Fundus image observation of choroidal nodules in neurofibromatosis type 1
10.3760/cma.j.cn511434-20221010-00535
- VernacularTitle:1型神经纤维瘤病中脉络膜结节的眼底影像观察
- Author:
Dan HE
1
;
Juan ZHANG
;
Juanjuan LI
Author Information
1. 云南大学附属医院眼科 云南省第二人民医院 云南省眼科医院, 昆明 650021
- Keywords:
Neurofibromatosis type 1;
Choroidal nodules;
Infrared photography;
Tomography, optical coherence
- From:
Chinese Journal of Ocular Fundus Diseases
2023;39(10):823-827
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To observe the imaging characteristics of fundus choroidal nodules in patients with neurofibromatosis type 1 (NF1).Methods:A retrospective clinical study. From January 2018 to August 2022, 20 eyes of 10 patients with NF1 combined with choroidal nodules who were diagnosed by ophthalmology examination at the Affiliated Hospital of Yunnan University were included in the study. Among them, there were 6 male cases with 12 eyes and 4 female cases with 8 eyes; both eyes were affected. Age was (28.0±6.9) years old. Both eyes were involved. All patients underwent color fundus photography, infrared fundus photography (IR), fundus autofluorescence (FAF), fluorescein fundus angiography (FFA), and optical coherence tomography (OCT). Nine eyes underwent multi-wavelength color imaging (MC) and 5 eyes underwent OCT angiography (OCTA).Results:In 20 eyes, fundus color photography showed "spiral-like" changes in the small retinal blood vessels on the surface of the choroidal nodules in 1 eye. FAF and FFA examination showed no abnormalities in all affected eyes. On IR examination, choroidal nodules appeared as strong reflective lesions of varying sizes and numbers, in the form of spots and/or sheets, and were partially fused. In the 9 eyes that underwent MC examination, patchy red signals was observed in standard MC images. OCT examination showed that all affected eyes had strong choroidal reflective mass lesions under the retinal pigment epithelium, which were flat patchy or slightly raised "dome-like", corresponding to IR strong reflective lesions. The choriocapillaris layer was squeezed and thinned, and the large choroidal vessels show weak reflection. Five eyes underwent OCTA examination, there was no loss of blood flow density at the choroidal nodules and the of the superficial an deep retinal capillary plexus in 3 eyes. The choroidal capillary blood flow density was reduced in 2 eyes.Conclusion:IR of choroidal nodules is characterized by strong reflection lesions of varying sizes and numbers, which appear in spots and/or sheets. OCT shows enhanced reflection of the choriocapillaris layer corresponding to the strong IR reflection lesions.
