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Gender differences in clinicopathological features and prognosis of squamous cell carcinoma of the esophagus

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Abstract

Background

Esophageal squamous cell carcinoma (ESCC) is more frequent in male, and female ESCC patients have better prognosis and tend to diagnose at an earlier stage than male. Regarding these female advantages, gender differences of immunological reaction and sex hormone relations were investigated previously. However, the gender differences of clinicopathological features and prognostic factors of ESCC remain well unknown.

Methods

A total of consecutive 170 Japanese patients, including 28 females with ESCC who newly diagnosed and underwent esophagectomy between January 2004 and March 2013 in our institute, were examined. Clinicopathological features and p53 expression, a potent biomarker reflecting chemoresistance and prognosis, were compared. Prognostic factors were analyzed using a multivariate analysis.

Results

The rates of current drinking, flusher, smoking habits, and Brinkman index in female were lower than those in male (p < 0.001). Tumor location, tumor differentiation, T factor, N factor, clinical stage, and contents of initial treatment had no gender differences. Especially, in the population that received neoadjuvant chemotherapy, excellent pathological effectiveness (>Grade2) was seen much more in female significantly (36.1:66.7 %, p = 0.048). Immunohistostaining revealed positive rates of p53 expression were significantly high in male (50.4:30.5 %, p = 0.007). Postoperative complication occurred more frequently in male than female (52.8:28.6 %, p = 0.024). Estimated 5-year disease-specific survivals by Kaplan–Meier method were worse in male than female at rates of 46.2 and 76.7 %, respectively (p = 0.045). Multivariate analysis by Cox’s proportional hazards model showed that female gender (HR: 0.508, p = 0.023) and tumor depth (HR: 0.572, p = 0.018) were independent prognostic factors of ESCC after resection.

Conclusions

Female ESCC showed prefer prognosis to male ESCC. Low p53 imunohistochemical expression in the female ESCC patients might be related with higher sensitivity to neoadjuvant chemotherapy.

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Correspondence to Takeshi Nishino.

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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. Informed consent or substitute for it was obtained from all patients for being included in the study. If doubt exists whether the research was conducted in accordance with the Helsinki Declaration, the authors must explain the rationale for their approach, and demonstrate that the institutional review body explicitly approved the doubtful aspects of the study. Identifying information of patients of human subjects, including names, initials, addresses, admission dates, hospital numbers, or any other data that might identify patients should not be published in written descriptions, photographs, or pedigrees unless the information is essential for scientific purposes and the patient (or parent guardian) gives written informed consent for publication. If any identifying information about patients is included in the article, the following sentence should also be included: Additional informed consent was obtained from all patients for which identifying information is included in this article.

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Nishino, T., Yoshida, T., Inoue, S. et al. Gender differences in clinicopathological features and prognosis of squamous cell carcinoma of the esophagus. Esophagus 14, 122–130 (2017). https://doi.org/10.1007/s10388-016-0554-4

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