Related Experiment Videos
Polypoid arteriovenous malformation of colon mimicking inflammatory fibroid polyp
Leeso Maeng1, Kyu Yong Choi, Anhi Lee
1Department of Clinical Pathology, Our Lady of Mercy Hospital, The Catholic University of Korea, 665 Bupyung dong, Bupyung-gu, Inchon, 403-026, Korea.
Abstract:
Arteriovenous malformation is a well-known cause of lower gastrointestinal bleeding in the elderly and usually appears as flat or elevated bright red lesions endoscopically. Here we present a 59-year-old woman with a large fungating polypoid mass in the transverse colon. Histologically, the larger vessels were located mainly in the submucosa, and smaller vessels were also observed within the mucosa. Verhoeff's elastic stain showed internal and external elastic lamina in the malformed vessels. We report an extremely rare case of a large, pedunculated, polypoid arterioveneous malformation with the first description of our complete pathological findings.
Related Concept Videos
Diverticular Disease of the Colon
Appendicitis
Inflammatory Bowel Disease I: Ulcerative Colitis
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Inflammatory Bowel Disease II: Ulcerative Colitis
Inflammatory Bowel Disease IV: Clinical Manifestations
Inflammatory Bowel Disease I: Introduction