Surgery – MCQ 49 – Acquired (secondary) megacolon
In which of the following conditions acquired (secondary) megacolon is seen?
a) Fissure in-ano
b) Complete absence of parasympathetic ganglion cells
c) Absence of sympathetic ganglion cells
d) Rectal malignancy
Correct answer :
d) Rectal malignancy
Absence of ganglion cells result in congenital megacolon. Fissure in ano causes anal sphincter spasm, but does not result in megacolon. Rectal malignancies cause luminal obstruction leading to development of megacolon.
Read more : Causes of acquired megacolon