Endosonographic diagnosis of recurrent gastrointestinal stromal tumors associated with Carney's syndrome.

This is a report of a patient who manifests all of the features of Carney's syndrome, including gastrointestinal stromal tumors (GISTs), extra-adrenal paragangliomas, and pulmonary chondromas. The patient underwent surgical resection of a gastric GIST; a retroperitoneal, nonfunctional paraganglioma; and a mediastinal, catecholamine-secreting paraganglioma (pheochromocytoma). Recently, new gastric GISTs were diagnosed by endoscopic, ultrasound-guided, fine-needle aspiration (EUS-FNA) biopsy and were resected. Recurrence of stromal tumors following complete resection is common in Carney's syndrome and presents considerable management challenges. This case illustrates several important points: (1) Carney's syndrome, although rare, should be considered in patients with foregut GISTs; (2) GISTs associated with Carney's syndrome, like sporadic gastric GISTs, may have a more indolent clinical course; and (3) EUS-FNA may be useful for the diagnosis and management of GISTs in this syndrome.