Principles of Gynecologic Oncology Surgery

Principles of Gynecologic Oncology Surgery

Principles of Gynecologic Oncology Surgery

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Pre-Op & Staging - Setting the Stage

  • Initial Workup:
    • History, comprehensive physical exam (P/V, P/R).
    • Labs: CBC, KFT, LFT, Coagulation.
    • Tumor Markers: CA-125 (Ovary), CEA, AFP, $β-hCG$.
    • Performance status (ECOG/Karnofsky).
  • Imaging for Staging:
    • USG (transvaginal/abdominal): First-line.
    • CT (C/A/P): Metastasis, nodal status.
    • MRI Pelvis: Local invasion (cervix, endometrium).
    • PET-CT: Equivocal findings, recurrence.
  • Definitive Steps:
    • Biopsy: Histopathological diagnosis is mandatory.
    • Staging: Primarily FIGO (surgical), TNM.

      ⭐ Cervical cancer is clinically staged (FIGO), a key exception.

    • Counselling & informed consent.

Surgical Maxims - Scalpel Wisdom

  • Primary Goal: Achieve R0 resection (microscopically negative margins). Complete tumor removal is paramount.
  • Cytoreductive Surgery (Ovarian Cancer): Aim for optimal (<1 cm residual disease) or complete (no visible disease) cytoreduction.
    • Impacts prognosis significantly.
  • Surgical Staging: Precise pathological staging is crucial; dictates adjuvant therapy.
  • Minimize Morbidity: Balance radicality with quality of life; nerve-sparing techniques where feasible.
  • Multidisciplinary Approach: Collaboration with medical/radiation oncologists, pathologists.
  • Intraoperative Frozen Section: Guides surgical decisions, e.g., extent of lymphadenectomy, assessment of margins.
  • En-bloc Resection: Remove tumor with clear margins, minimizing tumor spillage.

⭐ In advanced epithelial ovarian cancer, achieving no gross residual disease (R0) after primary cytoreductive surgery offers the best survival advantage, superior to optimal cytoreduction (<1 cm).

Key Procedures & Tech - Tools of Trade

  • Key Surgical Procedures:
    • Hysterectomy: Total (TAH, TLH/LAVH), Radical (Wertheim's).
    • Salpingo-oophorectomy: Unilateral (USO) / Bilateral (BSO).
    • Lymphadenectomy: Pelvic (obturator, iliac), Para-aortic; Sentinel Node Biopsy (SLNB).
    • Cytoreductive Surgery (Debulking): Primary (PDS) or Interval (IDS). Aim for R0 (no visible disease).
    • Pelvic Exenteration: For select advanced/recurrent central pelvic disease.
  • Minimally Invasive Surgery (MIS):
    • Laparoscopy & Robotic-assisted surgery.
    • Benefits: ↓blood loss, ↓pain, ↓hospital stay, faster recovery.
  • Essential Tech:
    • Energy Devices: Ultrasonic (Harmonic), Advanced Bipolar (LigaSure).
    • Intraoperative Frozen Section: Guides surgical extent.
    • Intraoperative imaging (e.g., ultrasound for localization).

Robotic surgical system for gynecologic oncology

⭐ Optimal cytoreduction in advanced ovarian cancer (residual disease < 1 cm, ideally R0) significantly improves survival.

Post-Op & Palliation - Aftercare & Alternatives

  • Post-Operative Care:
    • Early ambulation, DVT prophylaxis (LMWH, compression stockings).
    • Pain management: Multimodal approach.
    • Wound care; monitor drains for output & early removal.
    • Monitor for complications: SSI, VTE, ileus, hemorrhage.
  • Palliative Interventions (Advanced/Recurrent Disease):
    • Goal: Symptom control, improve Quality of Life (QoL).
    • Palliative Surgery:
      • Relieve obstruction (e.g., bowel, ureteric).
      • Control bleeding or malignant discharge.
      • Symptomatic cytoreduction.
    • Non-Surgical: Palliative radiotherapy, chemotherapy, Best Supportive Care (BSC).

    ⭐ Secondary cytoreductive surgery in recurrent ovarian cancer is considered if platinum-sensitive, good performance status, and resectable disease, aiming for no residual disease.

High‑Yield Points - ⚡ Biggest Takeaways

  • Preoperative assessment is vital: evaluate comorbidities, nutrition, and disease extent.
  • Surgical staging is key for most gynecologic cancers, directing adjuvant treatment.
  • Optimal cytoreduction (residual disease < 1 cm, ideally none) improves survival in advanced ovarian cancer.
  • Radical hysterectomy with pelvic lymphadenectomy is standard for early cervical cancer.
  • Sentinel lymph node (SLN) biopsy reduces morbidity in endometrial and vulvar cancers.
  • ERAS protocols aim to ↓ complications and shorten hospital stays.

Practice Questions: Principles of Gynecologic Oncology Surgery

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Which of the following is NOT a favorable prognostic factor for ovarian cancer?

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Flashcards: Principles of Gynecologic Oncology Surgery

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Buzz word for HPV _____ cancer: post-coital bleeding

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Buzz word for HPV _____ cancer: post-coital bleeding

cervical

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