Pyomyositis--an under-reported disease in temperate climates.

Two cases of pyomyositis were seen over a period of 2 weeks. Both patients were young local residents in whom large amounts of pus were found deep within skeletal muscles. The first case had an unusual presentation involving more than one muscle. The causative organism in the first case was Staphylococcus aureus. In the second case it was Streptococcus pyogenes.