Spontaneous gas-forming bacterial myonecrosis caused by group B streptococci and peptostreptococci.

We present the case of a patient who spontaneously developed a severe gas-forming infection involving the voluntary muscles of both thighs. The organisms responsible were group B beta-haemolytic streptococci together with peptostreptococci. Following surgical and medical treatment, the patient fully recovered. No predisposing factors, in particular no disease causing immunocompromise, could be identified.