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: Ophthalmology
Recurrent chalazion in old age may indicate: March 2004 
Select and explain. 
A. Squamous cell carcinoma, B. Basal cell carcinoma, C. Adeno carcinoma of the meibomian gland, D. Sebaceous gland carcinoma
C: Adeno carcinoma of the meibomian gland
Answer: C: Adeno carcinoma of the meibomian gland 
Explanation: Ans. C i.e. Adenocarcinoma of the meibomian giana