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  • Title: RETINAL PIGMENT EPITHELIAL LESIONS ASSOCIATED WITH A SPORADIC CASE OF FAMILIAL ADENOMATOUS POLYPOSIS.
    Author: Alsberge JB, Peng MY, Agarwal A, McDonald HR.
    Journal: Retin Cases Brief Rep; 2022 Nov 01; 16(6):759-761. PubMed ID: 33148946.
    Abstract:
    PURPOSE: To report a sporadic case of a familial adenomatous polyposis (FAP) discovered in a patient with bilateral retinal pigment epithelial lesions. METHODS: Case report. RESULTS: A 30-year-old Asian woman presented for evaluation of bilateral pigmented lesions at the level of the retinal pigment epithelium. She had no personal or family history of colonic polyps or colon cancer. Colonoscopy revealed innumerable adenomatous polyps and genetic testing revealed a mutation in the adenomatous polyposis coli gene consistent with FAP. She subsequently underwent prophylactic total colectomy. CONCLUSION: The pigmented retinal pigment epithelium lesions of FAP have a characteristic appearance and it is vital for the retinal specialist to be familiar with them. De novo mutations in the APC gene are responsible for 20% to 30% of FAP cases. In the presence of the characteristic retinal pigment epithelium lesions, it is important to send the patient for work up of FAP even in the absence of family history of FAP.
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