{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T20:48:02Z","timestamp":1792702082199,"version":"4.5.0"},"reference-count":23,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2022,1,31]],"date-time":"2022-01-31T00:00:00Z","timestamp":1643587200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Current Oncology"],"abstract":"<jats:p>Background: Intraocular lymphoma (IOL) presents a real challenge in daily diagnostics. Cyto- and\/or histopathology of vitreous body represent the diagnostic cornerstones. Yet, false negative results remain common. Therefore, we analyzed the diagnostic significance of flow cytometry (FC) within the workup algorithm of IOL and compared its sensitivity with the results obtained from routine cytopathology and molecular genetics; Methods: Seven patients undergoing vitrectomy due to suspected IOL were investigated by FC and parallel cytopathology and, if available, digital droplet PCR (ddPCR) for MYD88 L265P; Results: Four out of seven patients were finally diagnosed with IOL. Among the IOL patients, cytopathology confirmed the presence of lymphoma cells in only two cases. In contrast, FC was positive for IOL in all four cases, and FC additionally confirmed the lack of IOL in the remaining patients. In IOL patients diagnosed by FC and with available ddPCR, the diagnosis of IOL was confirmed by the presence of the MYD88 L265P mutation in all three patients; Conclusions: The combination with FC was superior to cytopathology alone in the diagnostic work-up of IOL, and it showed an excellent correlation with ddPCR results. A comprehensive diagnostic panel consisting of cytopathology, FC and molecular genetics should be considered for the work-up of suspected IOL.<\/jats:p>","DOI":"10.3390\/curroncol29020065","type":"journal-article","created":{"date-parts":[[2022,2,1]],"date-time":"2022-02-01T09:59:21Z","timestamp":1643709561000},"page":"766-776","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Comprehensive Laboratory Diagnostic Workup for Patients with Suspected Intraocular Lymphoma including Flow Cytometry, Molecular Genetics and Cytopathology"],"prefix":"10.3390","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0178-1729","authenticated-orcid":false,"given":"Evgenii","family":"Shumilov","sequence":"first","affiliation":[{"name":"Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland"},{"name":"Department of Medicine A, Haematology, Oncology, and Pneumology, University Hospital M\u00fcnster, 48149 M\u00fcnster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6317-0216","authenticated-orcid":false,"given":"Paolo","family":"Mazzeo","sequence":"additional","affiliation":[{"name":"Department of Hematology and Medical Oncology, University Medicine G\u00f6ttingen (UMG), 37075 G\u00f6ttingen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin S.","family":"Zinkernagel","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Myriam","family":"Legros","sequence":"additional","affiliation":[{"name":"Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2515-1935","authenticated-orcid":false,"given":"Naomi","family":"Porret","sequence":"additional","affiliation":[{"name":"Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lorenz","family":"Romagna","sequence":"additional","affiliation":[{"name":"Department of Medical Oncology, Inselspital, Bern University Hospital, 3012 Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Detlef","family":"Haase","sequence":"additional","affiliation":[{"name":"Department of Hematology and Medical Oncology, University Medicine G\u00f6ttingen (UMG), 37075 G\u00f6ttingen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Georg","family":"Lenz","sequence":"additional","affiliation":[{"name":"Department of Medicine A, Haematology, Oncology, and Pneumology, University Hospital M\u00fcnster, 48149 M\u00fcnster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Urban","family":"Novak","sequence":"additional","affiliation":[{"name":"Department of Medical Oncology, Inselspital, Bern University Hospital, 3012 Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yara","family":"Banz","sequence":"additional","affiliation":[{"name":"Institute of Pathology, University of Bern, 3012 Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6055-5257","authenticated-orcid":false,"given":"Thomas","family":"Pabst","sequence":"additional","affiliation":[{"name":"Department of Medical Oncology, Inselspital, Bern University Hospital, 3012 Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8771-947X","authenticated-orcid":false,"given":"Ulrike","family":"Bacher","sequence":"additional","affiliation":[{"name":"Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,31]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1631","DOI":"10.1016\/S0161-6420(87)33256-7","article-title":"Clinical features, laboratory investigations, and survival in ocular reticulum cell sarcoma","volume":"94","author":"Freeman","year":"1987","journal-title":"Ophthalmology"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1239","DOI":"10.1016\/0360-3016(88)90210-6","article-title":"Primary orbital lymphomas","volume":"15","author":"Reddy","year":"1988","journal-title":"Int. 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