Search

Villous tumors of the stomach and small bowel are premalignant lesions with focal adenocarcinomatous change as high as 72%. They are frequently multiple and associated with other gastrointestinal neoplasms. Thirty percent of those in the stomach are associated with an independent gastric carcinoma. Villous tumors have morphological features that facilitate specific roentgenographic diagnosis. Endoscopic biopsy may confirm the diagnosis but may give false-negative results for malignant neoplasms and therefore should not delay treatment. After diagnosis, surgical resection is mandatory and subsequent radiological-endoscopic follow-up is essential.

Gray-scale ultrasonography and angiography were performed on 5 patients with cavernous hemangioma of the liver. Four patients also had radionuclide scans and 2 had computed tomography. Angiography was the most specific diagnostic examination; the findings of the other 3 techniques were nonspecific, yet valuable for initial identification of the lesions and their characterization as solid tumors.