References:
Fujisawa Y, Takahashi T, Kawachi Y, Otsuka F. Giant cell tumor of the distal phalanx of the foot. Eur J Dermatol . 2006 Mar-Apr;16(2):204-5.
Kiatisevi P, Thanakit V, Boonthathip M, et al. Giant cell tumor of the distal phalanx of the biphalangeal fifth toe: a case report and review of the literature. J Foot Ankle Surg . 2011 Sep-Oct;50(5):598-602.