colon

CEA

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True regarding CEA is 

  1. Low specificity
  2. Falls after 1 week of surgery to baseline
  3. Preoperative high value is good prognostic marker
  4. Follow up, first test of CEA in 8-10 days followed by weekly tests thereafter

Answer after Q 20

Crohn Extraintestinal manifestations

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Q) Extra intestinal manifestation of Ulcerative Colitis  not cured by surgery

a) PSC

b) Sacro ileitis

c) Episcleritis

d) Erythema nodosum

Questions on colon 21-30

Ans ) a PSC 

Arthritis,  ankylosing  spondylitis,  erythema  nodosum,  and  pyoderma  gangrenosum  typically  improve  or  completely  resolve after  colectomy.

PSC  occurs  in  5%  to  8%  of  patients  with  ulcerative  colitis. 

HLA-B8  or HLA-DR3  haplotype  are  10  times  more  likely  to  develop  PSC. 

The  risk  for  colon  cancer   in these  patients  is  up  to  five  times  greater   than  in  patients  with ulcerative  colitis  alone.  These  tumors  are  more  likely  to  arise proximal  to  the  splenic  flexure . Colectomy  has  no  effect  on  the course  of  PSC.

 

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Poor Prognosis in colon polyp

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Q) All are poor prognostic factors in colonic polyp except?

a) Poorly diff in the head

b) Moderately differentiated polyp

c)  Involving the stalk

d) Margins positive

Answer

Poor prognostic factors in a polyp aare

1. histologically  poorly  differentiated invasive  carcinoma

2. cancer  cells  observed  in  the lymphovascular  spaces,  there  is  a  more  than  a  10%.......... 

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Colon Volvulus

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Q) Regarding colonic volvulus all are true except

a) Sigmoid volvulus without gangrene – colonoscopic decompression is the treatment of choice

b) Caecal bascule has high chance of gangrene due to torsion of mesentary

c) Splenic flexure volvulus has better prognosis than transverse colon volvulus

d) Recurrence rate after detorsion of cecal volvulus is 10-20%

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Colon Bleeding

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Q) True statement about  colonic bleeding:     More Questions on colon

a) Bleeding from diverticulitis is severe and often requires interventional procedures to stop it

b) In colitis risk of brisk bleeding is less and diarrhea is absent

c) In haemaorrhoids,  haemodynamic compromise is rare

d) Bleeding from angiodysplasia is always slight and managed endoscopically

Colonic Diverticula

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Colonic Diverticulosis MCQ | NEET SS Surgery
COLORECTAL SURGERY MCQ | NEET SS

Colonic Diverticulosis

A 62-year-old man presents with intermittent left lower abdominal pain and altered bowel habits. Colonoscopy reveals multiple diverticula in the sigmoid colon. Which of the following is NOT associated with the development of colonic diverticulosis?

A. High-fibre diet
B. Increased intraluminal pressure
C. Disordered colonic motility
D. Age-related changes in colonic wall structure

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Colonic Diverticulosis: Important Exam Notes

Colonic diverticulosis refers to the presence of diverticula in the colon. Most acquired colonic diverticula are pseudodiverticula, in which mucosa and submucosa protrude through the muscular layer at points of weakness.

Common site

In Western populations, diverticulosis commonly affects the sigmoid colon. The distribution varies between populations, and right-sided disease is more common in some Asian populations.

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