Which of the following is TRUE about Zenker’s diveiculum?
**Question:** Which of the following is TRUE about Zenker's diverticulum?
A. Zenker's diverticulum is a congenital abnormality
B. Zenker's diverticulum is more common in females
C. Zenker's diverticulum causes symptoms due to pressure on the surrounding structures
D. Zenker's diverticulum is a type of esophageal diverticulum
**Core Concept:**
Zenker's diverticulum is a type of esophageal diverticulum, a small pouch-like structure that protrudes from the posterior wall of the hypopharynx. It is not a congenital abnormality, but rather develops later in life due to the weakening of the mid-cervical esophageal wall. The diverticulum is more common in elderly individuals, particularly those with weakened neck muscles and decreased swallowing efficiency.
**Why the Correct Answer is Right:**
Zenker's diverticulum is a type of esophageal diverticulum, which is a protrusion of the muscular layers from the posterior wall of the hypopharynx. It is not a congenital abnormality but develops later in life due to the weakening of the mid-cervical esophageal wall. The correct answer is D because it accurately describes the nature of Zenker's diverticulum as an esophageal diverticulum.
**Why Each Wrong Option is Incorrect:**
A) Zenker's diverticulum is not a congenital abnormality, but rather develops later in life. This makes option A false.
B) Gender distribution does not affect the development of Zenker's diverticulum. The correct answer is independent of gender, making option B false.
C) While Zenker's diverticulum can cause symptoms due to pressure on surrounding structures, it is not solely caused by pressure on these structures. This makes option C false.
**Clinical Pearl:**
Zenker's diverticulum is more common in elderly individuals due to the weakening of neck muscles and decreased swallowing efficiency. It is essential for medical students and residents to understand the correct definition of Zenker's diverticulum to correctly diagnose and manage patients with symptoms like dysphagia, odynophagia (painful swallowing), and regurgitation.