Unexpected pyomyositis of right buttock

A 11-year-old boy was admitted to the emergency department complaining of pain in the right hip, fever and had developed a noticeable limp sinds one week. He had fallen on his buttock in the swimming pool a few weeks before. Physical examination revealed pain at the mobilisation of the right hip, without limitation of movement. The laboratory data showed increased value CRP (154 mg/l) and leukocytosis at 11300 WBC/µl