Piomiositis primaria por Staphylococcus aureus meticilino-resistente proveniente de la comunidad

primary pyomyositis is an acute or subacute bacterial infection of skeletal muscle characterized by the formation of intramuscular localized abscess without a previous adjoining or remote infection. although it is not frequent in our population, it is increasing because of community-acquired methicilin-resistant staphylococcus aureus (ca-mrsa) emergency. for an early diagnosis and to avoid secondary complications a high degree of clinical suspicion is required. we report a case of primary pyomyositis in a boy without an underlying condition or previous infection.