Abstract
A 74-year-old man was admitted to our hospital with hypochondriac pain. Enhanced abdominal CT revealed a tumor 7 cm in diameter in the tail of the pancreas. MRCP revealed a filling defect in the tail of the pancreatic duct. A distal pancreatectomy was performed. The tumor invaded the stomach, spleen, transverse colon and left renal fascia. Resections were thus performed. Pathological examination demonstrated an undifferentiated carcinoma of the pancreas. Tumor cells stained positive for CEA, CA19-9, Cytokeratin19 and Vimentin. Gemcitabine+S-1 combination therapy was administered for 1 year after surgery. The patient has been followed up for 5 years and 11 months, to date, without evidence of recurrence.