title: Retroperitoneal seminomas without evidence of primary growth.
mesh_terms: D000328:Adult; D001706:Biopsy; D004407:Dysgerminoma / Q000473:pathology*; D006801:Humans; D008220:Lymphography; D008297:Male; D009362:Neoplasm Metastasis / Q000532:radiotherapy; D012186:Retroperitoneal Neoplasms / Q000473:pathology*; D018310:Sertoli-Leydig Cell Tumor / Q000473:pathology; D013736:Testicular Neoplasms / Q000473:pathology