[Benign schwannoma of the celiac tripod simulating a pancreatic neoplasm].

The authors present a rare case of benign retroperitoneal schwannoma; initially diagnosed as a neoplasm of the pancreas. A comprehensive review of the literature is employed to focus on the main problems involved in the management of this disease: difficulty in formulating a diagnosis, due to the non-specific nature of clinical manifestations; and difficulty in formulating a prognosis, because of the lack of criteria available for distinguishing benign from malignant forms.