Three-dimensional spectral domain optical coherence tomography of retina in choroidal metastasis due to breast and lung carcinoma

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Intraocular metastasis is now considered the most common malignancy of the eye [1]. The frequency of choroidal metastasis in patients with cancer is estimated to be approximately 2 to 7 % [2, 3]. While any portion of the eye can be involved by metastatic disease, the most common tissue involved is the highly vascular choroid [1–3]. There seems to be no predilection for metastasis to preferentially affect the right or left eye [3]. In each affected eye, more than one metastasis may be noted [4]. Most choroidal metastases occur posterior to the equator of the fundus, in the macular or paramacular regions. The common primary sites of cancer are the breast, lung, and gastrointestinal tract [2, 3]. Diagnosis of ocular metastases is based primarily on clinical findings supplemented by imaging studies. Spectral domain optical coherence tomography (SD-OCT) clearly outlines the changes in the retinal architecture due to the underlying choroidal mass. 3D SD-OCT feature of retina following choroidal metastasis due to uterine endometrial carcinoma has been reported by Saxena et al. [5]. 3D SD-OCT in choroidal metastasis due to breast and lung carcinoma is being reported for the first time.