An Isolated medial rectus involvement in a case of orbital pseudotumor –A rare clinical entity


Original Article

Author Details : Ajay Kumar Arya, Asmita Manoj Kumari, Aalok Kumar

Volume : 2, Issue : 3, Year : 2016

Article Page : 203-205


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Abstract

Purpose: To report a case of isolated medial rectus muscle involvement in patient of orbital pseudotumor presenting as painless proptosis.
Case Report: A 57 year old male presented as painless right proptosis for last 10 months. Patient had blurring of vision for last 3 months. He had revealed non-axial proptosis in right eye with restricted adduction and diplopia. The pupils were normal. There was no history of painful eye movement, fever, photophobia and trauma. Magnetic resonance imaging(MRI) of the orbit was done and revealed uniform enlargement of right medial rectus muscle including muscle belly and tendon. After MRI imaging, the patient was planned for surgical excision as patient had also developed blurring of vision. The endonasal endoscopic translaminar excision was done. Tumor was dissected off from orbital fat and medial rectus muscle. Histopathology showed feature of pseudotumor and no evidence of malignant cells.
Conclusion: This is an atypical case of orbital pseudotumor in which only medial rectus of right eye is involved. Orbital pseudotumor may cause painless proptosis and mimic extraocular tumors. MRI may play important role for diagnosing the pseudotumor, its extent and exclude other cause of proptosis.

Keywords: Medial rectus, Pseudotumor, Proptosis


How to cite : Arya A K, Kumari A M, Kumar A, An Isolated medial rectus involvement in a case of orbital pseudotumor –A rare clinical entity. IP Int J Ocul Oncol Oculoplasty 2016;2(3):203-205


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