**Question:** Carcinoma tongue most frequently develops from -

A. Base of tongue
B. Floor of mouth
C. Ventral surface of tongue
D. Dorsal surface of tongue

**Core Concept:** Carcinoma tongue is a type of oral cancer that originates from the tongue. These tumours can arise from various regions of the tongue, and understanding their origin is crucial for accurate diagnosis and treatment planning.

**Why the Correct Answer is Right:** Carcinoma tongue most frequently develops from the ventral surface of the tongue (Option C). This is due to the high concentration of mucosal cells, which are susceptible to tobacco and alcohol-induced carcinogenesis. The ventral surface of the tongue contains a high density of mucosal cells, providing an ideal environment for the development of oral cancer.

**Why Each Wrong Option is Incorrect:**

A. Base of tongue (Option A): Although oral cancers may develop from the base of the tongue, carcinoma tongue is less common compared to ventral surface carcinomas. The base of the tongue is covered by stratified squamous epithelium, which is less susceptible to carcinogenesis compared to the mucosal cells found on the ventral surface.

B. Floor of mouth (Option B): While oral cancers can originate from the floor of the mouth, carcinoma tongue is more frequent on the ventral surface due to the higher concentration of mucosal cells in that area.

D. Dorsal surface of tongue (Option D): Carcinoma tongue is less likely to develop on the dorsal surface as it has a harder and less mucosalized texture, differing from the ventral surface.

**Clinical Pearl:** It is essential for clinicians to understand the origin of oral cancers, particularly carcinoma tongue, as it influences treatment planning and patient prognosis. A thorough examination of the tongue and surrounding structures is crucial in detecting early signs of cancerous growths.

**Correct Answer:** D. Dorsal surface of tongue.

**Explanation:** Although carcinoma tongue can develop on the dorsal surface, it is less frequent compared to the ventral surface due to the differences in tissue texture and susceptibility to carcinogenesis. The ventral surface has a higher concentration of mucosal cells, which are more prone to tobacco and alcohol-induced carcinogenesis.