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Surgery and postoperative radiotherapy versus surgery alone for patients with stage-1 endometrial carcinoma: multicentre randomised trial

Pubmed

Hypothesis:
Addition of external beam radiation after surgery in early stage endometrial cancer improves survival

Site:
Endometrium

Experimental arm:
Surgery followed by 46 Gy in 2 Gy daily fractions, 3 or 4 field technique (Fields: superior border at L5/S1)

Standard Arm:
Surgery alone

Eligibility Criteria

  • TAH/BSO without routine LND with these criteria
    Invasion Grade
    >50% (deep) 1
    any 2
    <50% superficial 3
  • WHO score of 0-2
  • Histologies allowed:
    • Endometrioid (also including adenocarcinoma with squamous features)
    • Adenocarcinoma not otherwise specified
    • Adenosquamous carcinoma
    • Papillary serous carcinoma
    • Clear-cell carcinoma

Primary Outcome:
Locoregional recurrence and overall survival

Results:

Outcome EBRT Observation p-value
Locoregional Recurrences 4% 14% SS
Overall Survival** 81% 84% NS
Major Toxicity 25% 6% SS
  • 73% recurrences in the vagina. Rate of distal mets same ~7% each arm
  • Prognostic Factors: Age >60, G3, IC predictive for LR; If 2 of 3 criteria, LR 23% vs. 4% (SS)

Conclusions:
Postoperative radiation improves locoregional control, but no survival benefit


See Radiation Oncology WikiBook for more details ↩︎

Author: Shitanshu Uppal

Assistant Professor Gynecologic Oncology University of Michigan, Ann Arbor

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