A 6-month-old boy presented with right scrotal swelling since birth. It was soft and fluctuant with a positive transillumina-tion test. Gray-scale US showed a multicystic extratesticular, extraepididymal mass in the right hemiscrotum (arrow), with moving internal echoes (Fig. 1). The septae showed flow on color Doppler (Fig. 2). Findings were suspicious for scrotal lymphatic malformation, confirmed on surgery. Lymphatic malformations are congenital lymphatic hamartomas. Ninety percent occur before 2 years of age and 95% occur in the neck or axilla.
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