A 50-year-old man with carcinoma of the prostate presents with bony metastases. Which lymph node group is the PRIMARY site of lymphatic drainage from the prostate gland?

• A Superficial inguinal nodes
• B Obturator and internal iliac nodes ✓
• C Para-aortic nodes
• D Superior mesenteric nodes

Explanation

The prostate drains primarily to the obturator and internal iliac lymph nodes, with some drainage to presacral nodes. Superficial inguinal nodes (A) drain the perineum and lower limb, not the prostate. Para-aortic nodes (C) are second-echelon drainage. Superior mesenteric nodes (D) are midgut nodes and irrelevant here.

Reference: Gray's Anatomy, 42nd ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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