Abstract
Imperforate hymen (IH) is an uncommon congenital anomaly of the female genital tract, with the hymen completely obstructing the vaginal opening. Despite the simple diagnosis and treatment of IH, missed or delayed diagnosis is often a clinical problem owing to its low incidence, nonspecific symptoms, or insufficient physical examination. The aim of this study is to identify the characteristics, clinical presentations, treatment modalities, and outcomes of imperforate hymen patients. In this study, a literature search of PubMed databases was performed for sources published up to 3 July 2018 for English-language studies with the term “imperforate hymen”. The literature review identified 251 citations and 155 articles (143 case reports, 12 case series) containing 253 patients who were finally included (two papers were not written in English). Among 236 postnatal patients, the mean age of the patients was 10.7 ± 4.7 years. Abdominal pain (54.2%), urinary retention (20.3%), abnormal menstruation (14.0%), dysuria (9.7%), increased urinary frequency (5.1%), severe presentation of renal failure (n = 5, 2.1%), and urinary tract infection (n = 1, 0.4%) were presented. Most patients diagnosed with the condition underwent surgical treatment (83.5%), most of whom were treated via a hymenotomy (35.2%) and hymenectomy (36.4%), and the use of prophylactic antibiotics were only used in 7 patients. There were no differences in outcomes between two surgical methods. In addition, 141 (59.7%) patients showed improvement and 5 deceased patients were not related to IH or the operation itself; Complications, such as vaginal adhesion, were only noted in 6.6% of patients. In addition, among 17 cases of newborns with a diagnosis of IH before birth, hymenectomy (n = 5, 29.4%) and hymenotomy (n = 9, 52.9%) were the main treatment modalities and showed improved prognosis in 52.9% of newborns. Because IH diagnosis is easy and postsurgical prognosis is good, clinicians should carefully examine every female patient at birth. IH should be considered regarding adolescent girls with abdominal pain, lower back pain, or urinary retention, and perform appropriate physical examinations of the genital introitus. In addition, accurate diagnosis as IH, not misdiagnosing as vaginal septum or agenesis, is important to prevent severe complications such as stricture and ascending infection.
Highlights
Imperforate hymen (IH) is an uncommon congenital anomaly of the female genital tract, in which the hymen completely obstructs the vaginal opening, with an approximate incidence of 0.05–0.1% [1,2].IH obstructs uterine and vaginal secretions, causing amenorrhea and cyclic pelvic pain [2]
IH is often diagnosed in adolescent girls after menarche, mainly presenting with amenorrhea and lower abdominal pain or urinary retention [6]
We have presented the data extracted from each case report or case series in Supplementary Tables S2 name, year of publication, country, study design, age of patients
Summary
Imperforate hymen (IH) is an uncommon congenital anomaly of the female genital tract, in which the hymen completely obstructs the vaginal opening, with an approximate incidence of 0.05–0.1% [1,2]. IH obstructs uterine and vaginal secretions ( called hematocolpos), causing amenorrhea and cyclic pelvic pain [2]. There have been rare cases of familial IH occurrence; most cases are thought to occur sporadically and no genetic mutations have been identified [5]. IH is often diagnosed in adolescent girls after menarche, mainly presenting with amenorrhea and lower abdominal pain or urinary retention [6]. Most young girls with IH are asymptomatic and diagnosed incidentally until menarche. Especially in newborns, the fetus’ secretion by maternal estrogen may cause hydrocolpos and hydrometrocolpos, presenting as abdominal mass in
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