Polyostotic

 

Polyostotic versus Monostotic

 

Non-aggressive polyostotic lesions

- Fibrous dysplasia

- Paget's disease

- Histiocytosis

- Multiple exostosis

- Multiple enchondromatosis

 

Aggressive polyostotic lesions

- metastases

- Multiple myeloma

- Primary bone tumor with osseous metastases

- An aggressive phase of Paget's disease

- Multifocal osteomyelitis

- Aggressive histiocytosis

- Multifocal vascular bone tumors

Metastasis

 

Solitary

- rare

- thyroid

- kidney

 

Appearance

- moth eaten

- wide zone of transition

- no sclerotic rim

 

Purely lytic

- lung

- breast

- kidney

- thyroid

- GI

- neuroblastoma

 

Blastic

- prostate

- breast

- bladder

- lung

 

Mixed

- breast

- prostate

- lung

 

Non-aggressive

 

Fibrous dysplasia

Paget's disease

Histiocytosis

Multiple exostosis

Multiple enchondromatosis

 

Aggressive

 

Osseous metastases

Multiple myeloma

Primary bone tumor with osseous metastases

An aggressive phase of Paget's disease

Multifocal osteomyelitis

Aggressive histiocytosis

Multifocal vascular bone tumours