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Further workup ruled out pregnancy. Following radiotherapy, her metastatic disease progressed and her hCG level continued to rise. To the best of our knowledge, this is the first report of a GIST tumor overexpressing hCG.<\/jats:p>","DOI":"10.1002\/jso.26067","type":"journal-article","created":{"date-parts":[[2020,7,2]],"date-time":"2020-07-02T18:34:55Z","timestamp":1593714895000},"page":"809-812","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["False\u2010positive pregnancy test secondary to ectopic expression of human chorionic gonadotropin by a gastrointestinal stromal tumor"],"prefix":"10.1002","volume":"122","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9514-5189","authenticated-orcid":false,"given":"Neal","family":"Andruska","sequence":"first","affiliation":[{"name":"Department of Radiation Oncology Washington University School of Medicine  St. Louis Missouri"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lily","family":"Mahapatra","sequence":"additional","affiliation":[{"name":"Department of Pathology and 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