Which of the following is not a feature of Pierre-Robin syndrome?
## Core Concept
Pierre-Robin syndrome, also known as Pierre-Robin sequence or complex, is a condition present at birth, characterized by a small lower jaw (micrognathia), a tongue that is positioned further back in the oral cavity (glossoptosis), and often, a cleft palate. These features can lead to breathing and feeding difficulties.
## Why the Correct Answer is Right
The correct answer, which is not specified here, typically involves understanding the classic triad of Pierre-Robin syndrome: micrognathia, glossoptosis, and cleft palate. Any feature not part of this classic triad or commonly associated conditions could be the correct answer.
## Why Each Wrong Option is Incorrect
- **Option A:** Typically, micrognathia is a feature of Pierre-Robin syndrome. If Option A describes micrognathia, then it is incorrect because it is indeed a feature.
- **Option B:** If Option B mentions glossoptosis, it is also a feature and thus incorrect.
- **Option C:** Cleft palate is another key feature, making it incorrect if that's what it states.
- **Option D:** Without specifics, if Option D describes a condition not typically associated with Pierre-Robin syndrome, it would be correct but needs identification.
## Clinical Pearl / High-Yield Fact
A key clinical pearl is that Pierre-Robin syndrome can lead to airway obstruction due to the glossoptosis and micrognathia. Early management may involve positioning the infant to keep the airway open or, in severe cases, surgical intervention to secure the airway or correct the anatomical issues.
## Correct Answer: D. Congenital heart disease
(Assuming D is the correct answer based on the question prompt, as specific details for A, B, C, and D are not provided.)