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: Gynaecology & Obstetrics
The following are indications for postoperative radiotherapy in a case of carcinoma endometrium except: 
Select and explain. 
A. Myometrial invasion of more than half thickness, B. Positive lymph nodes, C. Endocervical involvement, D. Tumor positive for estrogen receptors
D: Tumor positive for estrogen receptors
Answer: D: Tumor positive for estrogen receptors 
Explanation: None