Ascaris simulating hepatic hemangioma: the importance of an accurate ultrasound examination

The US features of ascaris in the biliary tract are well known. We report a case of a 22-year-old girl presenting a well defined, homogeneous, nonshadowing nodular image seen with a 3.5 MHz transducer. The importance of selecting better transducers to evaluate the lesion with 7.5 MHz transducer is shown. It is possible to define the lesion as a coiled-up worm.