Canal of Nuck Hernia in a Female Infant Containing Uterus, Bilateral Adnexa and Bowel

The canal of Nuck is a fold of peritoneum that invaginates into the inguinal canal and closes at or just before birth. If the canal of Nuck remains open in female infants, herniation of the uterus, adnexa and/or bowel loops may arise through the inguinal canal into the labia majora. The present case is a 12-week-old female infant with complaints of left groin swelling and discomfort. Ultrasonographic examination revealed a left inguinal hernia containing both adnexa (ovaries and fallopian tubes), uterus and small bowel loops with fluid. A hernia containing ovary and uterus should be considered as a possible cause in a female infant with a groin mass. Ultrasonography of the inguinal mass lesions should be performed routinely in a female infant for accurate diagnosis.