Radiologic evaluation in the diagnosis of diplopia due to unilateral accessory extraocular muscle

Ryan Nolan; Todd Boscarello; Robby Boparai; Karthik Raghuram

doi:10.1016/j.radcr.2024.09.150

Radiologic evaluation in the diagnosis of diplopia due to unilateral accessory extraocular muscle

Radiol Case Rep. 2024 Oct 29;20(1):334-337. doi: 10.1016/j.radcr.2024.09.150. eCollection 2025 Jan.

Authors

Ryan Nolan¹, Todd Boscarello¹, Robby Boparai¹, Karthik Raghuram²

Affiliations

¹ School of Medicine, University of Nevada, Reno, NV 89557, USA.
² Department of Neurointerventional Radiology, Reno Radiological Associates, Reno, NV 89434, USA.

Abstract

This case report details a case of a 52-year-old female with a history of diplopia and an elevation deficit in her right eye. Initially misdiagnosed as an atavistic retractor bulbi muscle in 2005 via MRI, symptoms persisted despite surgical excision. Follow-up MRI in 2023 confirmed no changes, ruling out other causes like nerve palsy or schwannoma, and ultimately guiding diagnosis towards an accessory extraocular muscle. This case underscores the importance of imaging in diagnosing rare anatomical variations that may present with symptoms similar to more common conditions. Increased awareness of accessory extraocular muscles can enhance diagnostic accuracy and patient outcomes.

Keywords: Accessory; Atavistic retractor bulbi muscle; Extraocular muscle.

Publication types

Case Reports