Abnormal abdomen morphology Abdominal aseptic abscess 2016-12-04T20:11:28Z An abscess-like lesion located within the abdomen. The lesions are localized in the spleen, liver, abdominal lymph nodes. The lesions represent visceral sterile collections of mature neutrophils that do not respond to antibiotics but regress quickly when treated with corticosteroids, but relapses occur frequently.