title: Extramedullary plasmacytoma of the lateral rectus muscle.
abstract: Plasmacytoma is an uncommon presentation of plasma cell malignancy, especially in the absence of multiple myeloma. Orbital plasmacytomas generally originate from bone, although few cases in the literature report orbital extramedullary plasmacytomas. We present the case of a 68-year-old man found to have a solitary extramedullary plasmacytoma in the lateral rectus muscle without further evidence of multiple myeloma. This case demonstrates a rare presentation for such a malignancy, and a review of the literature highlights the importance of proper workup and close monitoring to rule out multiple myeloma to guide management.
authors.affiliation: a Department of Ophthalmology , New York Eye and Ear Infirmary of Mount Sinai , New York , New York , USA.
authors.forename: Phillip A
authors.initials: PA
authors.lastname: Tenzel
authors.affiliation: a Department of Ophthalmology , New York Eye and Ear Infirmary of Mount Sinai , New York , New York , USA.
authors.forename: Kapil
authors.initials: K
authors.lastname: Mishra
authors.affiliation: a Department of Ophthalmology , New York Eye and Ear Infirmary of Mount Sinai , New York , New York , USA.
authors.forename: Aleza
authors.initials: A
authors.lastname: Andron
authors.affiliation: a Department of Ophthalmology , New York Eye and Ear Infirmary of Mount Sinai , New York , New York , USA.
authors.forename: Robert C
authors.initials: RC
authors.lastname: Della Rocca
authors.affiliation: a Department of Ophthalmology , New York Eye and Ear Infirmary of Mount Sinai , New York , New York , USA.
authors.forename: Harsha S
authors.initials: HS
authors.lastname: Reddy
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000378:metabolism; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D019042:Muscle Neoplasms / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology* / Q000532:radiotherapy; D009363:Neoplasm Proteins / Q000378:metabolism; D009801:Oculomotor Muscles / Q000473:pathology*; D010954:Plasmacytoma / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology* / Q000532:radiotherapy; D049268:Positron-Emission Tomography; D014057:Tomography, X-Ray Computed; D014792:Visual Acuity / Q000502:physiology; D014794:Visual Fields / Q000502:physiology
chemical_list: D014408:Biomarkers, Tumor; D009363:Neoplasm Proteins
keywords: Extramedullary; lateral rectus; multiple myeloma; plasmacytoma