[Radiologic features of XXXX of the jaw].

@entity1 @entity421 @entity5 @entity242
@entity421 of the jaw differs from that in other sites because it is less aggressive, rarely metastasizes and appears later in life. The literature lacking a systematic treatise on the radiologic features of this disease, the authors decided to collect the case histories of 9 @entity1 , 5 @entity1 and 4 @entity1 , 24 to 48 years old, suffering from @entity421 of the jaw. Both conventional radiography and CT were used to examine all @entity1 . The accurate study of radiologic findings made it possible to establish 3 basic lesion patterns. The first and very rare one, is characterized by the total absence of neoplastic tissue ossification processes; in this case, the radiologic diagnosis is extremely difficult, even with CT support. The second and more common pattern exhibits evident @entity5 neo-ossification, the most representative cases present several bone lamellae radiating from the lesion, with a sunburst-like appearance. The disease can be diagnosed with conventional radiography alone, especially in the most advanced cases; CT permits the identification of early forms, missed with conventional methods. The third pattern is characterized by amorphous lesion ossification: there are small areas of structureless ossification and a patchy appearance, separated by non-ossified neoplastic tissue. CT shows @entity5 ossification missed at conventional radiography. Finally, the authors observed an extremely rare case of @entity242 of the jaw, considered a variety of @entity421 by some pathologists. The lesion presented uniform neo-ossification which was highly sclerotic and separated from cortical bone by a thin layer of radiolucent tissue: both findings were clearly visible with CT. In conclusion, the systemic use of CT has led to a marked improvement in the radiologic diagnosis of @entity421 of the jaw.
