Intrathoracic rhabdoid carcinoma: a clinicopathological, immunohistochemical, and ultrastructural study of 6 cases.

We evaluated the clinicopathological spectrum of intrathoracic rhabdoid carcinoma, including its immunophenotype and ultrastructural features. Our series included 6 cases arising from the lung (4 cases) and the anterior mediastinum (2 cases). The patients were 4 men and 1 woman aged between 40 and 63 years (median, 53 years).

Myxofibrosarcoma of the breast as an unusual variant of malignant fibrous histiocytoma: report of a case.

Soft tissue sarcomas of the breast account for less than 1% of all malignant breast tumors. The majority of these lesions have an epithelial component and are thus classified as "cystosarcoma phyllodes." All other types of sarcomas are categorized according to the existing histological soft tissue classification.

Myxoinflammatory fibroblastic sarcoma: a tumor not restricted to acral sites.

We report on nine new cases of myxoinflammatory fibroblastic sarcoma; in six of them the location of the tumor was distal (acral), and proximal in three (forearm, arm, and thigh). Tumors varied in size from 1.5 to 18 cm, were well-circumscribed, yellow-tan, and focally myxomatous.