title: Extraocular muscle involvement in MALT lymphomas.
abstract: We report 3 cases of extraocular muscle involvement by MALT (mucosa-associated lymphoid tissue) lymphoma. The first case was a 68-year-old woman who presented with mild proptosis of the left eye and diplopia caused by a lymphoma in the medial rectus. The other two cases presented with ptosis caused by a lymphoma in the most anterior aspect of the levator muscle. MALT lymphoma may involve extraocular muscles, either as a primary or secondary presentation. Although localization of orbital lymphoma in extraocular muscles is rare, this possibility should be considered in the differential diagnosis with other conditions involving extraocular musculature.
authors.affiliation: Service of Ophthalmology, Complejo Hospitalario Universitario de Santiago de Compostela, and Department of Physiology, School of Medicine, University of Santiago de Compostela, Spain. jmabalolojo@yahoo.es
authors.forename: Jose M
authors.initials: JM
authors.lastname: Abalo-Lojo
authors.forename: Sandra
authors.initials: S
authors.lastname: Baleato-Gonzalez
authors.forename: Ihab
authors.initials: I
authors.lastname: Abdulkader
authors.forename: Francisco
authors.initials: F
authors.lastname: Gonzalez
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001763:Blepharoptosis / Q000175:diagnosis / Q000473:pathology / Q000628:therapy; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D008223:Lymphoma / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy; D018442:Lymphoma, B-Cell, Marginal Zone / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy; D008297:Male; D009801:Oculomotor Muscles / Q000473:pathology*; D009918:Orbital Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy