hs/ke/nl/rg.

Name of the Patient : Abc XyzP. Plmn / F / 21 yrs.
Referred by : Dr. Abc Xyzmpat.
Examination : M.R.I. of the Orbits.

CLINICAL PROFILE :

C/O swelling in the region of the left eyelid since 1 month.

EXAMINATION :

M.R.I of the orbits was performed using the following parameters:

3 mm thick T1 Weighted and STIR coronal images.

3 mm thick T1 Weighted oblique sagittal images.

3 mm thick STIR oblique sagittal images through the left orbit.

The brain was screened with 5 mm thick T1 Weighted and T2 Weighted axial images.

OBSERVATION :

There is thickening of the insertion of the superior rectus muscle to the globe on the left side. This is seen to be near isointense to normal muscle on the T1 Weighted images and turns hyperintense on the STIR images. There is slight hyperintense signal of the bally of the superior rectus muscle on the left side.

The extraocular muscles within the right orbit shows normal contour, size and signal characteristics.

The intraorbital optic nerves are of normal size and reveal normal signal characteristics. Adequate perioptic CSF is evident on this study.
Scan-00003


The orbital walls do not show any obvious destruction or erosions. The right globe is unremarkable. The superior orbital fissure and optic canal bilaterally are unremarkable.

The superior surface of the anterior pituitary gland appears bulky and is seen to almost abut the optic chiasma to the right of the midline and this may be normal for the patients age. However no obvious mass lesion is seen in the pituitary.

IMPRESSION :

The MRI features are suggestive of a pathologic process involving the distal superior rectus muscle within the left orbit. This most likely represents an inflammatory pathology eg. a pseudotumor. The possibility of this being a neoplastic process, though less likely, cannot be entirely excluded.