Lymphatics from the testes drain primarily to which lymph node group, reflecting the gonadal embryological descent from the retroperitoneum?

• A Superficial inguinal lymph nodes
• B Deep inguinal lymph nodes (node of Cloquet)
• C External iliac lymph nodes
• D Para-aortic (lumbar) lymph nodes at the level of L1–L2 ✓

Explanation

Because the testes develop from the gonadal ridge at the level of the 2nd lumbar vertebra and descend into the scrotum along the posterior abdominal wall, their lymphatic drainage follows the gonadal vessels to the para-aortic (lumbar) lymph nodes at L1–L2. This is clinically critical: testicular germ cell tumors metastasize to retroperitoneal nodes, NOT to the inguinal nodes. Inguinal nodal metastasis would only occur if the scrotal skin is invaded (scrotal skin drains to superficial inguinal nodes) or after scrotal surgery disrupts lymphatics.

Reference: BD Chaurasia's Human Anatomy, 8th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.