Mouse-nibbled apperance of vocal cord is seen in:

**Mouse-nibbled appearance of vocal cord is seen in:**
**Correct Answer: C. Hemorrhagic infarction of vocal cord**

**Core Concept**
The "mouse-nibbled" appearance of the vocal cord is a clinical sign associated with hemorrhagic infarction of the vocal cord, typically resulting from severe laryngeal trauma or hemorrhage. This condition involves ischemic damage to the vocal cord's mucosa and underlying tissues.

**Why the Correct Answer is Right**
Hemorrhagic infarction of the vocal cord leads to a characteristic "mouse-nibbled" appearance due to the presence of multiple small, hemorrhagic lesions on the surface of the vocal cord. This condition arises from a sudden decrease in blood flow to the vocal cord, resulting in ischemic damage and subsequent hemorrhage. The vocal cord's mucosa and underlying tissues are affected, leading to the characteristic appearance.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the mouse-nibbled appearance of the vocal cord.
**Option B:** This option is not directly related to the clinical sign in question.
**Option D:** This option is not a correct association with the mouse-nibbled appearance of the vocal cord.

**Clinical Pearl / High-Yield Fact**
The mouse-nibbled appearance of the vocal cord is a distinctive clinical sign that should be remembered in cases of severe laryngeal trauma or hemorrhage. This condition requires prompt medical attention to prevent further complications.

**Correct Answer: C. Hemorrhagic infarction of vocal cord**