ke/hs/nl/rg.

Name of the Patient : Abc Xyzgar Dlmn / M / 15 yrs.
Referred by : Dr. Abc Xyzhah / Dr. Abc Xyzpadia.
Examination : M.R.I. of the Left Knee Joint.

CLINICAL PROFILE :

H/O injury to the left knee by a cricket bat 1 year back with pain and swelling (on walking) since then.
H/O click +.

EXAMINATION :

M.R.I of the left knee joint was performed using the following parameters :

4 mm thick T1 Weighted, proton and GRASS (with fat saturation) sagittal images.

4 mm thick T1 Weighted and STIR coronal images.

5 mm thick GRASS (with fat saturation) axial images.

OBSERVATION :

There is a large lobulated well-defined lesion within the epiphysis and metaphysis of the left tibia and measures approximately 4.2 x 4.1 x 3.5 cms. This lesion is hypointense to the marrow on the T1 Weighted images and turns hyperintense on the T2 Weighted and STIR images. Few hyperintense areas on the T1 Weighted images are seen at the periphery of the lesion which are seen to turn hypointense on the T2 Weighted images and would represent calcification/paramagnetic substance deposition. The periphery of this lesion is hypointense on the T2 Weighted and Grass images and may represent sclerosis. Fluid-fluid level is seen in the lesion. The knee joint per se is unremarkable.





The menisci, cruciate and collateral ligaments, patellar tendon, Hoffas fat pad and the articular cartilage and bones are normal.

IMPRESSION :

The MRI features are suggestive of a large lobulated well-defined lesion within the epiphysis and metaphysis of the left tibia measuring approximately 4.2 x 4.1 x 3.5 cms. The possibilities to be considered are :

1. Chondroblastoma.

2. Giant cell tumor.