“…The stalk of attachment within the medial wall is not usually identified by imaging, but a large, pedunculated polyp will expand into and fill the nasal cavity and/or pharynx [55,62,64,65]. Uncommonly, choanal polyps will arise from the sphenoid or ethmoid sinus, referred to as sphenochoanal or ethmochoanal polyps, revealing a stalk of attachment in the named sinus [61]. Conservative combination endoscopic (Functional Endoscopic Sinus Surgery: FESS) and open surgery (miniCaldwell procedure) to include the stalk and sinus contents, seems to yield the lowest risk of recurrence [55,60,64], especially if the point of attachment cannot be identified.…”