This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Surgery
The "Van Nuys grading" is used for 
Select and explain. 
A. LCIS, B. DCIS, C. Medullary carcinoma breast, D. IDC
B: DCIS
Answer: B: DCIS 
Explanation: Ans. (b) DCIS(Ref: Sabistons Textbook of Surgery, 20th ed p-853)* DCIS prognosis is based on Van Nuy's Grading* Van Nuys Grading is used to decide whether RT can be avoided in selective cases after Lumpectomy* Van Nuys favorable cases for whom RT can be avoided are - Low and Intermediate grade, DCIS <2.5cm size and Margin minimum 1cm after excision