Wasielewski Lisa P, Lally David R, Waheed Nadia K
Ophthalmic Surg Lasers Imaging Retina. 2015 May;46(5):582-4. doi: 10.3928/23258160-20150521-12.
Enhanced depth imaging spectral-domain optical coherence tomography (EDI SD-OCT) provides a rapid and easily accessible measure to evaluate suspicious choroidal lesions. A 60-year-old woman was referred for evaluation of an inferotemporal slightly pigmented lesion that showed a large hyporeflective elevation in the deep choroid on EDI SD-OCT. After applying pressure to the globe, repeat EDI SD-OCT showed flattening of the lesion with a prominent depression or "divot" within the choroid of the center of the lesion. If noted on imaging, this divot sign is an additional reproducible diagnostic finding that can correctly identify a suspicious choroidal lesion as a benign choroidal varix.
增强深度成像光谱域光学相干断层扫描（EDI SD-OCT）提供了一种快速且易于获取的方法来评估可疑脉络膜病变。一名60岁女性因评估颞下象限轻度色素沉着病变而前来就诊，该病变在EDI SD-OCT上显示为脉络膜深层的一个大的低反射性隆起。对眼球施加压力后，重复进行的EDI SD-OCT显示病变变平，病变中心脉络膜内有一个明显的凹陷或“小坑”。如果在成像中发现，这种小坑征是另一个可重复的诊断发现，可将可疑脉络膜病变正确识别为良性脉络膜静脉曲张。
