PMC3995389_01
Orbital MRI. a, b The MRI was performed when the patient was hospitalized for the first time after PP treatment. a A short T1 inversion recovery axial image with contrast enhancement at the first examination is presented. Well-enhanced masses, 3 cm in diameter, in the left orbit are shown. b T1-weighted coronal image. The mass lifted the optic nerve diagonally forward and right and displaced the inferior rectus muscle inferiorly. A high-intensity lesion was shown in the inferior rectus muscle. c, d The MRI was performed 7 years after the initial visit. T1-weighted axial and coronal images without contrast enhancement. The mass volume decreased in size and the optic nerve returned to its normal position. The intramuscular high-intensity area regressed.
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F1
The tumor was diagnosed as an orbital cavernous hemangioma (OCH) by the imaging characteristics (fig. 1a, b). The CsA concentration was kept in the range from 75 to 100 ng/ml, and the tumor was maintained at a size that does not affect the EOM (fig. 1c, d).