Primary mesenchymal tumors of the pancreas are extremely rare. Sarcoma-type lesions constitute about 1% of all malignant neoplasms. Cases have been described in world literature as: leiomyosarcoma, fibrosarcoma, carcinosarcoma,

rhabdomyosarcoma, liposarcoma, hemangioendothelioma, malignant neurilemoma, and malignant fibrous histiocytoma. We report a case of a 75-year-old woman with a tumor de­scribed as a postinflammatory cyst, despite lack of acute pancreatitis in anamnesis. The patient was treated operatively. Intraoperatively we found an orange-sized pancreatic tumor, infiltrating the back wall of the stomach and responsible for portal hypertension. The tumor together with the distal 2/3 of the stomach and spleen, pancreatic body and tail was resected. The pathologist diagnosed: pleomorphic sarcoma, probable histiocytic fibrosarcoma.