## Core Concept
The thyroglossal duct cyst is a congenital anomaly that arises from the thyroglossal duct, which forms during the embryological development of the thyroid gland. This duct usually atrophies and disappears, but remnants can persist and give rise to cysts. Symptomatic thyroglossal duct cysts often present with a palpable neck mass.

## Why the Correct Answer is Right
The definitive treatment for symptomatic thyroglossal duct cysts is the **Sistrunk procedure**, which involves surgical excision of the cyst, the central portion of the hyoid bone, and a core of tissue leading to the base of the tongue. This procedure is necessary to remove the cyst completely and prevent recurrence. The Sistrunk procedure is considered the gold standard because it addresses the tract that connects the cyst to the foramen cecum of the tongue, reducing the risk of recurrence.

## Why Each Wrong Option is Incorrect
**Option A:** Incision and drainage are not sufficient for definitive treatment as they do not address the underlying tract that can lead to recurrence.
**Option B:** Fine-needle aspiration biopsy may help in diagnosing the cyst's nature but is not a treatment and does not prevent recurrence.
**Option C:** Antibiotics may be used to treat infection but do not address the cyst itself and are not a definitive treatment.

## Clinical Pearl / High-Yield Fact
A key clinical pearl is that thyroglossal duct cysts can become infected, and their definitive treatment is surgical, specifically the Sistrunk procedure, to prevent recurrence. These cysts can move with protrusion of the tongue due to their connection to the foramen cecum.

## Correct Answer Line
**Correct Answer: D. Sistrunk procedure.**