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For comparison, HCG levels were also determined in 21 breast cyst fluids using RIA method. In 66.7% of the breast cyst fluids examined the hormone levels were higher than normal serum values. Corresponding sera showed HCG to be within the range of normal levels. In 5 patients the multiple and \/ or bilateral cysts showed widely differing hormone levels. The importance of these observations is discussed.<\/jats:p>","DOI":"10.1177\/172460089000500306","type":"journal-article","created":{"date-parts":[[2018,4,16]],"date-time":"2018-04-16T10:41:00Z","timestamp":1523875260000},"page":"133-137","source":"Crossref","is-referenced-by-count":3,"title":["Levels of Human Chorionic Gonadotropin in Breast Cyst Fluid"],"prefix":"10.1177","volume":"5","author":[{"given":"R.","family":"Troccoli","sequence":"first","affiliation":[{"name":"Chair of Human Anatomy, University \u201cLa Sapienza\u201d, Roma - Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Battistelli","sequence":"additional","affiliation":[{"name":"Institute of Istology and Laboratory Analysis of University Urbino, Urbino (Ps) - Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"F.","family":"Marcheggiani","sequence":"additional","affiliation":[{"name":"Institute of Istology and Laboratory Analysis of University Urbino, Urbino (Ps) - Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Sessa","sequence":"additional","affiliation":[{"name":"Institute of Istology and Laboratory Analysis of University Urbino, Urbino (Ps) - Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Fronduti","sequence":"additional","affiliation":[{"name":"Institute of Istology and Laboratory Analysis of University Urbino, Urbino (Ps) - Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1990,7,1]]},"reference":[{"key":"bibr1-172460089000500306","unstructured":"HaagensenC.D. 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