Abdominal pain is a common occurrence in the adolescent demographic, encompassing a wide range of differential diagnoses. The etiology of abdominal pain can be categorized into gastrointestinal, urologic, and gynecologic causes. In the female pediatric population, acute urinary retention is an uncommon but noteworthy source of abdominal pain, typically resulting from an obstructive process. Hence, it is imperative to perform a comprehensive physical examination prior to deciding on the management approach. We present the case of a 11-year-old girl who visited the emergency department due to suprapubic discomfort and acute urinary retention. The patient had no significant medical or surgical history, and her neurological examinations were normal. Urinary catheterization drained 500 mL of urine. Abdominal ultrasonography revealed a hematocolpos compressing the urinary bladder. Further gynecologic history indicated that the patient had not yet experienced menarche. Consequently, a cruciate incision was performed, which resolved her urinary retention. This article aims to emphasize that although rare, imperforate hymen should be considered as a potential cause of acute urinary retention during adolescence. If an adolescent presents with abdominal pain and voiding difficulties, it is crucial to obtain a detailed gynecological history and conduct a thorough physical examination of the genital introitus.

Hematometrocolpos is an infrequent congenital anomaly (Mullerian duct anomaly) that results in an imperforate hymen, followed by accumulation of menstrual blood in the vagina and or uterus in prepubertal girls results in retrograde menstruation. This commonly manifests as abdominal pain in premenarcheal pubescent girls. We discuss the case of two adolescent girls who presented to the emergency with lower abdominal pain, constipation, back pain, and/or urinary retention. They were found to have an imperforate hymen and hematometrocolpos. The diagnosis was made with the use of a genital examination and ultrasound. Hymenotomy was performed successfully in both cases and the patients recovered completely without complications. Failure to diagnose premenstrual girls presenting with lower abdominal pain and/or retention of urine with hematometrocolpos might lead to complications like infertility, endometriosis, tubal infections, adhesions, etc.

Acute urinary retention is uncommon in pediatric age and is usually associated with infection or obstruction of the urinary tract. We present the case of a 12-year-old girl admitted to the emergency room with acute urinary retention and lower urinary tract symptoms. Physical examination revealed abdominal distension and a blue-bulging mass occupying the vaginal introitus. Ultrasound confirmed the diagnosis of hematocolpos and revealed hydronephrosis, caused by compression. Kidney function and urinalysis were normal. A hymen incision and excision of redundant tissue were performed without complications. Hematocolpos is a condition caused by obstructive uterovaginal deformity. Imperforate hymen is responsible for most of the cases and usually manifests as primary amenorrhea and cyclic lower abdominal pain. The diagnosis of hematocolpos can be challenging. However, it is important to consider it in female adolescents without menarche presenting with acute urinary retention.

BACKGROUND: Imperforate hymen is the most common congenital defect of the female urogenital tract. The spectrum of clinical manifestations is broad, ranging from mild cases undiagnosed until adolescence to severe cases of giant intraabdominal masses. The most common complication of hydrocolpos is bladder compression, resulting in obstructive uropathy and hydronephrosis.
METHODS: We present here the case of a preterm neonate who was admitted to the surgical neonatal intensive care unit for bowel obstruction. The baby did not appear septic or unwell, a small amount of meconium passed frequently, and no bilious gastric residuals occurred. Based on these findings, acute abdominal obstruction was doubtful, and the surgeon chose a conservative (watch and wait) approach. Subsequently, we performed abdominal ultrasound and magnetic resonance imaging based on unclear information about a suspicious abdominal mass raised by the gynecologist shortly before the emergency C-section. The final diagnosis was congenital hydrocolpos due to imperforate hymen. The pediatric gynecologist indicated an incision of the imperforate hymen under general anesthesia. The incision resolved abdominal distention as well as the bowel obstruction.
CONCLUSIONS: The presentation of hydrocolpos was not typical (no bulging in the vaginal introitus) in our case, and clinical symptoms implied acute bowel obstruction shortly after birth. The surgeon chose a conservative (watch and wait) approach as the baby did not appear unwell on the second day of life. Fortunately, diagnostic laparotomy was not required as the next step in bowel obstruction management. All clinical symptoms resolved after a minor surgical procedure.

