This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Neoplasia), Subject name: Surgery
Which cancer develops in chronic ulcer - 
Select and explain. 
A. Malignant melanoma, B. Basal cell CA, C. Squamous cell CA, D. Kaposi sarcoma
C: Squamous cell CA
Answer: C: Squamous cell CA 
Explanation: Ans. is 'c' i.e., Squamous cell CA Squamous cell carcinomao Associated with chronic inflammation,o Invariably ulcerated lesion,o Metastasis in 2% cases.