Killian term is used for which of the following polyp
**Core Concept**
The Killian dehiscence or Killian's triangle is a weak area in the lateral wall of the pharynx, where the constrictor muscles meet. A polypoid lesion in this region is known as a Killian-Jamieson anastomotic polyp.
**Why the Correct Answer is Right**
The Killian-Jamieson anastomotic polyp arises from the anastomotic area between the constrictor muscles of the pharynx, specifically within Killian's triangle. This area is prone to polypoid lesions due to the presence of ectopic gastric mucosa. The ectopic gastric mucosa secretes acid and pepsin, leading to chronic inflammation and eventually, polyp formation.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because the Killian-Jamieson anastomotic polyp is specifically associated with the lateral wall of the pharynx, not the posterior wall.
* **Option B:** This option is incorrect because a polypoid lesion in the nasopharynx would be more likely to be associated with a different etiology, such as a nasopharyngeal carcinoma.
* **Option D:** This option is incorrect because a polypoid lesion in the larynx would be more likely to be associated with laryngeal papillomatosis or other laryngeal pathologies.
**Clinical Pearl / High-Yield Fact**
The Killian-Jamieson anastomotic polyp is a rare but important entity to recognize, as it can mimic other pharyngeal pathologies and may require endoscopic removal to prevent complications.
**Correct Answer:** C.