What is Caecal adenoma ?

Appendiceal intussusception is an uncommon pathologic condition; however, villous adenoma of the appendix is a distinctly rare entity. We report herein a case of appendiceal intussusception induced by tubulovillous adenoma with carcinoma in situ. A 67-year-old man was admitted to our hospital with a 1-year history of lower abdominal pain for investigation. Barium enema showed a filling defect with an irregular surface in the cecum, and colonoscopy revealed a cecal tumor with a granular surface. Pathological examination of biopsy samples revealed tubulovillous adenoma with well-differentiated adenocarcinouna, and a diagnosis of cecal cancer in tubulovillous adenoma was made. Surgery was performed and the resected specimen was found to contain a tumor arising from the appendix. The tumor was 5.5 * 4.5 cm in size in the cecal cavity, and the appendix had invaginated into the cecum at its base. The cut surface of the appendix showed the villous tumor filling the appendiceal lumen and projecting into the cecal cavity. Microscopic examination revealed well-differentiated adenocarcinoma in tubulovillous adenoma. To the best of our knowledge, this is the first report of appendiceal intussusception caused by tubulovillous adenoma with carcinoma of the appendix.-

The cecum is the location of the adenoma. The cecum (cecal area) is located between the small and large intestine, and that's the general location of the appendix, as well.

Dorland's medical dictionary defines adenoma as: "a benign epithelial tumor in which the cells form recognizable glandular structures or in which the cells are clearly derived from glandular epithelium." In other words, the tissue has mutated from the original tissue.

Although these are benign (not cancerous), they do need to be monitored. In fact, in the cases of tubulovillous adenoma, the doctor will remove part of the large intestine, just to be certain it doesn't turn into cancer.

So, to answer your question: A cecal adenoma is one of these benign tumors (although it needs monitored or removed) in the cecum of the large intestine.