Calcinosis circumscripta of the metacarpal pad in a dog.

Calcinosis circumscripta was found in the metacarpal pad of an otherwise healthy young German Shepherd Dog. The lesion caused progressive lameness. Incomplete surgical excision alleviated pain, while preserving a functional metacarpal pad. There were no clinical or laboratory data to indicate impaired renal function in this dog. Five months after surgery, the lameness had not returned. Footpad calcinosis circumscripta has been previously described in older dogs with renal insufficiency.