Postpartum iliopsoas pyomyositis due to community-acquired methicillin-resistant Staphylococcus aureus.
BACKGROUND
Community-acquired, methicillin-resistant Staphylococcus aureus (MRSA) infections are on the rise among patients without risk factors for resistant microorganisms. A new, serious community-acquired MRSA manifestation, postpartum iliopsoas pyomyositis is described.


METHODS
A 24-year-old Hispanic female presented with back pain 9 days after a normal vaginal delivery. Magnetic resonance imaging showed extensive ill-defined edema of the left iliopsoas. Blood cultures yielded community-acquired MRSA. The patient received intravenous vancomycin for 6 days, followed by intravenous, then oral, trimethoprim-sulfamethoxazole. She was discharged on day 8 and made a full recovery.


CONCLUSIONS
Iliopsoas pyomyositis is a new manifestation of community-acquired MRSA in the obstetric population that may masquerade as benign musculoskeletal back pain. Obstetricians must be alert to the range of presentations of this emerging pathogen.
Sokolov
Karen M
KM
Department of Radiation Oncology, University of California Los Angeles, CA, USA.
Kreye
Eva
E
Miller
Loren G
LG
Choi
Chester
C
Tang
Angela W
AW
D000328:Adult; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D017714:Community-Acquired Infections / Q000188:drug therapy / Q000382:microbiology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D016106:Methicillin Resistance; D049590:Postpartum Period; D016659:Psoas Abscess / Q000188:drug therapy* / Q000382:microbiology; D052880:Pyomyositis / Q000188:drug therapy* / Q000382:microbiology; D013203:Staphylococcal Infections / Q000188:drug therapy* / Q000382:microbiology; D013211:Staphylococcus aureus / Q000187:drug effects* / Q000302:isolation & purification; D013420:Sulfamethoxazole / Q000627:therapeutic use; D016896:Treatment Outcome; D014295:Trimethoprim / Q000627:therapeutic use; D014640:Vancomycin / Q000627:therapeutic use
D000900:Anti-Bacterial Agents; D014640:Vancomycin; D014295:Trimethoprim; D013420:Sulfamethoxazole