This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': "Generalized necrotising lymphadenopathy is- \nSelect and explain. \nA. Kimura disease, B. Kukuchi disease, C. Non--Hodgkin's lymphoma, D. Castleman's disease", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Kikuchi-Fujimoto disease (KFD), or histiocytic necrotizing lymphadenitis, is a benign and self-limited disease that mainly affects young women. Patients present with localized lymphadenopathy, fever, and leukopenia in up to half of the cases.', 'role': 'assistant'}]