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Psoas_Abscess:
Collection of pus within the Psoas muscle.
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Cause:
1 - Primary: hematogenous spread usually distant sources (Furnuculosis, Hideradenitis supprotica). In many cases the exact source are not identified.
#Example:
Diabetes mellitus.
Patients on immunosuppressive medications.
Frequent body piercing ( IV drug abusers).
HIV/AIDS.
2-Secondary: spread of an infection from and adjacent structures.
#Example:
GIT: most common ( IBD, Acute appendicitis, Divirticulitis).
Urological: pylonephritis and pyohydronephrosis.
Orthopedic and rheumatologic: Vertebral spondylitis and osteomyelitis.
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Diagnosis:
1-Fever
2- Risk factors: DM, IVDU, HIV/AIDS and use of immunosuppressive drugs.
3 - Flank pain.
4- Psoas sign: pain that increases with the extension of the hip and soothen with flexion.
5-Imaging: non contrast CT abdomen 80%-100% diagnostic.
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Managment:
1-Admission.
2- IV antibiotics.
3-image Guided derinage.
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Reference:
1)UWORLD Surgery.
2)https://Radiopedia.org psoas abcess.
