{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T17:00:44Z","timestamp":1787245244252,"version":"build-2736575974"},"reference-count":50,"publisher":"Wiley","issue":"19","license":[{"start":{"date-parts":[[2021,9,15]],"date-time":"2021-09-15T00:00:00Z","timestamp":1631664000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cancer Medicine"],"published-print":{"date-parts":[[2021,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Women with endometrial cancer (EC) have favorable prognoses, leaving them vulnerable to the development of second primary cancers (SPCs). We investigated the SPC risk and survival outcomes among EC patients treated with surgery alone in order to exclude the impact of adjuvant treatment on the results.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Data from the Taiwan Cancer Registry from 1995 to 2013 were analyzed. Standardized incidence ratios (SIRs) of SPCs among EC survivors were calculated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Among 7725 women enrolled, 478 developed an SPC. The overall SIR for SPCs in EC survivors was 2.84 (95% confidence interval [CI] 2.59\u20133.10) compared with the general female population. Women diagnosed with EC at age &lt;50\u00a0years had a higher SIR for an SPC than those diagnosed at age \u226550\u00a0years (SIR\u00a0=\u00a04.38 vs. 1.28). The most frequent site of an SPC was the small intestine (SIR\u00a0=\u00a08.39, 95% CI 2.72\u201319.58), followed by the kidney (SIR\u00a0=\u00a04.84, 95% CI 1.78\u201310.54), and oral cavity (SIR\u00a0=\u00a04.52, 95% CI 2.17\u20138.31). Women, regardless of age at EC diagnosis, had significantly higher SIRs for subsequent breast, colorectal, lung, and thyroid cancer, and lymphoma. Women with an SPC had shorter overall survival than those without (5\u2010year: 88.9 vs. 94.2%, 10\u2010year: 71.3 vs. 89.8%, 15\u2010year: 62.3 vs. 86.1%, and 20\u2010year: 47.6 vs. 81.1%, all ps&lt;0.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Even women treated for EC with surgery alone, especially young EC survivors, had an increased risk of SPCs. Genetic counseling\/testing is recommended for young EC patients, and all are recommended to receive regular surveillance and screening for breast, colorectal, and lung cancers.<\/jats:p><\/jats:sec>","DOI":"10.1002\/cam4.3861","type":"journal-article","created":{"date-parts":[[2021,9,15]],"date-time":"2021-09-15T10:56:11Z","timestamp":1631703371000},"page":"6845-6854","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Increased risk of second primary malignancies among endometrial cancer survivors receiving surgery alone: A population\u2010based analysis"],"prefix":"10.1002","volume":"10","author":[{"given":"Yen\u2010Ling","family":"Lai","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology National Taiwan University Taipei Taiwan"},{"name":"Department of Obstetrics and Gynecology National Taiwan University Hospital Hsin\u2010Chu City 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