This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection of Bones & Joints, Subject name: Orthopaedics
[{'content': 'Brodies abscess common in: \nSelect and explain. \nA. Long bones of metaphysis, B. Long bones of diaphysis, C. Mandible, D. Vertebral bodies', 'role': 'user'}, {'content': "Answer: A \nExplanation: (Long bones of diaphysis): Ref: 163-M, 32-ABRQDIE'S ABSCESS (sub acute hacmatogenous oslcomyclitis)A chronic bone abscess containing pus or Jelly - like granulation tissue surrounded by a zone of sclerosisClinical features: -* 11-20 years of age* Common sites are the upper end of the tibia and lower end of the femur* Usually located in the metaphysisGarre's sclerosing osteonn elilis: - non suppurating ostcomycliles which is characterized by marked sclerosis and cortical thickening. There is no abscess only a diffuse enlargement of the bone at the affected site - usually the diaphysis of the tubular bones or the mandible", 'role': 'assistant'}]