colorectal cancer

Question 1

risk factors for colorectal cancer?

Answer 1

old age, IBD, family history, familial adenomatous polyposis, HNCC (lynch syndrome), smoking, alcohol, obesity

Question 2

symptoms with regard to location?

Answer 2

constitutional: fever, night sweats, weight loss, fatigue

-right sided (cecum, ascending, transverse): melena, anemia, diarrhea

-left sided (descending, sigmoid) have smaller lumen and stool is hard so present with obstructive symptoms: decrease stool caliber, constipation, colicky abdomen pain in LLQ from obstruction
it’s mimicking diverticulitis

rectal: hematochezia, low stool caliber

Question 3

diagnosis? finding in barium enema?

Answer 3

DRE: blood/mass

colonoscopy with biopsy and 12 LN biopsies at least
barium enema shows apple core
CT abdomen, pelvis, chest for metastasis