psoas muscle abscess

Psoas muscle

abscess • Iliopsoas abscess - Ganzer Fall bei Radiopaedia

Hosn, S. Iliopsoas abscess. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-21394 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Tuberculosis with psoas abscess - Ganzer Fall bei Radiopaedia

Jones, J. Tuberculosis with psoas abscess. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-6408 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Iliopsoas abscess from Crohn disease - Ganzer Fall bei Radiopaedia

Haouimi, A. Iliopsoas abscess from Crohn disease. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-88891 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Psoas abscess - Ganzer Fall bei Radiopaedia

Patel, M. Psoas abscess. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-19128 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Spondylodiscitis with large psoas abscess - Ganzer Fall bei Radiopaedia

Shah, V. Spondylodiscitis with large psoas abscess. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-20774 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Psoas abscess secondary to pyonephrosis - Ganzer Fall bei Radiopaedia

Abdrabou, A. Psoas abscess secondary to pyonephrosis. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-22776 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Postoperative psoas collection - Ganzer Fall bei Radiopaedia

Niknejad, M. Postoperative psoas collection. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-23171 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Renal abscess and desmoid tumor - Ganzer Fall bei Radiopaedia

Abdrabou, A. Renal abscess and desmoid tumor. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-24328 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Psoas muscle abscess - Ganzer Fall bei Radiopaedia

Di Muzio, B. Psoas muscle abscess. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-28933 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Psoas muscle abscess and sacroiliac joint osteomyelitis - Ganzer Fall bei Radiopaedia

Ramesh, R. Psoas muscle abscess and sacroiliac joint osteomyelitis. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-34252 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Psoas abscess - Ganzer Fall bei Radiopaedia

Goel, A. Psoas abscess. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-34463 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Psoas abscess secondary to spondylodiscitis - Ganzer Fall bei Radiopaedia

Babu, V. Psoas abscess secondary to spondylodiscitis. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-60897 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Psoas muscle abscess - Ganzer Fall bei Radiopaedia

Mahmud, A. Psoas muscle abscess. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-75537 • CC by-nc-sa 3.0 (modified)

Septic

arthritis • Sacroiliac joint and psoas abscess - Ganzer Fall bei Radiopaedia

Gaillard, F. Sacroiliac joint and psoas abscess. Case study, Radiopaedia.org. (accessed on 23 Oct 2022) https://doi.org/10.53347/rID-7650 • CC by-nc-sa 3.0 (modified)

Psoas muscle

abscess • Psoas abscess - Ganzer Fall bei Radiopaedia

Chan B, Psoas abscess. Case study, Radiopaedia.org (Accessed on 13 Jul 2024) https://doi.org/10.53347/rID-170781 • CC by-nc-sa 3.0 (modified)

Radiopaedia • CC-by-nc-sa 3.0 • de

Psoas muscle abscess and fluid collections are located in the retrofascial space, rather than in the retroperitoneal space, because the psoas muscles are located in the iliopsoas compartment posterior to the transversalis fascia, which is the posterior boundary of the retroperitoneum.

Clinical presentation

Psoas muscle abscess may present with fever, flank pain, abdominal pain or limp. Other symptoms are nausea, malaise and weight loss.

Pathology

Psoas muscle abscess may be classified as primary or secondary depending on the presence or absence of underlying disease.

Primary

Primary psoas muscle abscess occurs probably as a result of haematogenous spread of an infectious process from an occult source in the body. Primary psoas muscle abscess can occur in patients with:

diabetes mellitus
intravenous drug use
AIDS
renal failure
immunosuppression

Secondary

Spread of infection from gastrointestinal disease (e.g. appendicitis, diverticulitis, Crohn disease or perforated colon carcinoma) is the most common source of a secondary psoas muscle fluid collection.

Renal disease is the second most common source.

They may also occur as a result of a neighboring spondylodiskitis.

Radiographic features

CT/MRI

Cross-sectional imaging is the modality of choice for abscess detection in the psoas muscle. Extension from the psoas muscle into the iliacus muscle is a common sequela.

Ultrasonography

It is diagnostic in only 60% of cases of psoas abscess, compared with 80% to 100% for CT.

Treatment and prognosis

Appropriate antibiotics along with drainage of the abscess are the treatment of choice. This is often treated with image-guided percutaneous drainage, typically CT, due to the retroperitoneal location.