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Nerve Sheath Myxoma Involving the Medial Rectus Muscle: A Case Report.
Ophthalmic Plast Reconstr Surg. 2020 Jun 17 [Online ahead of print]OP

Abstract

A 63-year-old man reported a 2-year history of painless OS proptosis. The first MRI, performed in the institution of origin, resulted in a diagnosis of hemangioma versus orbital pseudotumor. Examination revealed proptosis and mild chemosis. Ancillary tests were normal, and oral prednisone was initiated without remarkable changes. Later, an incisional biopsy identified the lesion as an intramuscular myxoma of the left rectus, and a new MRI was ordered. It described a fusiform thickening of the medial rectus with and exophytic growth below the inferior rectus and upward toward the superior oblique. Due to the localization of the lesion, a combined transcaruncular and swinging eyelid approach with a lateral orbitotomy was performed. Histopathological examination revealed a proliferation of stromal origin composed of myxoid matrix with fusocellular and stellate-shaped cells. Cells were S-100, CD34, and CD56 positive and negative for epithelial membrane antigen, CD68, CD10, actin, and desmin. Results were consistent with a left medial rectus nerve sheath myxoma.

Authors+Show Affiliations

Ophthalmology Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain.Ophthalmology Department, Hospital La Princesa, Madrid, Spain. Ophthalmology Department, Clínica Rementería, Madrid, Spain.Pathology Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain.Radiology Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain.Ophthalmology Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain. Ophthalmology Department, Clínica Novovisión, Madrid, Spain.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32618824

Citation

Mora-Cantallops, Arnau, et al. "Nerve Sheath Myxoma Involving the Medial Rectus Muscle: a Case Report." Ophthalmic Plastic and Reconstructive Surgery, 2020.
Mora-Cantallops A, Won-Kim HR, Navarro-Cantero A, et al. Nerve Sheath Myxoma Involving the Medial Rectus Muscle: A Case Report. Ophthalmic Plast Reconstr Surg. 2020.
Mora-Cantallops, A., Won-Kim, H. R., Navarro-Cantero, A., Martínez-San-Millán, J., & Sales-Sanz, M. (2020). Nerve Sheath Myxoma Involving the Medial Rectus Muscle: A Case Report. Ophthalmic Plastic and Reconstructive Surgery. https://doi.org/10.1097/IOP.0000000000001766
Mora-Cantallops A, et al. Nerve Sheath Myxoma Involving the Medial Rectus Muscle: a Case Report. Ophthalmic Plast Reconstr Surg. 2020 Jun 17; PubMed PMID: 32618824.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Nerve Sheath Myxoma Involving the Medial Rectus Muscle: A Case Report. AU - Mora-Cantallops,Arnau, AU - Won-Kim,Hae-Ryung, AU - Navarro-Cantero,Antonia, AU - Martínez-San-Millán,Juan, AU - Sales-Sanz,Marco, Y1 - 2020/06/17/ PY - 2020/7/4/entrez JF - Ophthalmic plastic and reconstructive surgery JO - Ophthalmic Plast Reconstr Surg N2 - A 63-year-old man reported a 2-year history of painless OS proptosis. The first MRI, performed in the institution of origin, resulted in a diagnosis of hemangioma versus orbital pseudotumor. Examination revealed proptosis and mild chemosis. Ancillary tests were normal, and oral prednisone was initiated without remarkable changes. Later, an incisional biopsy identified the lesion as an intramuscular myxoma of the left rectus, and a new MRI was ordered. It described a fusiform thickening of the medial rectus with and exophytic growth below the inferior rectus and upward toward the superior oblique. Due to the localization of the lesion, a combined transcaruncular and swinging eyelid approach with a lateral orbitotomy was performed. Histopathological examination revealed a proliferation of stromal origin composed of myxoid matrix with fusocellular and stellate-shaped cells. Cells were S-100, CD34, and CD56 positive and negative for epithelial membrane antigen, CD68, CD10, actin, and desmin. Results were consistent with a left medial rectus nerve sheath myxoma. SN - 1537-2677 UR - https://www.unboundmedicine.com/medline/citation/32618824/Nerve_Sheath_Myxoma_Involving_the_Medial_Rectus_Muscle:_A_Case_Report L2 - https://doi.org/10.1097/IOP.0000000000001766 DB - PRIME DP - Unbound Medicine ER -