This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small and Large Intestines, Subject name: Pathology
[{'content': "Anti-Saccharomyces cerevisiae antibodies are seen in? \nSelect and explain. \nA. Crohn's disease, B. Scleroderma, C. SLE, D. Sjogren's syndrome", 'role': 'user'}, {'content': "Answer: A \nExplanation: ANSWER: (A) Crohn's diseaseREF: Harrison's Internal Medicine 17m edition chapter 289. Inflammatory Bowel DiseaseAnti-Saccharomyces cerevisiae antibodies (ASCA), along with perinuclear antineutrophil cytoplasmic antibodies (pANCA), are among the two most useful and often discriminating markers for colitis. ASCA tends to recognize Crohn's disease more frequently, whereas pANCA tend to recognize ulcerative colitis", 'role': 'assistant'}]