Fig. 14. Plexiform neurofibroma in 14-year-old girl with known neurofibromatosis type 1 and palpable masses on upper arm.
US (A) shows conglomerated numerous serpiginous hypoechoic lesions at subcutaneous fat layer and muscle. Coronal T2-weighted MRI (B) shows conglomerated rounded hyperintense lesions with hypointense central foci known as “target sign” (arrows).