This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Most common tumour of eyelid is: September 2009 
Select and explain. 
A. Neurofibromatosis, B. Squamous cell carcinoma, C. Basal cell carcinoma, D. Rhabdomyosarcoma
C: Basal cell carcinoma
Answer: C: Basal cell carcinoma 
Explanation: Ans. C: Basal cell carcinoma Basal cell carcinoma is also known as BCC or rodent ulcer. It is the most common malignant tumour of the eyelids and commonly affects the lower lids. BCC typically affects adults of fair complexion who have had a lot of sun exposure, or repeated episodes of sunburn. BCCs arise in otherwise normal appearing skin, unlike squamous cell carcinomas (SCCs), which often arise within preexisting solar keratoses.