An<unk>  is most often diagnosed in adolescent girls after the age of menarche with otherwise normal development. In adolescent girls of menarcheal age, the typical presentation of the condition is amennorhea and cyclic pelvic pain, indicative of hematocolpos secondary to vaginal obstruction. An<unk>  is usually visible on vaginal inspection as a bulging blue membrane. If hematocolpos is present, a mass is often palpable on abdominal or rectal examination. The diagnosis of an<unk>  is usually made based purely on the physical exam, although if necessary the diagnosis can be confirmed by transabdominal, transperineal or transrectal ultrasound. An<unk>  can also be diagnosed in newborn babies and it is occasionally detected on ultrasound scans of the foetus during pregnancy. In newborns the diagnosis is based on the findings of an abdominal or pelvic mass or a bulging<unk> . Examination of the normal neonatal vagina usually reveals a track of mucus at the posterior commissure of the labia majora; an absence of mucus may indicate an<unk>  or another vaginal obstruction. A similar condition, cribriform<unk> , is diagnosed when the<unk>  contains many minute openings.
Imperforate hymen
Cervical ectropion
Megarectum
Retroverted uterus
Sperm granuloma
Hydrocolpos
Bifid penis
Spermatocele