Localised pyogranulomatous dermatitis due to Mycobacterium abscessus in a cat: A case report

Abstract A case of pyogranulomatous dermatitis, caused by Mycobacterium abscessus , an unusual opportunistic Mycobacterium spp., is described in a cat. Histopathological examination of the affected skin confirmed the diagnosis and Ziehl-Neelsen staining revealed acid-fast rods. A rapidly growing mycobacterium was found after culture on a Lowenstein–Jensen medium. Real-time polymerase chain reaction for the 16S rDNA (434 bp) sequence and the sequence of the rpo B gene (359 bp) revealed 99% and 100% matches, respectively, with M. abscessus . This is the first report of a feline infection caused by this organism in Europe.