EN
Somatostatinoma is the rarest neuroendocrine tumor of the digestive tract. About 60% of somatostatinomas arise in the pancreas. This study presents a case of a 51-year-old male patient with tumor of the pancreas. Despite wide preoperative diagnostic examinations, it was impossible to determine the histological type of the tumor preoperatively. The patient was qualified for surgical procedure, during which the tumor was enucleated. The tumor was classified as somatostatinoma through immunohistochemical examination. The postoperative course was complicated by a small fluid collection, which arose in area of enucleation; the cistern was absorbed spontaneously. Currently, the patient is under surgical ambulatory care and is in general, in good condition.