Imperforate hymen is the most frequent cause of haematocolpos, although it is a rare malformation (1:2000). We present two cases of young girls with cyclic abdominal pain and urinary symptoms. At gynaecological examination, they all presented imperforate hymen and ultrasound revealed significant vaginal distension. X-shaped hymenectomy was performed in all patients. The later the diagnosis of imperforate hymen, the higher the risk of complications like haematometra, haematosalpinx, haemoperitoneum and infections such as tubo-ovarian abscesses, peritonitis and endometriosis (retrograde menstruation theory).
Keywords: congenital disorders; obstetrics, gynaecology and fertility.
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