Abstract
Eosinophilic gastroenteritis (EGE) is an inflammatory disease characterized by a significant increase in eosinophils. EGE itself is rare, and cases with clinical manifestations of hemorrhagic ascites are even rarer, which undoubtedly increases the risk of misdiagnosis. Given this, this study reports a rare case of pediatric EGE presenting with paroxysmal abdominal pain without apparent cause, accompanied by acute tonsillitis and mesenteric lymphadenitis, suggesting a possible intestinal infection. Following diagnostic evaluations, including abdominal ultrasound, abdominal computed tomography (CT), ascites sediment smear, bone marrow aspirate smear, and gastroscopic pathology, the child was diagnosed with EGE. Initial intravenous treatment with Ceftriaxone Sodium (Rocephin) didn't alleviate abdominal pain, and ascites gradually increased. After confirming EGE, the patient was given oral anti-inflammatory and anti-allergic treatment with Singulair and cetirizine tablets, as well as anti-inflammatory treatment with prednisone tablets. This case report will provide valuable insights into the diagnosis and treatment of EGE.