{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T17:45:08Z","timestamp":1773078308256,"version":"3.50.1"},"reference-count":23,"publisher":"BMJ","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BMJ Case Reports"],"published-print":{"date-parts":[[2009]]},"abstract":"<jats:p>A 16-year-old girl presented with primary amenorrhea and had had cyclical abdominal pain for almost a year. At examination we observed a painful mass in the lower abdomen and normal secondary sex characteristics. Perineal examination showed a bluish bulging hymen. Transabdominal ultrasonography revealed a dense mass in the pelvis measuring about 12\u00d711 cm. We diagnosed an imperforate hymen with haematocolpos and haematometra. The hymen was opened surgically and a large quantity of menstrual blood was drained from the vagina and uterus. Postoperative recovery was normal without any pain. The patient now menstruates regularly. An imperforate hymen occurs in 0.05% of women. It is important to be aware of this while examining a female adolescent presenting with cyclical abdominal pain and primary amenorrhea. Late discovery of an imperforate hymen may lead to pain, infections, hydronephrosis and endometriosis with subfertility as a possible consequence.<\/jats:p>","DOI":"10.1136\/bcr.08.2008.0722","type":"journal-article","created":{"date-parts":[[2009,5,27]],"date-time":"2009-05-27T03:08:19Z","timestamp":1243393699000},"page":"bcr0820080722","source":"Crossref","is-referenced-by-count":24,"title":["Imperforate hymen: a cause of abdominal pain in female adolescents"],"prefix":"10.1136","volume":"2009","author":[{"given":"C\u00e9line","family":"Lardenoije","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert","family":"Aardenburg","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Helen","family":"Mertens","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2009,5,26]]},"reference":[{"key":"2025042507580255000_2009.may26_1.bcr0820080722.1","doi-asserted-by":"publisher","DOI":"10.1093\/ije\/19.3.763"},{"key":"2025042507580255000_2009.may26_1.bcr0820080722.2","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2004-0183"},{"key":"2025042507580255000_2009.may26_1.bcr0820080722.3","first-page":"242","article-title":"Imperforate hymen: with and without hematocolpos. 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