자궁내막암에서 CD44v6의 발현과 임상병리학적예후인자와의 상관성
Relationship between CD44v6 Expression and Clinicopathologic Parametersin Endometrial Carcinomas
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목적 : 병리조직검사로 확진된 자궁내막암 환자에서 CD44v6의 임상적 유용성을 알아보고자 본 연구를 시행하였다. 연구 방법 : 전자궁적출술과 양측 자궁부속기 절제술이 시행된 39예의 자궁내막암환자를 대상으로 의무기록지 검토와 면역조직화학 염색을 통한 후향적 연구를 하였다. 결과 : CD44v6 발현은 자궁내막암이 자궁근층 침범 없이 자궁내막에 국한된 침범을 나타낸 경우에 통계학적으로 유의한 차이로 발현되었고, CD44v6 발현된 경우 유의한 차이로 림프절 전이와 림프혈관 침범의 증거가 없었다. CD44v6 발현은 모두 자궁내막암의 I기에서만 있어 병기와의 유의한 관련성을 보였다. 또한 estrogen 수용체와의 통계학적인 연관성을 나타내어 좋은 예후인자로서의 CD44v6의 임상적 유용성을 시사하였다. 결론 : CD44v6의 발현은 자궁근층의 침범정도, 림프절 전이유무, 림프혈관 침범유무, FIGO 병기 정도, estrogen 수용체 발현 등과 밀접한 관련성이 있었으며, 양호한 예후를 예측할 수 있는 인자가 될 수 있음을 보여주고 있다. CD44v6의 발현유무가 환자의 예후를 예측하는데 유용하게 사용되기 위해서는 수술 전 자궁내막조직검사에서 진단된 자궁내막암 환자들을 대상으로 더 많은 연구가 있어야 하겠다.
Abstract
Objective : The purpose of this study was to evaluate the clinical usefulness of CD44v6 in patients with histologically confirmed endometrial cancer. Methods : Immunohistochemistry was used to determine the expression of CD44v6 in 39 hysterectomy specimens with the diagnosis of endometrial cancer. Results : CD44v6 expression was detected in 8 specimens with no myometrial invasion of endometrial cancer, one specimen with <50% myometrial invasion, and none with >50% myometrial invasion. There was a significant association between CD44v6 expression and no myometrial invasion of endometrial cancer. There was a statistically significant association between CD44v6 expression and lymph node metastasis, lymphovascular involvement. And all cases of CD44v6 expression were FIGO stage I with histological grade 1 or 2. CD44v6 expression was statistically related with estrogen receptor expression. Although statistical significance was not revealed, it was likely that CD44v6 expression was related with progesterone receptor expression with positive predictive value of 6/9 (66.7%). Conclusion : Significant relationships between myometrial invasion, lymph node metastasis, lymphovascular involvement, surgical stage and expression of estrogen receptor and CD44v6 expression suggest that CD44v6 expression could be a good prognostic factor. CD44v6 expression may have potential clinical usefulness if this expression is demonstrated in a further study with prehysterectomy sampling specimens containing endometrial cancer.
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