During Lichtenstein tension-free hernioplasty, the surgeon must identify the 'triangle of doom' to avoid catastrophic vascular injury. What structures form the boundaries of this triangle?

• A Ilioinguinal nerve medially, genitofemoral nerve laterally, inguinal ligament inferiorly
• B Vas deferens medially, testicular vessels laterally, peritoneal fold superiorly ✓
• C Inferior epigastric vessels medially, Cooper's ligament inferiorly, external iliac vessels laterally
• D Conjoined tendon superiorly, inguinal ligament inferiorly, inferior epigastric vessels medially

Explanation

The 'triangle of doom' is a laparoscopic anatomical danger zone bounded medially by the vas deferens, laterally by the testicular vessels (spermatic vessels), and superiorly by the peritoneal fold where these two structures converge — forming an inverted triangle. Within this triangle lie the external iliac artery and vein. Inadvertent staple or tack placement here causes catastrophic vascular injury. The 'triangle of pain' (lateral to testicular vessels) contains the lateral femoral cutaneous, femoral, and genitofemoral nerves. These triangles are particularly relevant to TAPP and TEP repairs.

Reference: Bailey & Love's Short Practice of Surgery, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.