Exogastric leiomyoblastoma: a rare gastric neoplasm mimicking left hepatic mass on computed tomography.

Leiomyoblastomas are rare gastric neoplasms that may occur as exogastric masses, producing difficulty in correct localization and diagnosis. Two exogastric leiomyoblastomas were misdiagnosed as primary hepatic lesions due to their appearance on computed tomography. A discussion of these rare neoplasms, the potential for their erroneous diagnosis, and ways to avoid this computed tomography pitfall is presented.