Transverse T2 magnetic resonance imaging section through the hip region showing abscess collection in a patient with pyomyositis.
|Classification and external resources|
Pyomyositis, also known as tropical pyomyositis or myositis tropicans, is a bacterial infection of the skeletal muscles which results in a pus-filled abscess. Pyomyositis is most common in tropical areas but can also occur in temperate zones.
Pyomyositis is most often caused by the bacterium Staphylococcus aureus. The infection can affect any skeletal muscle, but most often infects the large muscle groups such as the quadriceps or gluteal muscles.
Pyomyositis is mainly a disease of children and was first described by Scriba in 1885. Most patients are aged 2 to 5 years, but infection may occur in any age group. Infection often follows minor trauma and is more common in the tropics, where it accounts for 4% of all hospital admissions. In temperate countries such as the US, pyomyositis was a rare condition (accounting for 1 in 3000 pediatric admissions), but has become more common since the appearance of the USA300 strain of MRSA.
- Chauhan S, Jain S, Varma S, Chauhan SS (2004). "Tropical pyomyositis (myositis tropicans): current perspective". Postgrad Med J 80 (943): 267–70. doi:10.1136/pgmj.2003.009274. PMC 1743005. PMID 15138315.
- Pannaraj PS, Hulten KG, Gonzalez BE, Mason EO Jr, Kaplan SL (2006). "Clin Infect Dis". Clinical Infectious Diseases 43 (8): 953–60. doi:10.1086/507637. PMID 16983604.
- Ovadia D, Ezra E, Ben-Sira L, et al. (2007). "Primary pyomyositis in children: a retrospective analysis of 11 cases". J Pediatr Orthop B 16 (2): 153–159. doi:10.1097/BPB.0b013e3280140548. PMID 17273045.
- Mitsionis GI, Manoudis GN, Lykissas MG, et al. (2009). "Pyomyositis in children: early diagnosis and treatment". J Pediatr Surg 44 (11): 2173–178. doi:10.1016/j.jpedsurg.2009.02.053. PMID 19944229.
- Small LN, Ross JJ (2005). "Tropical and temperate pyomyositis". Infect Dis Clin North Am 19 (4): 981–989. doi:10.1016/j.idc.2005.08.003.
- Taksande A, Vilhekar K, Gupta S (2009). "Primary pyomyositis in a child". Int J Infect Dis 13 (4): e149–e151. doi:10.1016/j.ijid.2008.08.013. PMID 19013093.