Abstract
A 51-year-old man with a past history of cecal tuberculosis presented with abdominal pain. Computed tomography demonstrated a cystic tumor, 2 cm in diameter, beside the cecum ; blood tests showed leukocytosis. On colonoscopy done two months prior, no cystic tumors or submucosal tumors were detected. Given the differential diagnosis of cystic tumor, an ilio-cecal resection was done. The cut surface of the cecum showed an intraluminal stricture between the vermiform appendix and Bauhin's valve, mimicking a cystic tumor, although the surface of the cecum had a normal shape ; no cystic mass was seen. On microscopy, the cecal wall was found to have fibrous thickening and chronic inflammation without caseous necrosis or tubercle bacillus, suggesting old tuberculous cicatrization. In a patient with a cecal cystic tumor a pseudotumor caused by cecal tuberculosis, though rare, should be considered.
