Primary retroperitoneal seminoma presented as gastrointestinal bleeding

We are presenting a case report of primary retroperitoneal seminoma, a 66 year old male patients presented with gastrointestinal bleeding, endoscopic visualization of duodenum suggested duodenal mass which was biopsied percutaneously and the pathology report proved it to be retroperitoneal seminoma, further investigations with testicular ultrasound and CT chest did not find other primary for seminoma which confirmed the retroperitoneal mass to be primary retroperitoneal seminoma.