Villous
Rectosigmoid Colon Polyp - Giant Polyp Resection
The following video presents a colonoscopy performed in an elderly patient with diarrhea secondary to a large villous adenoma in the rectosigmoid colon. The patient asked for an endoscopic resection in...
Large Villous Adenoma of the Sigmoid
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...
Large and long stalk villous adenoma inserting...
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...
Enormous 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...
Enormous 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...
Enormous 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...
Villous Colon Adenocarcinoma (5 of 12)
Microscopic specimen of the adenocarcinoma with villous componente.
Tubulo - Villous Rectal Adenoma - Endoscopy (33...
Reinforced ablative therapy with argon plasma coagulator was performed.
Tubulo - Villous Rectal Adenoma - Endoscopy (30...
Two week after a follow up endoscopy was performed Shows the granulation tissue, multiple biopsies were taken, which showed no adenomatous tissue, however reinforced ablative therapy with argon plasma...
Tubulo - Villous Rectal Adenoma - Endoscopy (23...
Final status of endoscopic resection Although some polyps will require surgical removal, most can be removed by an experienced endoscopist. Familiarity with endoscopic hemostasis techniques is an...