alexa Digital imaging in differential diagnosis of small choroidal melanoma.


Journal of Clinical & Experimental Dermatology Research

Author(s): Saari JM, Kivel T, Summanen P, Nummelin K, Saari KM

Abstract Share this page

Abstract BACKGROUND: To assess the role of digital imaging and a new subtraction method for differential diagnosis of choroidal nevus and small choroidal melanoma. METHODS: Of 241 consecutive patients referred to a tertiary referral center for suspected choroidal melanoma, 110 who underwent digital imaging of the ocular fundus were eligible for this study. Digital color, red-free and red light retinal images were evaluated in a randomized and masked manner and by the subtraction method for diagnosis of the fundus lesion. The reference standard was based on the combined results of ophthalmological examination, including mydriatic ophthalmoscopy, B scan ultrasonography, digital imaging and fluorescein angiography of the ocular fundus. RESULTS: Comparative use of digital color, red-free and red light imaging had 85.7\% (95\%CI 42.1-99.6) sensitivity, 99.0\% (95\%CI 94.7-99.9) specificity and 98.2\% (95\%CI 93.6-99.8) exact agreement versus reference standard in differentiation of small choroidal melanoma from pseudomelanoma. Direct comparison between use of digital images and the reference standard showed excellent agreement in detecting small choroidal melanoma from suspected choroidal lesions (K 0.847; 95\%CI 0.639-1.0). The subtraction method was useful to show growth in four of 94 melanocytic choroidal tumors. The mean annual incidence of choroidal melanoma in Southwest Finland was 0.80 per 100.000 population. The most frequent choroidal pseudomelanomas were choroidal melanotic and amelanotic nevi, disciform lesions, congenital hypertrophy of the retinal pigment epithelium, and circumscribed choroidal hemangioma. CONCLUSIONS: Combined use of digital color, red-free and red light imaging was a suitable adjunct in differentiation of small choroidal melanoma from different pseudomelanomas. The subtraction method may reveal early growth of the melanotic choroidal tumors. This article was published in Graefes Arch Clin Exp Ophthalmol and referenced in Journal of Clinical & Experimental Dermatology Research

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version