Session 7- Distal GI tract pathology+ IBD Flashcards
How are the different thirds of the rectum associated with the peritoneum?
Upper 1/3: intraperitoneal
Middle 1/3: retroperitoneal
Lower 1/3: no peritoneum
What name is given to the mesentery of the transverse colon?
Transverse mesocolon
Which branch of the superior mesenteric artery supplies the caecum?
Ileo-colic artery
Which branch of the superior mesenteric artery supplies the ascending colon?
Right colic artery
Which branch of the superior mesenteric artery supplies the transverse colon?
Middle colic artery
Which branches of the inferior mesenteric artery supplies the descending colon?
Left colic and sigmoid arteries
Which branch of the inferior mesenteric artery supplies the upper third of the rectum?
Superior rectal artery
Which veins do the midgut and hindgut drain into?
Midgut- superior mesenteric vein
Hindgut- inferior mesenteric vein
Which veins do the different third of the rectum drain into?
Upper 1/3: superior rectal vein
Lower 2/3s: systemic venous system
The contraction of which longitudinal muscle forms haustra in the colon?
Taenia colon
What are the two common types of inflammatory bowel disease?
Crohn’s and ulcerative colitis
What are some extra-intestinal problems associated with IBD?
MSK pain, erythema nodosum, psoriasis
What on microscopic pathology would be indicative of Crohn’s over UC?
Granuloma formation
What are some gross pathological changes seen in Crohn’s?
Skip lesions, cobblestone appearance, fistula and strictures
What radiological features are seen on double contrast enema with UC?
Lead pipe colon appearance, loss of haustra, continuous lesions, mucosal inflammation
