A 65-year-old man was admitted to the gastroenterology clinic for endoscopic evaluation. Flexible rectosigmoidoscopy reveals a large mass in the middle part of the rectum extending up to the rectosigmoid junction. The patient was sent for surgical resection of the colon, which reveals a metastasis in the pararectal lymph nodes. Which of the following lymph node groups should be biopsied for the assessment of metastasis?

Question

Quizplus · Accepted Answer

Eductional Objective: Colonic areas above the pectinate line drain into the inferior mesenteric lymph nodes and the internal iliac lymph nodes, while areas below drain into the superficial inguinal lymph nodes.

A 65-Year-Old Man Was Admitted to the Gastroenterology Clinic for Endoscopic