In a woman with cervical cancer, which lymph node group is considered the PRIMARY sentinel node?
- A Common iliac nodes
- B Obturator and external iliac nodes ✓
- C Para-aortic nodes
- D Inguinal nodes
Correct answer: B. Obturator and external iliac nodes
Explanation
The primary lymphatic drainage of the cervix follows the parametrial lymphatics to the obturator and external iliac nodes, which are the first-echelon (sentinel) lymph nodes in cervical carcinoma. These are the nodes at greatest risk for early nodal metastasis. Common iliac and para-aortic nodes represent secondary (higher echelon) drainage. Inguinal nodes drain the vulva, not the cervix.
Reference: Shaw's Textbook of Gynaecology, 17th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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