Leporod granuloma in the dog often presents as ulcverated and eroded nodules on one or both ears. It is caused by some species of Mycobacteria and may be spread by insect bites. The Mycobacteria are difficult to grow and PCR is sometimes useful. Histopatology of a biopsy is used for confirmation but sometimes the organisms are hard to find on acid fast stains
A few cases undergo spontaneous resolution but most need systemic combination treatment and topical silver sulphadiazine. Small residula lesions can be surgically resected
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