Intra-abdominal abscess

Intra-abdominal abscess (IAA) is an intra-abdominal collection of pus or infected material, usually due to a localized infection inside the peritoneal cavity. It can involve any intra-abdominal organ or be located in between bowel loops, or be free within the peritoneal cavity itself.

Commonly presents with abdominal pain, fever, and leukocytosis.

Usually secondary to inoculation, commonly from complicated intra-abdominal infection (i.e., bowel perforation, anastomotic leak, trauma).

Diagnosis can be confirmed by radiologic studies such as ultrasound or computed tomography (CT) scan. CT scan of the abdomen and pelvis is often more reliable, and provides better delineation of anatomic location and size of the IAA.

Treatment involves adequate source control (abscess drainage, whether percutaneous or surgical) as well as early appropriate and effective antimicrobial therapy.

If untreated, may lead to clinical deterioration including sepsis or septic shock.

Intra-abdominal abscess (IAA), also known as intraperitoneal abscess, is an intra-abdominal collection of pus or infected material and is usually due to a localized infection inside the peritoneal cavity. It can involve any intra-abdominal organ or can be located freely within the abdominal or pelvic cavities, including in between bowel loops. IAA is almost always secondary to a preexisting disease process, or concomitant intra-abdominal process.[1]Kumar RR, Kim JT, Haukoos JS, et al. Factors affecting the successful management of intra-abdominal abscesses with antibiotics and the need for percutaneous drainage. Dis Colon Rectum. 2006 Feb;49(2):183-9. http://www.ncbi.nlm.nih.gov/pubmed/16322960?tool=bestpractice.com It can be caused by one or multiple bacterial, fungal, or parasitic infectious agents.