Non-Tropical Pyomyositis Caused by Methicillin-Resistant Staphylococcus aureus: An Unusual Cause of Bilateral Leg Pain

Primary Pyomyositis Mimicking Transient Synovitis of the Hip in a Child: A Case Report

“…It has been reported that S. aureus is the most common pathogen in PM. [4,7,18] This was the same microorganism isolated from the pus material of our patient. Because of his chronic abdominal pain, we investigated the colon regarding IBD, a probable cause of PM, but the colonoscopy results were normal.…”

“…either in single form or in multiple groups. [4,7,18] Our case presented with gluteal localization of PM, which is reported frequently in the involved area.…”

“…[17] Bacterial infection is rare in the skeletal muscle, which is usually resistant to infection. [7,8,18] It has been suggested that in order for PM to develop, some alterations in the usual defenses of the affected muscle are necessary. Trauma has been postulated to contribute to PM by facilitating hematogenous access to the muscle tissue and by providing an iron-enriched environment for bacterial growth through the release of myoglobin.…”

“…Trauma has been postulated to contribute to PM by facilitating hematogenous access to the muscle tissue and by providing an iron-enriched environment for bacterial growth through the release of myoglobin. [7,18] The source of the bacterial inoculum is believed to be either from distant skin infections with transient bacteriemia or, less commonly, from local vascular or lymphatic contamination. [4,7,18,19] Children seldom have preexisting conditions compared with adults.…”

“…[7,18] The source of the bacterial inoculum is believed to be either from distant skin infections with transient bacteriemia or, less commonly, from local vascular or lymphatic contamination. [4,7,18,19] Children seldom have preexisting conditions compared with adults. [2,10,16,20] In the paper by Unnikrishnan et al [17] only two of 13 pediatric patients with PM had any pre-existing medical problems (asthma, juvenile arthritis), and these were not directly linked to PM.…”