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Updated: Jun 3, 2026

Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents
Published on: February 15, 2022
Oculomotor disturbances due to granular cell tumor
Sara F T Ribeiro1, Fernando Chahud, Antonio A V Cruz
1Hospital São João School of Medicine, University of Oporto, Oporto, Portugal.
Abstract:
Primary granular cell tumor of the orbit is a rare type of neoplasm. The tumor is frequently associated with extraocular muscles, and eye motility limitation is an unavoidable complication after its surgical removal. The objective of the present article is to review the literature on primary granular cell tumors of the orbit and to report a case of this uncommon neoplasia. Granular cell tumor is a benign lesion encountered in most cases (58.3%) in the inferior aspect of the orbit. Extraocular muscle involvement occurs in 72.2% of the patients, and diplopia is present in 77.1% of the cases. The inferior and medial recti are the most affected muscles (38.5% and 26.9%, respectively). Surgical excision is the only modality of treatment, but diplopia persists in 73.3% of the cases. In conclusion, granular cell tumor is a benign lesion but involves a high rate of extraocular muscle morbidity.
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