Pyomyositis secondary to group A beta hemolytic streptococcus.

Pyomyositis is a primary bacterial infection of skeletal muscle not formed by local extension from superficial tissues. It is relatively frequently seen in tropical climates but reportedly rarely seen in temperate climates such as North America. In this report, we present a 67-year-old man with a primary Group A beta hemolytic Streptococcal infection of the quadriceps muscle of the left leg.