Actinomyces odontolyticus as a rare cause of thoracoactinomycosis—A case report

Abstract

Actinomycosis, a bacterial infection in humans is most commonly caused by Actinomyces israelii. Less frequent causes include Actinomyces odontolyticus and Actinomyces viscosus. We present a rare case of thoracoactinomycosis caused by A. odontolyticus. It presented as a solitary pulmonary nodule, and formed neither draining sinuses nor granule formation, which is an unusual presentation. There are only nine cases of A. odontolyticus causing thoracoactinomycosis in the world literature, and this is the first such case reported from India.