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Sonographic detection of neonatal hydrometrocolpos

Department of Diagnostic Radiology, St Thomas' Hospital, London SE1 7EH, UK

This excerpt was created in the absence of an abstract.

Hydrometrocolpos is the result of an obstruction of the genital tract by an intact hymen, a midplane transverse septum, cloacal anomalies or vaginal atresia. This obstruction allows an accumulation of secretions from the infant cervical mucous glands in the vagina and uterus stimulated by maternal oestrogen (Wilson et al, 1978; Nyberg, 1990).

The incidence is reported to be between one in 16 000 births (Westerhout et al, 1964) and one in 30 000 births (Hill & Hirsch, 1985). Although several cases of hydrometrocolpos have been reported in the world literature (Mahoney & Chamberlain, 1940; Spencer & Levy, 1962; Reed & Griscom, 1973), there are very few reports of the ultrasonographic appearances of this condition (Sailer, 1979; Sawhney et al, 1990).

We present two cases of hydrometrocolpos which showed classical ultrasound features and review the literature on the subject.

A 1-day-old white girl, the product of a normal pregnancy and delivery, presented with a fluctuating mass protruding from the vagina. Clinical examination revealed a palpable abdominal mass and a swollen labia. An ultrasound of the abdomen and pelvis was performed using a 5 MHz probe. A 6 cm x 4 cm cystic left adnexal mass was demonstrated with no posterior acoustic enhancement. The mass contained several internal echoes (Fig. 1). The bladder was not distended and therefore not seen, but both kidneys were normal. The vaginal membrane was incised and 150 ml of milky white fluid was expelled.

Key Words: Sonography • Neonate • Hydrometrocolpos

Received for publication March 22, 1991. Accepted for publication September 20, 1991.

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