Question:easy
Commonest type of anal canal carcinoma is?
Commonest type of anal canal carcinoma is?
Show Hint
Match the tumour type to the squamous lining of the anal canal.
Updated On: Jun 24, 2026
- Squamous cell carcinoma
- Adenocarcinoma
- Adenoacanthoma
- Papillary type
Show Solution
The Correct Option is A
Solution and Explanation
Step 1: Histology of a tumour follows the epithelium from which it springs. The lower anal canal carries squamous mucosa.
Step 2: Consequently the dominant malignancy at this site is squamous cell carcinoma, which arises in that squamous lining.
Step 3: Basal cell carcinoma ranks second and malignant melanoma is another recognised but uncommon anal tumour.
Step 4: Adenocarcinoma is characteristic of the glandular colorectal mucosa rather than the anal canal, so it is the wrong choice here.
\[\boxed{\text{Squamous cell carcinoma}}\]
Step 2: Consequently the dominant malignancy at this site is squamous cell carcinoma, which arises in that squamous lining.
Step 3: Basal cell carcinoma ranks second and malignant melanoma is another recognised but uncommon anal tumour.
Step 4: Adenocarcinoma is characteristic of the glandular colorectal mucosa rather than the anal canal, so it is the wrong choice here.
\[\boxed{\text{Squamous cell carcinoma}}\]
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