At the proximal left femoral metaphysis and diaphysis, a 4.6
x 14.3 cm intramedullary mass demonstrates
predominantly isointense T1 and high T2 signal with respect
to muscle, with an area of bony sclerosis and septation at
its distal aspect. There are areas of mild patchy internal contrast enhancement, and features suggestive of bony expansion. No
internal fluid-fluid levels, cortical breech or adjacent soft
tissue mass identified. There is sparing of the femoral head.
A smaller, slightly ill-defined intramedullary lesion of
similar signal characteristics is identified (incompletely seen) at the
superoposterior acetabulum, measuring.
This also does not demonstrate cortical breech or an
soft tissue mass.