Primary extratesticular seminoma in non-twin brothers.
D000293:Adolescent; D000328:Adult; D001859:Bone Neoplasms / Q000532:radiotherapy; D004407:Dysgerminoma / Q000235:genetics*; D006801:Humans; D006811:Humerus; D008207:Lymphatic Metastasis; D008297:Male; D008479:Mediastinal Neoplasms / Q000601:surgery; D009362:Neoplasm Metastasis; D012186:Retroperitoneal Neoplasms / Q000532:radiotherapy; D012886:Skull