My S.cervisiae continues to rise to 258.8. I was diagnosed with Crohn's disease in 2000. Sigmoid colon gone along with hemicolectomy resulting in a colostomy. Treatment with Remicade & Humira unsuccesful. Small bowel seies & colonoscopy show no Crohns. Can elevated ASCA be caused by anything else or is the Crohn's likely in the rectum?