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Table 1 Classification of IPA origin between gas-forming IPA and non-gas forming IPA patients

From: Features and treatment modality of iliopsoas abscess and its outcome: a 6-year hospital-based study

  Gas-forming IPA (n = 27) Non-gas forming IPA (n = 61 )
Origin (Primary:Secondary) 3:24 18:43
Skeletal 11 (40.7%) 26 (42.6%)
Vertebral osteomyelitis/spondylodiskitis 10 17
Ilio-sacral joint septic arthritis 0 7
Hip septic arthritis 1 2
Intra-abdominal 1 (3.7%) 4 (6.6%)
Necrotizing pancreatitis 0 2
Appendicitis 0 1
Colon cancer with abscess 1 0
Post GI procedure 0 1a
Cardiovascular 6 (22.2%) 5 (8.2%)
Abdominal aortic aneurysm post-stent implantation 2 2
Infected aortic aneurysm 2 0
Infective endocarditis 0 3
Catheter related 2 0
Urinary tract 5 (18.5%) 5 (8.2%)
Acute pyelonephritis 2b 2c
Post GU procedure 3d 2e
Prostate abscess 0 1
Post gynecologic procedure 0 1f (1.6%)
Empyema with downward extension 0 2 (3.3%)
Limb necrotizing fasciitis 1 (3.7%) 0
  1. aPost appendectomy and colocutaneous fistula repair.
  2. bIncluding 2 EPN.
  3. c Including 1 EPN.
  4. dIncluding 1 post nephrectomy, 1 post Bench surgery, and 1 renal stone post ESWL.
  5. eIncluding 2 post nephrectomy.
  6. fEndometrioid cancer post operation.
  7. EPN, emphysematous pyelonephritis; ESWL, extracorporeal shock wave lithotripsy; GI, gastrointestinal; GU, genitourinary.