Fluid fluid levels in bone tumors and tumoral lesions - Pictorial essay

Fluid fluid level is an important and a rare finding noted on CT and MRI images of tumors and tumoral lesions of bone. Although this finding is commonly seen in primary aneurysmal bone cysts but also noted in other benign and malignant neoplasms of bone. Similar finding also is noted in some tumoral lesions, such as, simple bone cyst and infective conditions. The radiological findings of the host lesions in secondary aneurysmal bone cysts as well as other lesions with fluid fluid levels are described to find out whether differentiation can be done in the neoplasms of bone and also from tumoral lesions.