Solitary malignant schwannoma of a digital proper nerve

Solitary Benign Schwannoma of the Foot Presenting Clinically as a Ganglion Cyst

“…1 Several cases have been reported in the literature with the excised schwannoma arising from the posterior tibial nerve causing tarsal tunnel syndrome, [2][3][4] from the medial plantar nerve, 5 and from a digital proper nerve. 6 Although almost all cases reported in the literature were small, solitary lesions, large, multiple plexiform schwannomas 7,8 and schwannomatosis, multiple lesions along a single nerve, 9 had also been reported in the plantar aspect of the foot. Although very rare, schwannoma had been reported with an intraosseous invasion in the foot, 10 and bilateral involvement on both feet in symmetrical locations.…”

“…Only a few instances have been reported in the literature where the schwannoma was noted as a raised, palpable, and visible soft-tissue mass on top of the digit. 6,12,13…”