in some cancers in patients infected by HIV (lung, penis, soft tissue, lips, seminoma) suggests the potential association with immunodepression unless it corresponds to a risk induced by antiretroviral treatments in the long term.

[Breast chondrosarcoma: a case report and review]. / Chondrosarcome du sein: à propos d'un cas.

Sarcomas of the breast are relatively rare and account for 1% of all primary malignant tumors of the breast. Only 4 cases of pure chondrosarcoma of the breast have been published. We report an additional case in a fifty-seven-year-old woman. Histological and immunohistological characteristics were similar to those described in other localizations. Differential diagnosis involves cystosarcoma phyllodes and breast metaplastic carcinoma with chondroid differentiation. The prognosis is likely to be the same as in other chondrosarcomas.

[Clear cell sarcoma (malignant melanoma of soft tissues) of the calf ]. / Sarcome à cellules claires (mélanome malin des tissus mous) du mollet.

Clear cell sarcoma (malignant melanoma of soft parts) is a rare malignancy that is found in the young adult, and is generally located in the extremities of the limbs. In this study, a new case has been reported in a 24-year old male with no previous history of cutaneous melanoma. The tumor consisted of fusiform or round cells with clear or granulocytic cytoplasm and vesicular nuclei. The patient was treated by surgical resection of the tumor and postoperative radiotherapy. Eight years later, metastatic nodes were detected in the inguinal region. The histogenesis of this tumor has not yet been determined, and it poses a diagnostic problem for pathologists as it can be mistaken for a malignant metastatic cutaneous melanoma.

[Primary muscular antro-pyloric hypertrophy in the adult: case report]. / L'hypertrophie musculaire primitive antro-pylorique de l'adulte: à propos d'un cas.

Primary hypertrophic antro-pyloric stenosis in adults is a misleading anatomic and radioclinical entity. It consists of hypertrophy of the internal muscular layer. Distal gastrectomy is the only effective treatment of the symptomatic form and allows a pathologic study of the gastrectomy, thus ruling out most causes of obstruction, including neoplastic ones. Its congenital origin has not been established. We report the case of a 59 year-old man who had primary hypertrophic pyloric stenosis.

[Pancreatic metastasis of a renal adenocarcinoma. Apropos of 2 cases]. / Métastase pancréatique d'un adénocarcinome rénal. A propos de 2 cas.

The pancreas is an uncommon site of metastasis for renal cell carcinoma. We report 2 cases of patients who underwent total and subtotal pancreatectomy 13 and 10 years after resection of the primary tumor. One of the patients already had liver and cerebellum metastasis, the second one had a solitary metastasis to the pancreas. In both cases, tumoral proliferation invaded the lumen of the Wirsung, and in one case was prominent through the papillae.