"Soap bubble appearance" is seen in:
[Cl (Giant cell tumour): Ref: 181-AGiant c ell tumour"Soap bubble appearance" due to ridging of the surrounding bonesThe appearance of a 'cystic" lesion in mature bone, extending right to the subchondral plate is so characteristic that the diagnosis is seldom in doubt.Aneurysmal bone evst: - well defined radio lucent cyst, often trabeculated and eccentrically placed. It usually docs not extend right upto the articular margin.Osteochondroma: - Large lesions show "cauliflower " appearance with degeneration and calcification in the centre of the cartilage cap.Chondroblastoma: - well demarcated radiolucent area in epiphysisChondromvxoid fibroma: - Rounded or ovoid radio lucent area placed eccentrically in the metaphysis. The endosteal margin may be scalloped, but is almost always bounded by a dense zone of reactive bone extending tongue - like towards the diaphysis.Chondroma (Enchondroma): - Centrally placed radiolucent area at the junction of metaphysis and diaphysis. In mature lesions there are flecks or wisps of calcification within the lucent area (Pathognomic features)Osteoblastoma (Giant osteoid osteoma): well demarcated osteolytic lesion which may contian small flecks of ossification radio isotpe scan will reveal the hot area.Osteoidosteoma: - A small radiolucent area, the so called 'Nidus' lesion in the diaphysis are surrounded by dense sclerosis and cortical thickening.
Simple unicameral cyst
Aneurismal cyst
Giant cell tumour
Osteogenic sarcoma
Bone Tumour