[Retroperitoneal leiomyosarcoma: a case report].
The Authors report a rare case of retroperitoneal leiomyosarcoma in a 80 years woman with respiratory symptoms and right abdominal pain. A large neoplasm occupied the right abdomen, looking asymmetric. Upper abdominal CT showed a retroperitoneal neoplasm close to right kidney, liver, aponeurosis of right oblique muscles, producing a left-side dislocation of the intraabdominal organs. A surgical "en bloc" resection of the neoplasm was performed; neoplasm was plurilobed and capsulated. The histologic examination confirmed the diagnosis of leiomyosarcoma. The best treatment of these neoplasms is surgery, that in the last years has drawn advantage from more sensible and specific diagnostic procedures, which show a more radical surgical option. Though metastases are occasional, local recurrences can be taken into consideration and, after a careful tumoral re-staging, they can be resected once more. Therefore, a careful follow-up is necessary on the basis of neoplastic grading, extension and involvement of the closer structures.