Choroidal osteoma in deep range imaging OCT (DRI‐OCT)

Abstract

PurposeA study presents features of choroidal osteoma in Deep Range Imaging Optical Coherent Tomography (DRI‐OCT).MethodsWe analysed 5 cases with choroidal osteoma. All patiens were diagnosed, treated and follow‐up at the Ophthalmology and Ocular Oncology Department of University Hospital in Cracow during 2013 and 2015 years. Diagnosis of osteoma was established on basis of typical features found during fundus and ultrasonography examnations. Additionaly, DRI‐OCT was performed in all choroidal osteoma cases. Images were evaluated by four experienced physicians in using DRI‐OCT in differential diagnosis of intraocular tumors.ResultsIn all cases choroidal osteoma were observed smooth undulating tumor surface, multiple intralesional layers, sponge bone structure, transparency with visibility of sclero‐choroidal junction and presence of vessels.ConclusionsChoroidal osteoma is a rare, benign tumor presents mainly at posterior pole of eye globe in young woman. Especially it should be distinguish from amelanotic choroidal melanoma or metastatic tumors. In these controversial cases DRI‐OCT is very useful due to present very characteristic features of choroidal osteoma in this examination.

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“…Romanowska-Dixon showed different OCT image features (Fig. 1), which can suggest malignant transformation, in particular, compression of the choriocapillaris, retinal pigment epithelial (RPE) changes, “shaggy” photoreceptors, and the presence of subretinal fluid [14‒17]. On OCT angiography (OCT-A), she furthermore showed a hyperreflectivity in the choriocapillaris in these patients.…”