This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': "All are present in Behcet's syndrome, except: \nSelect and explain. \nA. Arthritis, B. Hepato-splenic involvement, C. Mucocutaneous involvement, D. Neuro-ocular involvement", 'role': 'user'}, {'content': "Answer: B \nExplanation: Behcet's syndrome is a multisystemic, chronic disorder, characterized by oral and genital aphthous ulcers, arthritis, and cutaneous lesions, ocular, gastrointestinal, and neurological manifestations.\xa0\nThis disease is usually present in adulthood and is uncommon in children.\xa0It is well accepted that Behcet's syndrome is associated with the allele HLA-B51\xa0(chromosome 6p21), which is relatively common in many ethnic\xa0groups.\nOrganophosphates, organochlorides, heavy metal intoxication, and allergens are environmental factors that may trigger initiation or exacerbation of Behcet's disease.\nReference: Shafer’s Textbook of ORAL PATHOLOGY Eighth Edition page no 595,596", 'role': 'assistant'}]