Outlines,requirements and time allocation 10 min Brodie's abscess: Which is a sharply delineated focus of infection(abscess)in bone. ● The lesion is frequently surrounded by ebumnated bone ● Which is lined by granulation tissue. The fluid in the abscess may be purulent or mucoid. Diagnosis: 10 min Radiographs show a central oval lucency surrounded by dense reactive sclerosis usually within or close to the metaphysis and the lesion may extend across the physis ● MR imaging shows high signal intensity of granulation tissue surrounded by low signal intensity of bone sclerosisOutlines, requirements and time allocation Brodie’s abscess： ⚫ Which is a sharply delineated focus of infection (abscess) in bone. ⚫ The lesion is frequently surrounded by eburnated bone ⚫ Which is lined by granulation tissue. ⚫ The fluid in the abscess may be purulent or mucoid. Diagnosis: ⚫ Radiographs show a central oval lucency surrounded by dense reactive sclerosis usually within or close to the metaphysis and the lesion may extend across the physis ⚫ MR imaging shows high signal intensity of granulation tissue surrounded by low signal intensity of bone sclerosis 10 min 10 min