OBJECTIVE: The goal of this review is to provide a comprehensive overview of hydrometrocolpos, covering disease etiology, pathophysiology, clinical presentation, and diagnostic and management techniques, and known outcomes.
RESULTS: This narrative review presents the literature on hydrometrocolpos in the pediatric population from the past 5 years. We highlight the 69 reported cases of hydrometrocolpos and classify them based on type of obstruction or associated anomaly, discuss new diagnostic algorithms based on imaging, and present novel and underutilized surgical techniques for definitive management. Hydrometrocolpos, a condition characterized by retained fluid causing a distended vagina and uterus in the setting of a distal vaginal outflow obstruction, has a wide range of presentation severity based on the type of obstruction. Whether hydrometrocolpos is due to an isolated condition like imperforate hymen, a complex abnormality like cloacal malformation, or a part of a large congenital syndrome, the mainstay of treatment is decompression of the dilated vagina and surgical correction of the outflow obstruction. Imaging-based diagnostic algorithms and new treatment techniques reported in the literature, as well as longitudinal and patient-reported outcome research, can improve the lives of children affected by this condition.

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An imperforate hymen is a rare malformation present at birth; however, in most cases, diagnosis is missed until adolescence, when hematocolpometra and its symptoms develop. At this stage, every further delay in diagnosis and treatment will negatively affect the quality of life of young females. It may also be one of the causes of endometriosis and its consequences, such as subfertility. Sonography of the pelvis and physical examination are the diagnostic modalities of choice for diagnosing hematocolpometra and imperforate hymen. We present a case of a 14-year-old patient admitted to the obstetrics and gynecology clinic with complaints of lower abdominal pain and urinary retention following dysuria. The patient was previously examined by a family doctor who misidentified the issue and treated it as a urinary infection. After the symptoms worsened, the patient was referred to a gynecologist. An ultrasound examination showed a distended vagina and uterus, suggesting hematocolpometra, and after further inspection, it was revealed to be caused by an imperforate hymen. A hymenectomy was performed, and about 900 mL of blood was drained. Symptoms and complaints ceased, and the patient was discharged the next day.

In a female neonate with anorectal malformation (ARM), the diagnosis is usually simple. But when there are two openings in the introitus and absent anal opening at the normal site, the scenario poses a diagnostic challenge. Careful and detailed evaluation of anomaly is therefore necessary before planning definitive correction. Imperforate hymen, although is not commonly associated with ARM should always be kept in mind as a differential diagnosis and other vaginal anomalies like Mayer-Rokitansky-Küster-Hauser syndrome should be ruled out before definitive surgical correction.

Neonatal hydrometrocolpos (HMC) is a cystic dilatation of a neonate\'s vagina and uterus occurring secondary to congenital vaginal obstruction, with or without maternal estrogenic stimulation of uterine and cervical glands causing increased secretions during the prenatal and postnatal period. Diagnosis is made using ultrasonography and further confirmed by MRI. HMC in a neonate can rarely present with congenital anomalies such as polydactyly, which may indicate a variety of underlying genetic syndromes. There is a deficit in the literature as to whether the development of HMC in a neonate of consanguineous parents is an isolated finding or solely related to an underlying syndrome. We hope to help bridge this gap by reporting a case of a 12-day-old neonate presenting with hydrometrocolpos and polydactyly, born to consanguineous parents.

Vaginal agenesis is part of a group of anomalies, referred to as Mullerian anomalies due to their embryologic origin, in which there is a congenital absence of the vagina. We present a unique case in which a 20-year-old female presented to the Emergency Department with cyclical abdominal pain and primary amenorrhea. The original assessment showed a probable imperforate hymen; however, it was later found that she likely had vaginal agenesis. Vaginal agenesis is a rare disease, but it is prevalent enough that it should be kept at the forefront of the differential diagnosis in a woman with primary amenorrhea and recurring pain. We also highlight the importance of patient education in general, but categorically to sexual health.