Elsevier

Ophthalmology

Volume 106, Issue 3, 1 March 1999, Pages 623-629
Ophthalmology

A clinical and molecular genetic analysis of solitary ocular angioma

Presented in part as a poster at the Association for Research in Vision and Ophthalmology annual meeting, Fort Lauderdale, Florida, May 1997.
https://doi.org/10.1016/S0161-6420(99)90127-6Get rights and content

Abstract

Objectives

To determine whether ocular angioma can occur in the absence of von Hippel Lindau (VHL) syndrome, to define the clinical characteristics of sporadic (non-VHL) angioma, and to estimate a prevalence for sporadic ocular angioma.

Design and participants

A cross-sectional study of a cohort of patients with apparent sporadic ocular angiomatosis recruited from throughout the United Kingdom.

Intervention

Clinical details and a family history were obtained for the patients in the cohort. Systematic ocular examination and further systemic screening were performed on the patients and relatives when possible. Leukocyte DNA was examined for VHL germline mutations.

Main outcome measures

Patients with solitary and typical VHL-like ocular angioma, without clinical and family histories for VHL, were selected as possible sporadic (non-VHL) ocular angioma cases. An estimate of the population prevalence of sporadic (non-VHL) ocular angioma was made from patients presenting in the East Anglian region of the United Kingdom over a 25-year period.

Results

From 32 patients referred, 17 had typical solitary ocular angioma and no evidence of other VHL complications in themselves or in family members. All 17 patients were negative for germline VHL mutations. The mean age of presentation was 30.9 years (median, 27.5; range, 3–52); 11 of 17 eyes suffered visual loss and 4 of 17 tumors occurred on the optic disc. The estimated prevalence of non-VHL ocular angioma was 9.0 × 10−6, 95% confidence interval (CI) = 3.3 − 19 × 10−6 (1 in 110,000 persons, 95% CI = 1 in 53,000–300,000).

Conclusions

Sporadic ocular angioma can occur in the absence of VHL disease but appears less prevalently than VHL itself. The age of presentation, degree of visual morbidity, complications, morphology, and anatomic location of tumors are similar to those seen in VHL disease.

Section snippets

Ascertainment of cases

Patients with a solitary ocular angioma were ascertained by contacting all ophthalmic and clinical genetics departments in the United Kingdom. Full informed consent was given by each individual after an explanation of the intended research and the nature of the interview and examination. The research had been approved by the ethics committees at Addenbrooke’s Hospital, Cambridge, and at Moorfields Eye Hospital, London.

Patient interview and examination

Full documentation of each patient’s family history and medical history was

Patient details

Thirty-two individuals (13 male, 19 female) were referred for possible inclusion, but after assessment and investigation, 15 were excluded because (1) the clinical appearance of the ocular lesion or lesions was not typical of VHL ocular angioma, but instead resembled retinal telangiectasia or pseudoangioma2, 3, 21, 22 (n = 14); and (2) there were numerous ocular VHL-like angiomas suggesting underlying VHL disease (n = 1). There remained 17 patients (5 males 12 females, P = 0.14) with solitary

Discussion

The ocular lesions originally characterized by Eugene von Hippel26 have been known to be associated with the other manifestations of VHL since Arvid Lindau’s work in the 1920s.27, 28 The clinical manifestations of these ocular lesions are distinct and have been described in detail elsewhere.1, 4, 24 They can be distinguished clinically from other lesions, such as those that occur in Coats disease and similar retinopathies, arterial macroaneurysms, and from the diverse group of vascular lesions

Acknowledgements

The authors thank the many ophthalmologists and clinical geneticists throughout the United Kingdom who made this study possible and who referred patients and allowed access to their facilities for examination purposes. The cases in this study include those referred by Mr. T. A. G. Bell, Mr. L. Benjamin, Mr. J. Bolger, Mr. S. J. Charles, Mr. P. M. Jacobs, Miss J. E. Milson, Mr. J. D. Scott, Mr. G. Woodruff, and Professor I. Young. The authors also thank the patients and their families who gave

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