Prolonged Fever with Abdominal Pain: Diagnostic Considerations

Key Diagnostic Considerations

In patients with abdominal pain and fever, intra-abdominal abscesses present with fever, diffuse or localized abdominal pain, and may have predisposing conditions including appendicitis, diverticulitis, inflammatory bowel disease, or pancreatitis, according to the American College of Radiology 1, 2
Malignant conditions, including lymphoma and necrotizing masses, can present identically with abdominal pain and fever, as noted by the American College of Radiology 1
In elderly patients, laboratory tests may be nonspecific and normal despite serious infection, highlighting the importance of clinical judgment, as reported by the American College of Radiology 2

CT abdomen and pelvis with IV contrast is the preferred initial imaging study, as it changes the leading diagnosis in 49% of cases, alters admission status in 24%, and modifies surgical plans in 25%, according to the American College of Radiology 3
CT detects abscesses, peritoneal thickening, lymphadenopathy, omental masses, and bowel abnormalities, as noted by the American College of Radiology 1, 5
CT increases detection of cholecystitis/cholangitis by 100% and pelvic inflammatory disease by 280% compared to clinical assessment alone, as reported by the American College of Radiology 3

Plain abdominal radiographs have low sensitivity and should not delay CT imaging, as stated by the American College of Radiology 1, 2
Neutropenic or immunocompromised patients may lack typical signs of infection, leading to delayed diagnosis and high mortality, highlighting the need for prompt evaluation, as noted by the American College of Radiology and the World Journal of Emergency Surgery 2, 4

Percutaneous drainage under CT or ultrasound guidance combined with broad-spectrum antibiotics is a recommended treatment approach, as reported by the American College of Radiology 5, 3
Surgery is reserved for complications including perforation or failed percutaneous drainage, as noted by the World Journal of Emergency Surgery 4

Broad-spectrum antibiotics with bowel rest, and surgery only for perforation or ischemia, is a recommended treatment approach, as reported by the World Journal of Emergency Surgery 4