Reason: please evaluate the margins of the plexiform neurofibroma of her foot History: plexiform neurofibroma of toes and dorsum that has grown. Markers were placed along the forefoot dorsal to the middle phalanx of the second toe and dorsal to the neck of the second metatarsal. Between the the markers, within the dorsal soft tissues, there is a poorly marginated heterogeneous mass with signal intensity similar to skeletal muscle and fat on T1 weighted images and predominantly high signal intensity on T2 weighted images. The mass abuts the underlying metatarsal, proximal phalanx, and middle phalanx. The inferior aspect of the mass extends inferiorly between the heads of the second and third metatarsals, but the plantar soft tissues are unaffected. The mass measures approximately 3 x 2 cm in greatest transverse dimension and approximately 7 cm in longitudinal dimension. The extensor tendon of the second toe is not well visualized along/within the mass. The underlying proximal and middle phalanges appear ankylosed as seen on prior radiographs. We see no signal abnormality within the bones. We see no additional masses within the forefoot.
Poorly marginated heterogeneous mass involving the dorsal aspect of the second toe as described above. The imaging characteristics are nonspecific; however this is compatible with a plexiform or unusual diffuse-type neurofibroma in a patient with a history of neurofibromatosis.