Clear Cell Carcinoma of the Ovary: A Study of 254 Patients
Author Information
Author(s): Takano M, Kikuchi Y, Yaegashi N, Kuzuya K, Ueki M, Tsuda H, Suzuki M, Kigawa J, Takeuchi S, Tsuda H, Moriya T, Sugiyama T
Primary Institution: National Defence Medical College
Hypothesis
What are the clinical characteristics and prognostic factors in patients with clear cell carcinoma of the ovary?
Conclusion
The study suggests that cytoreductive surgery resulting in no residual tumor can improve the prognosis of advanced clear cell carcinoma patients.
Supporting Evidence
- Five-year progression-free survival was 84% in stage I and 0% in stage IV.
- Positive peritoneal cytology was identified as an independent prognostic factor.
- Residual tumor diameter significantly affected progression-free survival in advanced stages.
Takeaway
This study looked at 254 women with a type of ovarian cancer called clear cell carcinoma and found that removing all the cancer during surgery can help them live longer.
Methodology
A retrospective analysis of medical records and pathological reviews from nine Japanese institutions over an 11-year period.
Potential Biases
Potential bias due to the retrospective nature and reliance on medical records.
Limitations
The study is limited by its retrospective design and the exclusion of patients who did not undergo complete surgical staging.
Participant Demographics
Mean age was 52.4 years, with a range from 23 to 73 years.
Statistical Information
P-Value
P=0.03 for peritoneal cytology; P=0.02 for residual tumor diameter in advanced stages.
Confidence Interval
95% CI, 1.14–10.18 for peritoneal cytology.
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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