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Hydrocele of the canal of Nuck: ultrasound appearance.

Swelling in the inguinal region of a woman may result from a number of conditions, including inguinal hernia, tumor (lipoma, leiomyoma, sarcoma), cyst, abscess, adenopathy, or hydrocele of the canal of Nuck. It may be difficult to make a specific diagnosis based upon the history and physical examination alone. This report describes a symptomatic woman in whom ultrasound was helpful in diagnosing a hydrocele of the canal of Nuck, which is the female counterpart of a spermatic cord hydrocele in the male. The ultrasound findings are described.