title: Mature teratoma of the testis metastasizing as mature teratoma.
abstract: We report an unusual case of mature teratoma of the testis with retroperitoneal metastasis of mature teratoma. Mature teratoma of the testis should be considered a low grade malignant neoplasm.
mesh_terms: D000328:Adult; D006801:Humans; D008207:Lymphatic Metastasis / Q000473:pathology; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000473:pathology / Q000556:secondary*; D013724:Teratoma / Q000473:pathology / Q000556:secondary*; D013736:Testicular Neoplasms / Q000473:pathology*