This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cervical Carcinoma, Subject name: Gynaecology & Obstetrics
A woman undergoes radical hysterectomy for Stage Ib Cervical cancer. On hisptopathological examination, it is found that cancer extends to lower body of uterus. What is the next management? 
Select and explain. 
A. Chemotherapy, B. Radiotherapy, C. Repeat surgery for fuher disease reduction, D. Observation & follow up
D: Observation & follow up
Answer: D: Observation & follow up 
Explanation: In Ca Endometrium, the involvement of the cervix is stage II, But in Ca cervix, involvement of the uterus does not change the staging. It's considered natural progression of the cancer. Here since a radical surgery has already been done, the patient only requires observation and follow up