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Related Experiment Video

Updated: May 30, 2026

Cell-Free DNA Extraction of Vitreous and Aqueous Humor Specimens for Diagnosis and Monitoring of Vitreoretinal Lymphoma

Cell-Free DNA Extraction of Vitreous and Aqueous Humor Specimens for Diagnosis and Monitoring of Vitreoretinal Lymphoma

Published on: January 12, 2024

Extraocular muscle involvement in MALT lymphomas.

Jose M Abalo-Lojo¹, Sandra Baleato-Gonzalez, Ihab Abdulkader

¹Service 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

Orbit (Amsterdam, Netherlands)

|July 26, 2011

Summary

Mucosa-associated lymphoid tissue (MALT) lymphoma can affect extraocular muscles, causing symptoms like proptosis and diplopia. This rare orbital lymphoma presentation requires consideration in differential diagnoses for eye muscle conditions.

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Published on: September 8, 2011

Area of Science:

Ophthalmology
Oncology
Pathology

Background:

Orbital lymphomas are uncommon neoplasms.
Mucosa-associated lymphoid tissue (MALT) lymphoma is a distinct subtype.
Extraocular muscle involvement by orbital lymphoma is a rare occurrence.

Observation:

Three cases of MALT lymphoma involving extraocular muscles are presented.
Case 1: A 68-year-old woman with proptosis and diplopia due to medial rectus muscle lymphoma.
Cases 2 & 3: Patients presented with ptosis caused by levator muscle lymphoma.

Findings:

MALT lymphoma can manifest as a primary or secondary orbital tumor.
Localization within extraocular muscles is an infrequent but significant finding.
Symptoms correlate with the specific extraocular muscle affected.

Implications:

Clinicians should consider MALT lymphoma in the differential diagnosis of orbital masses affecting extraocular muscles.
Early recognition is crucial for appropriate management and improved patient outcomes.
This finding expands the known spectrum of orbital MALT lymphoma presentations.