Rare metastatic clear cell renal cell carcinoma to pancreas and duodenum revealed by EUS-guided fine-needle biopsy
A 60-year-old male patient was diagnosed with clear cell renal cell carcinoma (ccRCC) 10 years ago (Figure 1) and underwent radical right nephrectomy. The patient recently presented with melena lasting 1 month. Gastroscopy revealed a mucosal elevation in the descending duodenum with an erythematous surface. An adjacent...