title: Malignant papillary mesothelioma of tunica vaginalis testis.
abstract: A malignant papillary mesothelioma of the tunica vaginalis testis with retroperitoneal lymph node and pulmonary metastases is reported in a seventy-seven-year-old man. Electron microscopy of a local recurrence documented its mesothelial origin. The clinical and pathologic features of these rare neoplasms are discussed.
mesh_terms: D000368:Aged; D006801:Humans; D008175:Lung Neoplasms; D008297:Male; D008654:Mesothelioma / Q000473:pathology* / Q000648:ultrastructure; D009362:Neoplasm Metastasis; D013736:Testicular Neoplasms / Q000473:pathology* / Q000648:ultrastructure