adenoma
Flat Ulcerated Tubular Adenoma
Flat ulcerated tubular adenoma in the ascending colon that caused severe hemorrhage and hypovolemic shock.
Villous Adenoma
The cancer risk of a tubular adenoma is controversial, but strong evidence suggests that it can become malignant. Risk of malignancy is related to size; a 1.5-cm tubular adenoma has a 2% risk. As its...
Pediculated Tubular Adenoma
Colonoscopic picture of a pediculated tubular adenoma. Note the stalk and raspberry-like appearance of the polyp. Most adenomas are encountered incidentally during colorectal cancer surveillance.
Stalk Villous Adenoma (1 of 2)
Polyps are classified based on the type of tissue they contain: Tubular adenomas are the most common type. About 80% to 86% of adenomatous polyps are this type. Tubular adenomas are the polyps that...
Tubular Adenoma
Of the third rectal valve some diverticulae are observed nearby. Most colonic polyps are asymptomatics. Adenomoatous Polyps result of epithelial and dysplasia. Tree types: tubular, villous and...
Flat Adenoma (2 of 3)
High magnification with Cresyl violet. Dye spray technique may result in a higher detection rate of flat colonic lesions. Clinical usefulness of high-resolution chromoendoscopy, i.e. colonoscopy...
Flat Adenoma (1 of 3)
Flat Adenoma of the third rectal valve, with irregular surface is appreciated.
Sessile Villous Adenoma (3 of 3)
Villous Adenoma, after spraying methilene blue. Adenomas are believed to have an abnormal process of cell proliferation and apoptosis. The proliferative component is not confined to the crypt base...
Sessile Villous Adenoma (2 of 3)
The immediate risks of adenomas include hemorrhage, obstruction with intussusception, and, possibly, torsion. However, the main concern is malignant progression of the villous adenoma. Studies have...
Sessile Villous Adenoma (1 of 3)
An 80 year-old female have a sessile mass between the first and second rectal valves. Morphologically, villous adenomas of the colon are generally sessile and papilliferous. Lesions that tend to...
Tubulo-Villous Adenoma
Adenomatous polyps are, by definition, neoplastic. Although benign, they are the direct precursors of adenocarcinomas and follow a predictable cancerous temporal course unless interrupted by treatment....
Sessile Tubulovillous Adenoma (11 of 11)
The fragment of the polyps have been falled out. Shown here after removal of the polyp.
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