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NEET MDS Quiz - Practice Test
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Practice Test

oral pathology - 3 Questions

1
Oral Pathology
Gingiva is most commonly affected by deficiency of  
 1. Vitamin A
 2. Vitamin D
 3. Vitamin C
 4. Vitamin B

📝 Explanation:

Gingiva is most commonly affected by a deficiency of Vitamin C.

2
Oral Pathology
Usually major salivary glands are affected by tumours and malignancies but which of the following tumours affects palatal salivary glands
1) Adenoid cystic carcinoma
2) Acinic cell carcinoma
3) Mucoepidermoid carcinoma
4) Clear cell carcinoma

📝 Explanation:

Mucoepidermoid carcinoma (MEC) is the most common malignant tumour of the minor salivary glands overall, especially the palate.

Adenoid cystic carcinoma is the second most common malignant tumour of minor salivary glands and also strongly associated with the palate, but less common than MEC.


Parotid gland → Most common site overall for salivary gland tumors.

Palate (minor salivary glands) → Most common site for mucoepidermoid carcinoma.

Adenoid cystic carcinoma → Known for perineural invasion, often seen in minor salivary glands too.

Acinic cell carcinoma → More common in parotid.

Clear cell carcinoma → Rare, can occur in minor glands but not typical for palate.

3
Oral Pathology
Large anterior fontanelles, open structure, slanting eyes, decreased sexual development, macroglossia and enamel hypoplasia are seen in 
 1. Carniofacial dysostosis
 2. Down"s syndrome
 3. Treacher Collins syndrome
 4. Marfan"s syndrome

📝 Explanation:

Down syndrome is characterized by large anterior fontanelles that close late, open sutures, slanting palpebral fissures (mongoloid), decreased sexual development due to hypogonadism, macroglossia (enlarged tongue), and enamel hypoplasia leading to increased caries susceptibility. These features are pathognomonic of trisomy 21. Other syndromes do not present with this specific constellation of findings.

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