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Antibody therapy in the initial treatment choice for conjunctival MALT lymphoma Yuriko Shinohara 1 , Kaoru Sasaki 1 , Yuichi Yamamoto 1 , Tsuyoshi Otsuji 2 , Yuri Noda 3 , Hisanori Imai 1 1Department of Ophthalmology, Kansai Medical University 2Department of Ophthalmology, Kansai Medical University Medical Center 3Department of Pathology, Kansai Medical University pp.1243-1249
Published Date 2025/10/15
DOI https://doi.org/10.11477/mf.037055790790101243
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Abstract Purpose:To retrospectively evaluate the initial treatment approaches, including antibody therapy, for conjunctival mucosa-associated lymphoid tissue(MALT) lymphoma.

Subjects and Methods:The clinical course of 20 patients(25 eyes) diagnosed with conjunctival MALT lymphoma and treated at Kansai Medical University Hospital and its Medical Center between 2019 to 2024 using various treatment methods was retrospectively reviewed based on medical records.

Results:The mean age of the patients at the first visit was 68±16 years. Of the 20 patients, 7 were male and 13 were female, 5 cases were bilateral, while 15 were unilateral. Among the six eyes that initially received systemic rituximab(hereinafter referred to as antibody therapy), theree eyes(50%) demonstrated a poor response and subsequently required additional radiation therapy. In contrast, 14 of the 15 eyes(93%) treated with radiotherapy as either initial or additional treatment exhibited tumor shrinkage. One eye experienced recurrence, necessitating the assition of antibody therapy to radiotherapy, and exhibited tumor shrinkage. Tumoor size remained unchanged in all four eyes(100%) that underwent follow-up. Additionally, all the three eyes(100%) that underwent complete surgical resection exhibited tumor shrinkage.

Conclusions:Antibody therapy had limited efficacy as an initial treatment for conjunctival MALT lymphoma. In contrast, radiotherapy and total surgical resection was reaffirmed as effective, with no serious side effects observed. Although periodic follow-up is necessary, observation may also be a viable option. When selecting a treatment strategy, providing patients with sufficient explanations based on interdisciplinary information sharing with other departments.


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