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Extra-axial ependymomas are very rare but have been reported in the ovary, broad ligament, sacrococcygeal region, lung, and mediastinum. The histogenesis is obscure, and a thorough(More)
We studied the staining patterns of bronchioloalveolar carcinoma (BAC) with antibodies to cytokeratin (CK) 7, CK20, and thyroid transcription factor-1 (TTF-1) to determine the diagnostic usefulness(More)