Infiltrating myoepithelial carcinoma remains an exceptional entity. Spindle cell morphology seems to be more prominent. However, rhabdoid, epithelioid and plasmacytoid morphologies may be seen. In some cases, this tumor may appear as poor differentiated intraductal carcinoma. Immunohistochemistry is very useful to confirm the diagnosis. Local recurrence and distant metastases are common but treatment is not consensual.We report a case of a 40-year-old woman with an unusual myoepithelial carcinoma. The diagnosis was canceled by the histopathological and immunohistochemical examination of the resected specimen.We discuss clinical and pathological features of myoepithelial carcinoma, which are very important to know by young pathologists.
The epithelioid sarcoma proximal type is an aggressive malignancy tumor affecting young adults and expressing epithelial markers and CD34 (50% of cases). We report a case of epithelioid sarcoma proximal type in pleural localization in a young femelle 26 years. Through our observation we will illustrate the misleading and aggressive nature of this tumor that presents a diagnostic trap. The diagnosis is strictly pathological and need to carry out a thorough pathological examination.
Granular cell tumor (GCT) of the breast is an uncommon and a benign tumor that can mimics carcinoma clinically as well as radiographically. The GCT is characterized by a proliferation of large cells with abundant eosinophilic granular cytoplasm of ubiquitar seat. We report a case of a granular cell tumor of axillary seat in a woman of 47 years. The diagnosis was confirmed at pathologic examination of percutaneous biopsy. The evolution of the granular cell tumor is often favorable. Surgery remains the treatment of choice. The diagnosis is exclusively pathological.
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