Upper gastrointestinal bleeding arising from metastatic testicular tumor.

We report a young man with a testicular tumor in whom the first symptom was upper gastrointestinal bleeding. This was caused by invasion of the duodenum by a metastatic lesion in a retroperitoneal lymph node. Metastatic testicular tumor is a rare cause of upper gastrointestinal bleeding. Diagnosis was difficult because the primary lesion could not be found initially. In young men with upper gastrointestinal bleeding, the possibility of metastatic testicular tumor should be investigated.