LOCALIZATION-DEPENDENT RADIOGRAPHIC PATTE RNS IN CHONDROBLASTOMA

In a retrospective study the radiographs of 48 chondroblastomas from t he files of the Bone Tumour Registry of Westphalia were evaluated. The purpose of the study was to investigate whether chondroblastomas disp lay localisation-dependent radiographic patterns. All radiographs were analysed using the Lodwick criteria. All chondroblastomas (mean age: 18y., m:f=1.25:1) showed a geographic pattern of bone destruction. 32 lesions affected long bones, 10 short bones, and 6 flat bones. Chondro blastomas localised in flat bones (Lodwick IA: 0 %, IB: 33 %, IC: 67 % ) demonstrated more aggressive patterns of bone destruction compared t o lesions affecting long bones (Lodwick IA: 56 %, IB: 31 %, IC: 13 %) or short bones (Lodwick IA: 40 %, IB: 50 %, IC: 1 0 %). There was no d ifference between the three bone types in other radiographic patterns (periostitis, calcification, trabeculation).