Debilitating Ossifying Fibromas of a White-Tailed Deer Associated With Ear Tagging

Abstract

A 2.3 kg partially ossified fibroma developed apparently within a 4-1/2 month period near a tag inserted in the right ear of a 5-1/2 year old white-tailed doe (Odecoileus virginianus). This growth caused an abnormal head carriage, disturbed feeding and resulted in emaciation. Secondary partially ossified fibromas developed at the left ear tag and in the right external acoustic meatus. The latter fibroma penterated the tympanic membrane. The puncture wounds in the ears associated with the aluminum tags probably provided sites for virus infection and subsequent fibromatosis.

Bilateral nonossifying fibromas in the proximal tibiae of a yearling Thoroughbred filly

“…The filly was noted from birth to have a very upright conformation to the hocks, and abnormal loading on this joint, associated with the conformation, may have predisposed to the development of the lesions in this horse. Ossifying fibromas have been reported in white-tailed deer secondary to ear tagging (Roscoe et al 1975). The lumbar kyphosis was not present at birth and may be secondary to chronic hindlimb pain.…”

Mandibular Ossifying Fibroma and Multiple Oral Papillomas in a Roe Deer (Capreolus capreolus)

“…Relatively unusual locations including the tibia (20,21) and os penis (22) have also been reported. Other infrequent locations include that of a white-tailed deer (Odecoileus virginianus) affected by a debilitating ossifying fibroma of the ear (23). The ear lesion was suggested to be associated with ear tagging and with a possible virus transmission occurring during the procedure.…”