As nouns the difference between proctosigmoidoscope and proctosigmoidoscopy
is that proctosigmoidoscope is the instrument used in proctosigmoidoscopy while proctosigmoidoscopy is a combined proctoscopy and sigmoidoscopy.
proctosigmoidoscopy
English
Noun
(proctosigmoidoscopies)
A combined proctoscopy and sigmoidoscopy.