A case of plexiform neurofibroma involving the foot has been reported. The literature is replete with cases involving other areas of the body (5-7, 9, 12-16). The immediate clinical problem associated with a plexiform neurofibroma is dependent upon its location. This case displayed no apparent systemic involvement except café au lait spots near the mass. The anatomical disruption and course along the posterior tibial nerve were remarkable. A plexiform neurofibroma of the foot is best treated by surgical excision because of its possible malignant transformation, its progressive nature, and the somatic problems that may result from disruption of normal anatomy.