Isolated lateral rectus muscle large B cell lymphoma: A rare case report and review of the literature

Seyed Mohsen Rafizadeh; Zohreh Nozarian; Seyed Ali Sonbolestan

doi:10.1016/j.ajoc.2022.101736

Isolated lateral rectus muscle large B cell lymphoma: A rare case report and review of the literature

Am J Ophthalmol Case Rep. 2022 Oct 26:28:101736. doi: 10.1016/j.ajoc.2022.101736. eCollection 2022 Dec.

Authors

Seyed Mohsen Rafizadeh¹, Zohreh Nozarian², Seyed Ali Sonbolestan¹

Affiliations

¹ Department of Oculo-facial Plastic and Reconstructive Surgery, Farabi Hospital, Eye Research Center, Tehran University of Medical Sciences, Tehran, Iran.
² Department of Pathology, Farabi Hospital, Tehran University of Medical Sciences, Tehran, Iran.

Abstract

Purpose: To report a 65-year-old male patient with primary lateral rectus large B cell lymphoma.

Observations: The patient had been referred because of progressive proptosis and limitation of ductions, especially abduction (ortho position at primary gaze) and conjunctival injection. Computerized tomography of the orbit and paranasal sinuses depicted a massive lateral rectus muscle enlargement without any other orbital involvement. Lateral orbitotomy and lateral rectus belly incisional biopsy was done, and histopathologic and immunohistochemical staining and systemic evaluations revealed the diagnosis of primary orbital large B-cell lymphoma.

Conclusions and importance: This case indicated that, though rare, extraocular muscle enlargement could be the main finding of primary orbital lymphoma. Large B-cell lymphoma could involve only the orbital tissues, although it is more prevalent with systemic involvement.

Keywords: Extraocular muscle; Large B-cell; Ocular adnexal lymphoma; Proptosis.

Publication types

Case Reports