Name of the Patient : Abc Xyzai Lalmn / F / 27 yrs.
Referred by : Dr. Abc Xyz.
Examination : M.R.I. of the Left knee & leg.
CLINICAL PROFILE :
Known C/O osteosarcoma of the left distal femur.
C/O pain and swelling.
M.R.I. of the left knee and leg was performed using the following parameters :
4 mm thick T1 Weighted, proton and GRASS sagittal images.
4 mm thick T1 Weighted and STIR coronal images.
5 mm thick T1 Weighted and GRASS axial images.
There is evidence of a mass lesion involving the epiphysis, metaphysis and distal diaphysis of the lower end of the left femur. This lesion is hypointense on the T1 Weighted images and turns heterogeneously hyperintense on the T2 Weighted, GRASS and STIR images (a few areas remain hypointense). The lesion extends for about 9.0 cms, proximally, from the distal margin of the femur.
This lesion is seen to erode the cortex and extend into the adjacent soft tissues. Also seen is extension into the patello-femoral joint with the lesion abutting the patellar
cartilage. Also seen is extension of this lesion into the medial aspect of the left knee joint.
The visualized tibia and fibula per se are unremarkable.
In a known C/O osteosarcoma, the MRI features are suggestive of a mass lesion involving the epiphysis, metaphysis and distal diaphysis of the lower end of the left femur with extension into the left knee joint per se as described. The supero-inferior extent of the lesion is about 9.0 cms, proximally, from the distal margin of the left femur.