Question
The most common tumor of the minor salivary gland is –
| A. | Mucoepidermoid carcinoma |
| B. |
Acinic cell carcinoma |
| C. |
Adenoid cystic carcinoma |
| D. |
Pleomorphic adenocarcinoma |
Show Answer
|
Correct Answer » A Explanation |
 |
Minor salivary glands are distributed throughout the oral cavity, particularly in the:
- Hard palate (most common site)
- Soft palate
- Lips
- Buccal mucosa
- Floor of mouth
Unlike major salivary gland tumors, a significant proportion of minor salivary gland tumors are malignant.
Among the malignant tumors arising in minor salivary glands:
Mucoepidermoid carcinoma is the most common.
Why Option A is Correct
Mucoepidermoid Carcinoma
- Most common malignant salivary gland tumor.
- Most common malignant tumor of minor salivary glands.
- Composed of:
- Mucous cells
- Epidermoid (squamous) cells
- Intermediate cells
- Common site: palate.
Clinical features:
- Painless swelling
- May be bluish or fluctuant
- Can mimic a mucous retention cyst
Why Other Options are Incorrect
B. Acinic Cell Carcinoma
- Low-grade malignant salivary gland tumor.
- Most commonly arises in the parotid gland.
- Less common in minor salivary glands.
C. Adenoid Cystic Carcinoma
- Common malignant tumor of minor salivary glands.
- Characterized by:
- Perineural invasion
- Severe pain
- Local recurrence
- Usually considered the second most common malignant minor salivary gland tumor.
D. Pleomorphic Adenocarcinoma
- Uncommon malignant salivary gland neoplasm.
- Not the most common minor salivary gland tumor.