A child presents with an expansile swelling on medial side of the nose. Likely diagnosis is:
**Core Concept**
The question is testing the knowledge of a specific type of nasal swelling that is characteristic of a particular condition. The condition is related to an abnormal growth of bone or cartilage in the nasal cavity, which can lead to an expansile swelling.
**Why the Correct Answer is Right**
The likely diagnosis is a Nasal Encephalocele, which is a congenital defect that occurs when there is a herniation of the brain or meninges through a defect in the nasal septum or cribriform plate. This condition is often associated with an expansile swelling on the medial side of the nose, which can be tender to the touch. The swelling can be accompanied by other symptoms such as nasal discharge, bleeding, or a change in the sense of smell.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not directly related to the condition described in the question.
* **Option B:** This option is incorrect because it does not accurately describe the condition.
* **Option D:** This option is incorrect because it is not a common cause of expansile swelling on the medial side of the nose.
**Clinical Pearl / High-Yield Fact**
A Nasal Encephalocele is a type of congenital nasal deformity that can be associated with other anomalies such as cleft palate, hydrocephalus, or meningomyelocele. It is essential to consider this condition in the differential diagnosis of a child presenting with an expansile swelling on the medial side of the nose.
**Correct Answer: C. Nasal Encephalocele**