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Colorectal Cancer Surgery: What Happens During the Procedure and Recovery

Surgical Approaches

  • Open colectomy: midline incision; standard for complex/obstructed cases.
  • Laparoscopic: 3–5 small ports; less pain, faster recovery, equivalent oncologic outcomes.
  • Robotic-assisted: enhanced dexterity for pelvic dissection (low rectal cancer).
  • Transanal (TaTME, TAMIS): for select early rectal lesions.

Procedure Steps (Typical Laparoscopic Right/Left/Sigmoid Colectomy)

  1. General anesthesia; antibiotics, VTE prophylaxis.
  2. Port placement; diagnostic laparoscopy (assess resectability, metastases).
  3. Mobilization of colon; identification/preservation of ureters, gonadal vessels, nerves.
  4. Vascular ligation at origin (ileocolic, right colic, middle colic, IMA for left/sigmoid).
  5. Lymphadenectomy (D3 for complete mesocolic excision).
  6. Resection with adequate margins (≥5 cm proximal/distal).
  7. Anastomosis: stapled side-to-side (functional end-to-end) or hand-sewn.
  8. Anastomotic integrity test (air leak test).
  9. Diverting stoma (loop ileostomy) if low anastomosis, poor perfusion, malnutrition, neoadjuvant therapy.
  10. Specimen retrieval in bag; port closure.

Rectal Cancer Specifics

  • Total mesorectal excision (TME) principle.
  • Neoadjuvant chemoradiation or short-course RT for T3–4/N+.
  • Sphincter preservation (low anterior resection) vs abdominoperineal resection (APR) if sphincter involved/incompetent.
  • Diverting ileostomy common for low anastomosis (<6–8 cm from anal verge).

Intraoperative Considerations

  • Duration: 2–5 hours depending on complexity, BMI, adhesions.
  • Blood loss: typically 100–300 mL (laparoscopic).
  • Conversion to open: 5–15% (obesity, adhesions, bleeding, tumor adherence).

Immediate Postoperative Course

  • Recovery room → surgical floor or ICU (if high risk).
  • Enhanced Recovery After Surgery (ERAS) protocol: early feeding (clear liquids POD 0), early mobilization, multimodal analgesia (epidural, TAP block, scheduled acetaminophen/NSAID, minimal opioids), early catheter/NG removal.
  • Monitor: vitals, urine output, drain output, anastomotic leak signs (pain, fever, leukocytosis, peritonitis).
  • Typical discharge: POD 3–5 (laparoscopic), 5–7 (open).

Stoma Care (If Applicable)

  • WOCN (ostomy nurse) teaching pre-op and post-op.
  • Appliance fitting, skin care, output monitoring, dehydration prevention.
  • Reversal typically 8–12 weeks after adjuvant therapy completion.

Key Message

Modern colorectal surgery prioritizes oncologic radicality (R0, adequate lymph nodes), functional preservation (sphincter, autonomic nerves), and rapid recovery (ERAS). Discuss approach, stoma probability, and surgeon volume with your team.

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