Which of the following best differentiates antrochoanal polyp from ethmoidal polyp?

NEET SS
#1

Which of the following best differentiates antrochoanal polyp from ethmoidal polyp?

    1. They are multiple
    1. Best seen on posterior rhinoscopy
    1. They are bilateral
    1. Reurrence on polypectomy

0 voters

exp:

  • Antrochoanal polyp grows backward (posteriorly), therefore, it may not be visible on anterior rhinoscopy, while posterior rhinoscopy shows smooth, greyish white, spherical mass in choana.
  • On the other hand, ethmoidal polyps grow anteriorly. Therefore, they are best seen on anterior rhinoscopy and may not be seen on posterior rhinoscopy.