Gynecologic cancer staging procedures

Gynecologic cancer staging procedures

Gynecologic cancer staging procedures

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🧭 The Cancer Compass

  • Purpose: Staging determines prognosis and dictates the therapeutic plan (surgery, chemotherapy, radiation).
  • Method: Most gynecologic cancers use the FIGO surgical staging system, based on findings at laparotomy or laparoscopy.
    • Surgically Staged: Ovarian, Endometrial, Fallopian Tube, Vulvar, Vaginal.
  • Key Procedures: Total hysterectomy, bilateral salpingo-oophorectomy (BSO), lymphadenectomy, peritoneal washings, and biopsies.

Cervical cancer is the major exception, staged clinically (physical exam, biopsy, basic imaging). Surgical findings post-treatment do not alter the initial stage.

⚖️ Diagnosis - FIGO's Firm Rules

Staging for gynecologic malignancies primarily follows the FIGO system. The method-surgical versus clinical-is cancer-specific and dictates the diagnostic workup.

  • Surgically Staged (Pathology is King):

    • Cancers: Endometrial, Ovarian, Fallopian Tube, Peritoneal.
    • Procedure: Stage is determined by findings at surgical exploration (laparotomy/laparoscopy) and the final pathology report. Includes hysterectomy, oophorectomy, lymph node sampling, and peritoneal washings.
  • Clinically Staged (Exam is Key):

    • Cancers: Vaginal, Vulvar.
    • Procedure: Based on physical exam, biopsies, colposcopy, cystoscopy, proctoscopy, and imaging. The stage is set pre-treatment and is not altered by later surgical findings.

Cervical Cancer Shift: Traditionally clinical, the 2018 FIGO update for cervical cancer now incorporates findings from advanced imaging (MRI, PET/CT) and surgical pathology (if available) to assign the stage.

Endometrial Cancer Staging: Stages IA and IB

🔪 Gynecologic Cancer Staging Procedures

  • Goal: Comprehensive surgical exploration to pathologically define disease extent, which guides adjuvant therapy decisions. Essential for ovarian, endometrial, and fallopian tube cancers.
  • Staging Laparotomy/Laparoscopy: A systematic approach is critical for accuracy. The procedure is both diagnostic (staging) and often therapeutic (debulking/cytoreduction).
  • Key Components & Samples:
    • Cytology: Peritoneal fluid/washings are the first step after entry.
    • Biopsies: Multiple random and targeted biopsies of peritoneum, diaphragm, and any suspicious lesions.
    • Resection: TAH-BSO, omentectomy (standard for ovarian), and lymph node dissection.

Crucial Exception: Cervical cancer is staged clinically (physical exam, imaging, limited biopsy). Surgical findings (e.g., positive nodes) inform treatment but do not upstage the official FIGO stage.

⚠️ Complications - Procedural Pitfalls

  • Intraoperative Risks:
    • Hemorrhage
    • Damage to adjacent structures: Ureter, bladder, bowel
    • ⚠️ Tumor Spillage: Can iatrogenically upstage ovarian cancer (e.g., Stage IA → IC).
  • Postoperative & Long-Term:
    • Lymphadenectomy-Specific:
      • Lymphedema (chronic, debilitating)
      • Lymphocele formation
      • Nerve injury (obturator, genitofemoral)
    • Infection, VTE, vaginal cuff dehiscence.

⭐ Chronic lower extremity lymphedema is a major long-term morbidity of pelvic/para-aortic lymphadenectomy, significantly impacting quality of life.

Lymphedema: Normal vs. Obstructed Lymphatic Flow

⚡ Biggest Takeaways

  • Cervical cancer is uniquely staged clinically (physical exam, biopsy, colposcopy); advanced imaging (CT/PET) is for treatment planning, not official staging.
  • Ovarian and endometrial cancers are staged surgically, requiring comprehensive exploration.
  • Surgical staging includes total hysterectomy with bilateral salpingo-oophorectomy (TAH-BSO), peritoneal washings, omentectomy, and lymph node sampling.
  • Sentinel lymph node (SLN) biopsy is an alternative for early-stage endometrial and vulvar cancers.
  • CA-125 monitors ovarian cancer response, but is not used for staging.

Practice Questions: Gynecologic cancer staging procedures

Test your understanding with these related questions

A 33-year-old woman comes to the emergency department because of a 1-hour history of severe pelvic pain and nausea. She was diagnosed with a follicular cyst in the left ovary 3 months ago. The cyst was found incidentally during a fertility evaluation. A pelvic ultrasound with Doppler flow shows an enlarged, edematous left ovary with no blood flow. Laparoscopic evaluation shows necrosis of the left ovary, and a left oophorectomy is performed. During the procedure, blunt dissection of the left infundibulopelvic ligament is performed. Which of the following structures is most at risk of injury during this step of the surgery?

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Flashcards: Gynecologic cancer staging procedures

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The _____ ligaments are clamped and divided to enter the peritoneum of the broad ligament during a hysterectomy

TAP TO REVEAL ANSWER

The _____ ligaments are clamped and divided to enter the peritoneum of the broad ligament during a hysterectomy

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