Chest wall actinomycosis in association with the use of an intra-uterine device.

A 31 year old woman presented with a chest wall abscess due to Actinomyces israellii and Porphyromonas asaccharolytica (previously Bacteroides asaccharolyticus). She was a long-term user of an intra-uterine device (IUD) and, although asymptomatic, had radiological evidence of pelvic infection. Actinomyces-like organisms were seen on cervico-vaginal smears. The abscess was surgically drained, the IUD removed, and a prolonged course of amoxycillin/clavulanic acid given.