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August 1951


Author Affiliations

Dr. Meyerding is an emeritus member of the Section on Orthopedic Surgery, Mayo Clinic, and Drs. Bateman, Jackson, Golden, Scandalis, Sponsel, Tompkins, and Osterholm are Fellows in Orthopedic Surgery, Mayo Foundation.

AMA Arch Surg. 1951;63(2):247-266. doi:10.1001/archsurg.1951.01250040251015

LESIONS WHICH SIMULATE NEOPLASMS OF BONE  RIBEIRO,1 who had previously reported a case of epidermoid cyst of the phalanges in 1942, has found that reviews of the literature did not include all the cases which had been published. Counting those cases which had been omitted in previous series, the number of published cases of this condition is now 14. In his article Ribeiro reviews the many theories concerning the etiology of these cysts in bone and points out the various inconsistencies in each theory. He states that a wound severe enough to cause a fracture of the phalanx could produce a rupture of the tissue beneath the finger-nail even in the absence of an open skin wound. If the fragments of the fractured phalanx included a piece of such dermal tissue, growth of this would give origin to the epidermoid cyst. Such an explanation is satisfactory for three of

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