Serous microcystic adenoma of the pancreas

A new case of serous microcystic adenoma in a 75-year-old man is presented. The tumor sized 55x45x55 mm was located in the body and the tail of the pancreas. It was well-circumscribed and spongy on cross-section, with eccentrically located fibrous scar. At microscopic examination, the lesion was composed of many small cystic spaces lined by one layer of flat or cuboidal cells occasionally with clear cytoplasm. A few papillary structures protruding to the lumina of cysts were also seen. Regardless benign nature of the tumor, the patient has died at early postoperative period due to unrelated conditions.