Abstract
A 14-year-old Japanese female with painful infiltrated erythema on her right lower leg was brought to our hospital on March 25, 2006. Histopathologically, granuloma was observed in the dermis. Acid fast bacillus was cultured from the pus and was proved to be Mycobacterium abscessus by DNA-DNA hyblidization technique. She was treated with oral Minocycline, but this agent could not be continued due to side effects. Thereafter, we performed surgical excision. We reviewed 20 cases previously reported in Japan.