title: Spontaneous maturation in the metastatic region of a bilateral testicular germ cell tumor.
abstract: A case of bilateral testicular germ cell tumor of different cell types was found to have a mature teratoma in the metastatic region. Histology of the right testis revealed seminoma and embryonal carcinoma while the left testis revealed seminoma and mature teratoma. A mature teratoma, containing cartilage components, was also found in the right para-aortic lymph node. The findings of the case are described and the literature on cases with maturation in the metastatic region are reviewed.
mesh_terms: D000328:Adult; D004407:Dysgerminoma / Q000473:pathology / Q000556:secondary*; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D008207:Lymphatic Metastasis; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000473:pathology / Q000556:secondary*; D013724:Teratoma / Q000473:pathology / Q000556:secondary*; D013736:Testicular Neoplasms / Q000473:pathology / Q000556:secondary*; D013737:Testis / Q000473:pathology