Catherine Favard
Centre ophtalmologique de l’Odeon and in Pr Brezin department, France
Title: SSOCT and SSOCT-Angiography fo the analysis of Circumscribed Choroidal Hemangiomas
Biography
Biography: Catherine Favard
Abstract
Purpose: The longer wavelenght of swept source OCT (SSOCT), enables better penetration of retinal pigment epithelium and analysis of choroidal tumors. We present here the contribution of SSOCT and SSOCT-angiography (SSOCT-A) to the diagnosis of circumscribed choroidal hemangiomas (CH) .
Methods: 7 CH have been analysed with multimodal imaging : color fundus photography, ultrasonography (US), fluorescein (FA) and infracyanin green angiography (ICGA), and SSOCT and SSOCT-A (DRI SS-OCT Triton, Topcon).
Results : On SSOCT, all 7 CH presented the characteristic signs of CH with an acutely smooth dome-shaped tumor with thick and large spongelike choroidal vessels and partial posterior shadowing associated with subretinal fluid in 3 eyes. On SS-OCTA all cases presented an hypersignal of dilated choroidal tumoral vessels with loops, interspaced by dark areas and surrounded by an hypersignal rim. In 4 cases large abnormal tumoral vessels were observed both at the choriocapillary and choroid level, associated with choriocapillaris alterations on SSOCT and presented an ICGA late phase wash out. In 3 cases, much thinner tumoral vessels were observed on SSOCT-A below a normal choriocapillaris on SSOCT and SSOCT-A, with no late phase ICGA wash out.
Discussion and Conclusion: SSOCT and SSOCT-A enabled us to distinguish 2 types of CH : one associated with large superficial tumoral vessels could correspond to cavernous hemangiomas and one with thinner tumoral vessels below the choriocapillaris which could correspond to mixte or capillary hemangiomas. Therefore, SSOCT and SSOCT-A contribute to the diagnosis of CH and provide new insight for CH vascular pattern analysis.