FFA and ICGA imaging analysis of choroidal metastatic carcinoma

AIM: To compare the imaging features of fundus fluorescein angiography(FFA)and indocyanine green angiography(ICGA)in choroidal metastases, and to provide the basis for the accurate diagnosis of choroidal metastases.METHODS: Six patients(8 eyes)with definite primary malignant tumor lesion were diagnosed, and fundus photographs were taken after mydriasis. FFA and ICGA were simultaneously contrasted with Heidelberg fundus angiography to compare the similarities and differences between the two imaging examinations. RESULTS: FFA showed a low fluorescence at the early stage, a needle-like or spot-like fluorescence at the middle stage and a strong fluorescence band at the late stage, and a weak fluorescence at the edge of the lesion in some cases. The ICGA showed a low fluorescence. There was no significant change in intensity, only 1 case in the reverse phase of the central and focal lesions around the strong fluorescence. CONCLUSION: FFA and ICGA for choroidal metastases have a more characteristic performance, both helpful for the diagnosis of choroidal metastases.