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gi pathology Exam | QUESTIONS with 100% Solutions Rated A+
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gi pathology Exam | QUESTIONS with100% Solutions Rated A+
What is the morphology of intestinal- type gastric adenocarcinoma?
Bulky and glandular
What is the morphology of diffuse gastric adenocarcinoma?
Infiltrative tumours. Imparts a leather bottle appearance with desmoplastic reaction.
Fibrotic tissue desposition.
What is duodenal atresia?
Congential malformation of the duodenum, resulting in blind termination
Where might free air be introduced in a bowel perforation?
Intraperitoneal
Retroperitoneal
What are some causes of gastroduodenal bleeding?
PUD
Inflammation of the stomach, esophagus or duodenum
Mallory wiess tear
iatrogenic
What are some extrinsic causes of small bowel obstructions?
Fibrous adhesions
Abdominal hernias
Endometriosis
Neoplasms
What are some congenital causes of small bowel obstructions?
Jejunal atresia
Ileal atresia
Mesenteric cyst
Meckel diverticulum
, What are some intrinsic causes of small bowel obstructions?
Inflammation (crohns, IBS, gastroenteritis etc.)
Intestinal ischemia
Intussusception
Describe how a small bowel obstruction leads to vomiting and diarrhea
Bowel dilation caused by the obstruction stimulates secretory action of cells, and
increase peristalsis, building to spasm. Fluid retention in the walls of the small
intestine cause oliguria and dry tongue.
Describe the morphological features of ischemic bowel disease
Ulcerated mucosa that slough off into the bowel, leading to submucosal hemorrhage.
Bowel wall is thickened by intersitial oedema.
Clinical presentations of ischemic bowel disease
Intense viceral pain
GI bleeding
Disruption of mucosal barrier leads to septic shock from intestinal toxins
Common causes of Ischemic Bowel Disease
SMA or SMV occulsion
Non occlusive: Blunt trauma, medication induced vasoconstriction, hypotension
Small bowel obstruction: increased resistance to blood flow via hydrostatic
pressure buildup & bowel wall tension
Inflammatory Bowel Disease encompasses which two diseases?
Crohn's and Ulcerative colitis
Where can Crohn's disease occur?
Anywhere in the GI tract
where can ulcerative colitis occur?
only in the colon
What is peritonitis?
inflammation of the peritoneum in local or general form. Contamination of
the peritoneum by foreign agent can cause production of transudate/exudate.
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