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
True about pagets disease of the nipple is? 
Select and explain. 
A. Always there is underlying carcinoma, B. Often bilateral eczema of nipple seen, C. Histology reveals giant cells, D. Highly malignant
A: Always there is underlying carcinoma
Answer: A: Always there is underlying carcinoma 
Explanation: Ans. is 'a" i.e. Always there is underlying carcinoma