Psoas muscle abscess - Misplaced Pages

Accumulation of pus in the iliopsoas muscle compartment within the hip Medical condition

Psoas abscess

Paraspinal abscess in the psoas muscle
Specialty	Infectious diseases, surgery, gastroenterology

Psoas abscess is a collection of pus (abscess) in the iliopsoas muscle compartment. It can be classified into primary psoas abscess (caused by hematogenous or lymphatic spread of a pathogen) and secondary psoas abscess (resulting from contiguous spread from an adjacent infectious focus).

Psoas abscess may be caused by lumbar tuberculosis, vertebral osteomyelitis, and pyelonephritis. Patients with Crohn's disease, diabetes, or immunocompromised states are at a higher risk of developing a psoas abscess.

Symptoms include flank pain, fever, and an inguinal mass. A positive psoas sign should raise suspicion of psoas abscess as a possibility. Owing to the proximal attachments of the iliopsoas, such an abscess may drain inferiorly into the upper medial thigh and present as a swelling in the region. The sheath of the muscle arises from the lumbar vertebrae and the intervertebral discs between the vertebrae. The disc is more susceptible to infection, from tuberculosis and Salmonella discitis. The infection can spread into the psoas muscle sheath.

Treatment may involve drainage and antibiotics.

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References

"Psoas abscess". UpToDate. Retrieved 2023-08-08.
^ "Psoas abscess - Knowledge @ AMBOSS". www.amboss.com. Retrieved 2023-08-08.
Drake, Richard (2012). Gray's basic anatomy, with STUDENT CONSULT. Philadelphia: Elsevier/Churchill Livingstone. ISBN 9781455710782.
Melissas J, Romanos J, de Bree E, Schoretsanitis G, Askoxylakis J, Tsiftsis DD (April 2002). "Primary psoas abscess. Report of three cases". Acta Chir. Belg. 102 (2): 114–17. doi:10.1080/00015458.2002.11679276. PMID 12051083. S2CID 2502428.

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Classification	D ICD-10: K68.12 ICD-9-CM: 567.31 MeSH: D016659

Diseases of the human digestive system

Upper GI tract

Esophagus

Stomach

Lower GI tract
Enteropathy

Small intestine (Duodenum/Jejunum/Ileum)	Enteritis Duodenitis Jejunitis Ileitis Peptic (duodenal) ulcer Curling's ulcer Malabsorption: Coeliac Tropical sprue Blind loop syndrome Small intestinal bacterial overgrowth Whipple's Short bowel syndrome Steatorrhea Milroy disease Bile acid malabsorption
Large intestine (Appendix/Colon)	Appendicitis Colitis Pseudomembranous Ulcerative Ischemic Microscopic Collagenous Lymphocytic Dysentery Functional colonic disease IBS Intestinal pseudoobstruction / Ogilvie syndrome Megacolon / Toxic megacolon Diverticulitis/Diverticulosis/SCAD
Large and/or small	Enterocolitis Necrotizing Gastroenterocolitis IBD Crohn's disease Vascular: Abdominal angina Mesenteric ischemia Angiodysplasia Bowel obstruction: Ileus Intussusception Volvulus Fecal impaction Constipation Functional Diarrhea Infectious Intestinal adhesions
Rectum	Proctitis Radiation proctitis Proctalgia fugax Rectal prolapse Anismus Solitary rectal ulcer syndrome Rectal stricture
Anal canal	Anal fissure/Anal fistula Anal abscess Hemorrhoid Anal dysplasia Pruritus ani Anal stricture

GI bleeding

Accessory

Liver	Hepatitis Viral hepatitis Autoimmune hepatitis Alcoholic hepatitis Cirrhosis PBC Fatty liver MASLD Vascular Budd–Chiari syndrome Hepatic veno-occlusive disease Portal hypertension Nutmeg liver Alcoholic liver disease Liver failure Hepatic encephalopathy Acute liver failure Liver abscess Pyogenic Amoebic Hepatorenal syndrome Peliosis hepatis Metabolic disorders Wilson's disease Hemochromatosis
Gallbladder	Cholecystitis Gallstone / Cholelithiasis Cholesterolosis Adenomyomatosis Postcholecystectomy syndrome Porcelain gallbladder
Bile duct/ Other biliary tree	Cholangitis Primary sclerosing cholangitis Secondary sclerosing cholangitis Ascending Cholestasis/Mirizzi's syndrome Biliary fistula Haemobilia Common bile duct Choledocholithiasis Biliary dyskinesia Sphincter of Oddi dysfunction
Pancreatic	Pancreatitis Acute Chronic Hereditary Pancreatic abscess Pancreatic pseudocyst Exocrine pancreatic insufficiency Pancreatic fistula

Other

Hernia

Lumbar
- Petit's
- Grynfeltt–Lesshaft

Undefined location

Peritoneal

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