Ocular Tumors Publisher



Ebrahimiadib N¹ ; Esfahani HR¹ ; Hajizadeh F²
Source: Atlas of Ocular Optical Coherence Tomograph# Second Edition Published:2023

Abstract

This chapter of the book beautifully illustrates mulltimodal imaging of a variety of intraocular tumors with a greater focus on enhanced-depth imaging (EDI). The choroidal nevus as one of the most common ocular tumors has been represented at the beginning of this section, which is then followed by choroidal melanoma. Although a nevus and melanoma have many features in common, differentiating aspects have been emphasized. Astrocytoma is another intraocular tumor originating from the nerve fiber layer and consists of different types. Several hamartomas can occur in the retina including retinal and choroidal hamangioma and combined hamartoma of the retina and RPE. Retinal capillary hemangioma which can be part of von-Hippel-Lindau is usually located in the periphery of the retina. In this chapter, we showed a rare form of peripapillary endophytic retinal angioma. In addition, choroidal hemangioma in its two forms (circumscribed or diffuse) and the peripapillary location of the tumor have been demonstrated. Echography, ICGA, and FA are also included to better demonstrate various manifestations of these tumors. Combined hamartoma of the retina and RPE is usually located in the peripapillary region and sometimes in the macular area. We showed multimodal imaging of both types of this tumor. Choroidal osteoma is a choristoma that has a unique OCT image that includes bone lamella and tubules representing vascular channels, as well as calcification. Choroidal metastasis does not have any specific feature in fluorescein or indocyanine green angiography; instead, a lumpy-bumpy appearance of the retinal pigment epithelium (RPE) on OCT can be very suggestive. Optic disc melanocytomas and hamartomas are rare diseases; OCT imagings of these diseases are displayed as well. We have also included various imaging presentations of lymphoma in the form of vitreoretinal and rare form of choroidal lymphoma. At last, figures of choroidal granuloma which can masquerade as a choroidal tumor were shown. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2022.