{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T21:24:07Z","timestamp":1792185847137,"version":"4.4.0"},"reference-count":31,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2006,7,10]],"date-time":"2006-07-10T00:00:00Z","timestamp":1152489600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical Endocrinology"],"published-print":{"date-parts":[[2006,9]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p><jats:bold>Objective\u2002<\/jats:bold> To evaluate the influence of ovarian stroma on basal and poststimulus androgen secretion in patients affected by secondary amenorrhoea and polycystic ovaries (PCO) at ultrasound (US).<\/jats:p><jats:p><jats:bold>Design\u2002<\/jats:bold> Prospective study.<\/jats:p><jats:p><jats:bold>Patients\u2002<\/jats:bold> Fifty\u2010one patients with PCO selected from a group of 72 normal weight women aged 20\u201325\u00a0years affected by secondary amenorrhoea and 10 normal ovulatory controls.<\/jats:p><jats:p><jats:bold>Methods\u2002<\/jats:bold> All subjects underwent US to evaluate volume, area, stromal area and stromal\/total area ratio of both ovaries. Plasma levels of gonadotrophins, oestradiol (E2) and androgens were measured before and 24\u00a0h after GnRH\u2010a injection. 60\u00a0min after stimulus LH and FSH were also assayed.<\/jats:p><jats:p><jats:bold>Results\u2002<\/jats:bold> Thirty patients had increased ovarian stroma (IS) and 21 patients normal ovarian stroma (NS). Significantly higher LH levels characterized the IS group, both basally and after GnRH\u2010a stimulation compared with NS and controls (<jats:italic>P\u00a0&lt;<\/jats:italic>\u00a00\u00b701). Baseline levels of androstenedione, testosterone and 17\u2010OHprogesterone (17\u2010OHP) were significantly higher in IS group. Moreover, 17\u2010OHP hyper\u2010response to GnRH\u2010a was demonstrated in IS group in comparison to NS and control groups (<jats:italic>P\u00a0&lt;<\/jats:italic>\u00a00\u00b7005).<\/jats:p><jats:p><jats:bold>Conclusions\u2002<\/jats:bold> Stroma evaluation may be of use in discriminating between different pathogenic factors in secondary amenorrhoea. This criterion may be applied to support the correct diagnosis of polycystic ovary syndrome (PCOS). Indeed, in line with the most recently proposed guidelines, patients affected by multifollicular ovaries could be classified as PCOS. The possibility of taking into account more than one US criterion or of carefully reanalysing the significance of increased stroma volume should be considered.<\/jats:p>","DOI":"10.1111\/j.1365-2265.2006.02611.x","type":"journal-article","created":{"date-parts":[[2006,7,10]],"date-time":"2006-07-10T18:00:29Z","timestamp":1152554429000},"page":"396-401","source":"Crossref","is-referenced-by-count":15,"title":["Pituitary\u2013ovarian response to the gonadotrophin\u2010releasing hormone\u2010agonist test in anovulatory patients with polycystic ovary syndrome: predictive role of ovarian stroma"],"prefix":"10.1111","volume":"65","author":[{"given":"A. 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