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A 17-Year-Old Boy with Umbilical Discharge

	Answer 1 Patent urachus. There are 4 distinct types of urachal anomaly. In order of frequency, these are a patent urachus (50%), a urachal cyst (30%), an umbilical-urachal sinus (15%) and a vesicourachal diverticulum (3%-5%). A patent urachus almost always presents in the newborn, whereas urachal cysts are the predominant lesion in older children and adults. The umbilical granuloma does not represent a urachal anomaly but rather overabundant granulation tissue related to a healing umbilicus. Click here to return to the questions
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