Calcinosis circumscripta following an injection of proligestone in a Burmese cat.
A 9-month-old speyed Burmese cat was presented with a cutaneous lesion in the dorsal thoracolumbar region. The lesion was characterised by alopecia and whitish deposits within the subcutis and had occurred at the site of a previous progestogen injection (Covinan; Intervet). Excisional biopsy confirmed the diagnosis of calcinosis circumscripta. Recovery of the cat following surgical excision was excellent, with no recurrence of the lesion detected 12 months later. The classification of tissue calcification and the proposed aetiology of calcinosis circumscripta is reviewed. It is concluded that further work is required to determine any link between subcutaneous injections, especially of progestogens, and calcinosis circumscripta.
O'Brien
C R
CR
Sandringham Veterinary Hospital, 262 Bluff Road, Sandringham, Victoria 3002.
Wilkie
J S
JS
D000818:Animals; D002114:Calcinosis / Q000139:chemically induced / Q000175:diagnosis / Q000662:veterinary*; D002371:Cat Diseases / Q000139:chemically induced* / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D002415:Cats; D003937:Diagnosis, Differential; D004971:Estrus; D008297:Male; D011374:Progesterone / Q000009:adverse effects* / Q000031:analogs & derivatives*; D045167:Progesterone Congeners / Q000009:adverse effects*; D012878:Skin Neoplasms / Q000139:chemically induced / Q000175:diagnosis / Q000662:veterinary*
D045167:Progesterone Congeners; D011374:Progesterone; C017677:proligestone