| Summary: | Abstract Background To describe the effects of intravitreal bevacizumab injection (IVB) and/or transpupillary thermotherapy (TTT) in the treatment of small pigmented choroidal lesions with subfoveal fluid (SFF), and to investigate prognostic value of the therapeutic response in future tumor growth. Methods Retrospective chart review of 19 patients, who were diagnosed with choroidal neovascularization (CNV)-free small pigmented choroidal lesions and treated with IVB and/or TTT, was performed. Results Complete resolution of SFF was achieved in two eyes (2/14; 14.3%) after IVB, and in three eyes (3/4; 75%) after TTT. Best corrected visual acuity was improved in two eyes (2/9; 22%) after IVB, and in three eyes (3/4; 75%) after TTT. Among five patients who underwent TTT after IVB, four patients (4/5; 80%) demonstrated additional advantage. All IVBs could not reduce tumor sizes. Rather, tumor growth was detected in seven out of 14 eyes (7/14; 50%) that underwent IVB. None of the patients who underwent TTT showed tumor growth. The lack of treatment response to IVB was suggestive of malignancy, as most small pigmented lesions that had no response to IVB showed tumor growth (86%, p = 0.010). Conclusion IVB was not effective in reducing tumor size and subfoveal fluid in small pigmented choroidal lesions. Therapeutic response to IVB can be used as an indicator between melanoma and nevus in small pigmented choroidal lesion.
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