Tumour Signs
A registrar is reviewing radiographs of a 15-year-old with knee pain. There is a metaphyseal lesion with aggressive periosteal reaction. They ask about the Lodwick classification and tumour radiological signs. Regarding radiological signs in musculoskeletal tumours:
Mark each as TRUE or FALSE
The Lodwick classification grades bone lesions by their margin pattern: Grade IA (geographic, sclero...
Periosteal reaction types: organised reactions (solid, lamellated) suggest slower growth; aggressive...
Matrix calcification patterns: rings and arcs indicate osteoid matrix (bone-forming tumour); cloud-l...
Ground glass matrix is pathognomonic for fibrous dysplasia; the fallen fragment sign (fallen leaf si...
Classic tumour locations: epiphyseal lesions before skeletal maturity include chondroblastoma (most ...
Answer the questions to see explanations
Click T (True) or F (False) for each option