9 year old had missed DX of appendicitis, resulted in rupture with 3 abcsesses slight pleural effusion and partial collapsed lung. Treated with iv antibiotics and appendectomy 2 months later. Then after 3 weeks hospitalized with severe stomach pain, ct revealed moderate acsites and thickening of jejunal wall. Multiple tests found nothing but bloodwork showed very elevated sed rate with elevated crp, platelets and neutrophils. Month later could barely stand and 2nd ultrasound still says fluid in abdomen. Latest us showed no fluid but throughout bloodwork has showed noted increase in inflamatory markers and erratic bloodwork all around. No one has a clue and I m sure her Dr will monitor labs until normal but anyone have any ideas? She has Down syndrome so getting reliable info from her isn t working.