Abstract
Ultrasonographic descriptions of Warthin's tumor (WT) vary from a predominately macrocystic appearance (anechoic with internal septations) to microcystic (multiple, diffuse, 1-2 mm anechoic areas). While the current first-line treatment for WTs is surgical excision, ultrasound-guided ethanol sclerotherapy (UGES) demonstrates success in macrocystic WTs, with aspiration of the cystic contents followed by injection of the sclerosing agent. Typically, microcystic tumors are thought to be unresponsive to sclerotherapy. In this case, we report the first application of ethanol sclerotherapy without ultrasound-guided aspiration for the treatment of a microcystic WT. The patient presented with a 2.0 cm × 1.97 cm × 3.05 cm right parotid mass of 9 years' duration. UGES was performed in clinic under local anesthesia through injection of 97% ethanol in the three separate components of the target lesion. Six months postprocedure, ultrasound evaluation demonstrated a volume reduction rate of 78.53%. The patient reported significant cosmetic improvement and no observed complications.