Question
All of the following are true about the most common tumour of the gland shown in the picture below except ?
A. Most common tumor of salivary glands.
B. Has a tendency to invade perineural space.
C. Most commoly involves the parotid gland.
D. It is also called a mixed tumor.
Show Answer
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Correct Answer » B
Explanation
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The gland shown in the picture above represents Parotid gland.
Most common tumour of the parotid gland is Pleomorphic adenoma.
Pleomorphic adenoma
- This is the Commonest neoplasm of Salivary glands.
- The most Common salivary gland involved is Parotid – represent about 60% tumors in the parotid. o Submandibular and minor salivary glands may also be involved rarely.
- Pleomorphic adenoma → Parotid > Submandibular > minor salivary glands.
- They are derived from a mixture of ductal (epithelial ) and myoepithelial cells and therefore they show both epithelial and mesenchymal differentiation – Also called mixed tumor.
