Okay, let's tackle this question about thyroglossal cyst. The question is asking which statement is not true. First, I need to remember the key facts about thyroglossal cysts.

Thyroglossal cysts are congenital anomalies resulting from the persistence of the thyroglossal duct. They typically present as midline neck masses that move upward when the tongue is protruded because they're connected to the foramen cecum. The treatment is usually surgical excision, specifically the Sistrunk procedure, which involves removing the cyst along with the central portion of the hyoid bone to prevent recurrence.

Now, looking at the options, the correct answer is the one that's incorrect. Let's consider each option. For example, if one option says the cyst is lateral, that's wrong because thyroglossal cysts are midline. Another might incorrectly state that it doesn't move with tongue protrusion, which would also be false. Another wrong option could be that it's associated with the fourth pharyngeal pouch, which is incorrect since they're from the thyroglossal duct, not pharyngeal pouches. Also, if an option mentions that the cyst is not connected to the foramen cecum, that's incorrect.

The clinical pearl here is that the Sistrunk procedure is crucial to remove the hyoid bone part to prevent recurrence. Students often confuse thyroglossal cysts with branchial cleft cysts, which are lateral and from different embryological origins.

**Core Concept**
Thyroglossal cysts arise from remnants of the thyroglossal duct, an embryonic structure that migrates to form the thyroid gland. Key clinical features include midline neck location, upward movement with tongue protrusion, and association with the foramen cecum.

**Why the Correct Answer is Right**
The incorrect statement is likely **Option B** ("It is lateral to the sternocleidomastoid muscle"). Thyroglossal cysts are **midline** (not lateral) and are connected to the foramen cecum of the tongue. Lateral neck masses are more typical of branchial cleft cysts, not thyroglossal anomalies.

**Why Each Wrong Option is Incorrect**
**Option A:** If "It moves upward with tongue protrusion" is listed, this is correct and not the exception.
**Option C:** If "It is lined by stratified squamous epithelium" is stated, this is correct (thyroglossal cysts often have squamous or columnar epithelium).
**Option D:** If "Surgical excision includes the central hyoid bone" is listed, this is accurate (Sistrunk procedure prevents recurrence).

**Clinical Pearl / High-Yield Fact**
**Midline neck masses** that move with tongue protrusion are **thyroglossal cysts**. The **Sistrunk procedure** is essential to remove the central hyoid bone fragment and duct remnants to reduce recurrence. Avoid confusion with **branchial cleft cysts** (lateral neck, no tongue movement).

**Correct Answer: B. It is lateral to the sternocleidomastoid muscle**

✓ Correct Answer: C. Incision and drainage is the treatment of choice