title: Gastro-intestinal bleeding and malignancy of the testis.
abstract: Three cases of gastro-intestinal bleeding caused by metastasis of a testicular tumour to the duodenum are described. The report illustrates that, particularly in young patients, the possibility of a primary tumour in the testis should be considered when a tumour mass is found in the upper abdomen, even if other symptoms suggestive of primary gastro-intestinal disorders, such as melaena and haematemesis, are also present. As primary malignancies of the small intestine are rare, a presumptive diagnosis of anaplastic duodenal carcinoma should always arouse the suspicion of metastatic rather than primary growth.
mesh_terms: D000293:Adolescent; D000328:Adult; D004379:Duodenal Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D008207:Lymphatic Metastasis; D008220:Lymphography; D008297:Male; D013736:Testicular Neoplasms / Q000175:diagnosis* / Q000473:pathology