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
Primary group of Lymph nodes affected in cervical carcinoma: 
Select and explain. 
A. Common iliac group, B. Inguinal nodes, C. Obturator nodes, D. Para-aoic nodes
C: Obturator nodes
Answer: C: Obturator nodes 
Explanation: Cancer of cervix stas with Cervix and uterus which first goes to Obturator nodes - Internal iliac nodes. Major groups of lymph nodes draining the cervix are Obturator Internal iliac External iliac Common iliac Para aoic Cervix doesn't drain into Inguinal group of Lymph nodes.