Toxoplasmosis of the stomach: a cause of antral narrowing.

Radiographs of the stomach showed narrowing of the antrum, caused by toxoplasmosis, in a patient with acquired immunodeficiency syndrome (AIDS). A biopsy specimen demonstrated numerous cysts containing Toxoplasma gondii and many free trophozoites. A subsequent brain scan, obtained with computed tomography, showed multiple enhancing lesions throughout the cerebrum, cerebellum, and basal ganglia that were characteristic of toxoplasmosis. Radiographic abnormalities of the stomach are not uncommon in patients with AIDS. They are associated with infections such as cryptosporidiosis and cytomegalovirus and neoplasms such as Kaposi sarcoma and malignant lymphoma. To the authors' knowledge, this is the first reported case of toxoplasmosis involving the stomach.