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A Case Report of En-Plaque Meningioma Presenting with Proptosis of the Ipsilateral Eye
Ann Optom Contact Lens 2018;17:71-73
Published online September 25, 2018
© 2018 The Korean Optometry & Contact Lens Study Society

Sukyeon Lee, MD, Sungwon Yang, MD, Jaehoon Na, MD, Jinhwan Park, MD, PhD, Hwa Lee, MD, PhD, Sehyun Baek, MD, PhD

Department of Ophthalmology, Guro Hospital, Korea University College of Medicine, Seoul, Korea
Correspondence to: Sehyun Baek, MD, PhD
Department of Ophthalmology, Guro Hospital, Korea University College of Medicine, #148 Gurodong-ro, Guro-gu, Seoul 08308, Korea
Tel: 82-2-2626-1260, Fax: 82-2-857-8580
Received June 19, 2018; Revised July 11, 2018; Accepted July 11, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Purpose: Meningioma en plaque is a rare subgroup of meningioma that usually exhibits exophthalmos as its presenting symptom. Meningioma en plaque has a female predominance. We report a case of sphenoidal meningioma en plaque in a male patient who presented with proptosis of the ipsilateral eye.
Case summary: A 58-year-old man presented with proptosis of his left eye. Exophthalmometry measurements were 17 mm on the right eye and 19 mm on the left eye. His visual acuity, intraocular pressure, and extraocular movements were normal. There was no sign of lid retraction in either eye. Non-contrast-enhanced computed tomography (CT) revealed an approximately 2 cm-sized, well-defined, soft tissue density mass in the lateral extraconal space of the left orbit. Contrast-enhanced magnetic resonance imaging (MRI) revealed a 3.9 x 3.7 x 2.5 cm-sized, T1 isointense and T2 iso- to hyper-intense, relatively homogeneously well-enhancing mass in the left middle cranial fossa extending to the left lateral extraconal space via the superior orbital fissure. The patient underwent Gamma knife radiosurgery for the meningioma and was postoperatively stable without complications.
Conclusions: The intracranial lesion, meningioma, can easily be missed on CT imaging because meningiomas are usually isodense compared to the cerebrum. Thus, contrast-enhanced MRI should be performed in order to differentiate patients with orbital masses on non-enhanced CT scans.
Keywords : Spheno-orbital en plaque meningioma; Bone invasion; Proptosis

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