Overview
Acute appendicitis complicated by the formation of a peritoneal abscess involves inflammation of the appendix progressing to localized infection within the peritoneal cavity. 1Diagnosis
Clinical Presentation: Right lower quadrant pain, fever, leukocytosis 1
Imaging: CT scan often reveals the abscess and associated inflammation 1
Nuclear Medicine: Gallium-67 scintigraphy can highlight abscesses due to increased uptake, though interpretation may be influenced by transferrin levels and iron status 1Management
Surgical Intervention: Primary treatment typically involves surgical drainage or appendectomy with abscess drainage 1
Antibiotics: Broad-spectrum antibiotics initiated preoperatively and tailored based on culture results postoperatively 1
Supportive Care: Fluid resuscitation, pain management, and monitoring for complications 1Special Populations
Iron Status Consideration: Interpretation of gallium-67 scans may be affected by reduced transferrin levels, particularly in patients with altered iron metabolism 1Key Recommendations
Utilize CT imaging for definitive diagnosis and characterization of peritoneal abscess in acute appendicitis (Evidence: Moderate) 1
Consider gallium-67 scintigraphy for abscess localization, accounting for potential interference from low transferrin levels (Evidence: Weak) 1
Initiate broad-spectrum antibiotics preoperatively and adjust based on culture results postoperatively (Evidence: Expert opinion) 1References
1 Weiner RE, Spencer RP, Dambro TJ, Klein BE. Gallium-67 distribution in a man with a decrease in both transferrin and hepatic gallium-67 concentration. Journal of nuclear medicine : official publication, Society of Nuclear Medicine 1992. link