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Recently, orbital MALT lymphoma has been reported to be associated with <jats:italic>Chlamydia psittaci<\/jats:italic> infection. This study aimed to assess the current patterns of care in clinical practice for orbital MALT lymphoma in South Korea.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We performed a multicenter, cross\u2010sectional cohort study of patterns of care for orbital MALT lymphoma in South Korea throughout 2016. All patients were pathologically confirmed to have orbital MALT lymphoma.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Overall, eight institutions with 90 patients participated. The survey showed that the most frequent upfront treatment for orbital MALT lymphoma was RT (80\/90, 90%). Other treatment modalities were given to a limited number of orbital MALT lymphoma patients as follows: watch and wait, 6\/90 (7%); antibiotics, 3\/90 (3%) and chemotherapy, 1\/90 (1%). Generally, RT was administered to the entire involved site such as the entire conjunctiva\/eyelid or entire orbit (96%), with a median total dose of 25.2\u00a0Gy. Lens shielding was performed for most patients with conjunctival and eyelid tumors (93%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>RT was the conventional treatment modality for orbital MALT lymphoma. Currently, RT is performed for the entire involved subsites at a lower dose than that previously used, and lens shielding was applied to minimize the orbital complication.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ajco.13221","type":"journal-article","created":{"date-parts":[[2019,7,2]],"date-time":"2019-07-02T02:08:19Z","timestamp":1562033299000},"page":"358-363","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Patterns of care for orbital marginal zone B\u2010cell lymphoma of mucosa\u2010associated lymphoid tissue in Korea throughout 2016: Results from a multicenter cross\u2010sectional cohort study (KROG 16\u201319)"],"prefix":"10.1111","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7280-5401","authenticated-orcid":false,"given":"Jeongshim","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Radiation Oncology Inha University Hospital  Incheon Republic of 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