Clinical features:
(1) fever, sometimes presenting as a fever of unknown origin (FUO)
(2) left upper abdominal pain
(3) malaise
(4) variable nausea and vomiting
(5) variable splenomegaly
(6) variable left upper quadrant tenderness
(7) neutrophilia
A high index of suspicion, especially in the presence of one or more risk factors (see previous section) may be important for prompt diagnosis.
Imaging studies of the upper abdomen are key for making the diagnosis.
Complications related to rupture of the abscess or spleen:
(1) peritonitis or intra-abdominal abscess
(2) intra-abdominal hemorrhage
