Article Text

Download PDFPDF
Unprovoked piriformis myositis presenting in a pregnant patient
  1. Bernard Kennedy1,
  2. Karim Botros2,
  3. Hibah Rashid1 and
  4. John Bermingham1,2
  1. 1Obstetrics & Gynaecology, University Hospital Waterford, Waterford, Ireland
  2. 2Obstetrics Gynaecology, HSE, Waterford City, Ireland
  1. Correspondence to Dr Bernard Kennedy; kennedybernard{at}


A patient in her mid-30s presented to hospital at 25 weeks’ gestation with acute onset of leg pain.

Routine investigations were performed to rule out the common causes of leg and back pain in pregnancy, which were grossly normal. Piriformis pyomyositis was diagnosed on MRI and a collection was drained. Following an initial response to antibiotic therapy, the patient delivered by elective caesarean section, but the pain returned on postnatal day 2 and muscle inflammation was diagnosed again, requiring a repeat course of antibiotics.

This case highlights a rare cause of leg pain in a pregnant patient, and the additional complexities of managing cases in the obstetric population.

  • Obstetrics and gynaecology
  • Radiology
  • Infectious diseases

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.


  • Contributors BK and KB authored and edited the case report. HR edited the case report. JB provided academic supervision and proofread the report.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.