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SURGERY - ABSITE Colon Rectum Anus Exam Questions And 100% Correct Solutions
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SURGERY - ABSITE Colon Rectum Anus ExamQuestions And 100% Correct Solutions
which is a branch of the following- inferior mesenteric artery ?
A. Middle colic artery
B. Ileocolic artery
C. Sigmoidal arteries
D. Right colic artery - ANS Sigmoidal arteries
What percent of the dry weight of feces is composed of bacteria ?
A. 10 %
B. 30 %
C. 50 %
D. 70 % - ANS B. 30 %
Which of the following is related to colorectal carcinoma?
A. Activation of the K -ras gene
B. Activation of APC
C. Activation of DCC (deleted in colorectal carcinoma
D. Activation of p53 - ANSWER A. Activation of the K-ras gene
Deletion in the tumor suppressor phosphatase and tensin homolog (PTEN) is associated
with all of the following EXCEPT
A. Familial adenomatous polyposis
B. Peutz-Jeghers syndrome
C. Juvenile polyposis
,D. Cowden syndrome - ANSWER A. Familial adenomatous polyposis
Which of the following is important in maintaining the integrity of the colonic mucosa ?
A. Short - chain fatty acids
B. Alanine
C. Medium - chain fatty acids
D. Glutamine - ANSWER A. Short - chain fatty acids
The parasympathetic innervations to the transverse colon are from
A. T6 - T12
B. L1 - L3.
C. S2 - S4
D. The vagus nerve - ANSWER D. The vagus nerve
The middle rectal artery takes its origin from the
A. Inferior mesenteric artery
B. Iliac artery
C Internal pudendal artery
D. Inferior epigastric artery - ANSWER B. Iliac artery
Colorectal cancers which develop from defects in the RER ( replication error repair )
pathway when compared to tu mors which develop from the LOH ( loss of heterozygosity
) pathway
A. Occur more commonly in the left colon
B. Have a worse prognosis
C. Possess diploid DNA
D. Express microsatellite instability - ANSWER D. Express microsatellite instability
, Extensive perianal condyloma accuminata is best treated with
A. Topical steroids
B. Topical podophyllin
C. Topical imiquimod
D. Surgical resection and fulguration - ANSWER D. Surgical resection and fulguration
Which of the following manometric findings indicates dysfunction of the internal
sphincter ?
A. Rest pressure 20 mmHg
B. Squeeze pressure 60 mmHg
C. High pressure zone 2 cm
D. Presence of a rectoanal inhibitory reflex - ANSWER A. Rest pressure 20 mmHg
The treatment of choice for acute anal fissures is
A. Excision and primary closure
B. Lateral internal sphincterotomy
C. Botulinum injection
D. Laxatives and sitz baths - ANSWER D. Laxatives and sitz baths
A patient with obstipation and abdominal distention pres-ents to the emergency room.
Based on the results of the contrast enema shown in Fig. 29-4 the next step in
man-agement should be
A. NG suction, bowel rest, and observation
B. Enemas until the obstruction is relieved
C. Proctoscopy
D. Exploratory laparotomy - ANSWER C. Proctoscopy
Elective proctocolectomy should be advised for which of the following patients with
ulcerative colitis ?
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