chondroblastoma
chondroblastoma
[kon″dro-blas-to´mah]chon·dro·blas·to·ma
(kon'drō-blas-tō'mă),chondroblastoma
A benign tumour that arises in the epiphysis or in secondary ossification centres of long bones (humerus, proximal and distal femur, proximal tibia) of young adults (< age 30).Imaging
Well-defined lytic lesion with a fluffy cotton-wool appearance, ± sclerotic border.