Three-dimensional ultrasonography of choroidal melanoma: Extrascleral extension

PURPOSE: To describe the results of three-dimensional ultrasonography used to evaluate extrascleral extension of a choroidal melanoma, METHODS: Case report, The three dimensional ultrasound system uses a 10-MHz B-mode transducer combined with a motorized rotating holder. The system ac quires 180 sequential images that are scored and processed to create a thre e-dimensional block of the region of interest, RESULTS:Unique coronal and oblique perspectives were obtained from interact ive manipulation of the three-dimensional reconstruction. Examination of th e three-dimensional image allowed us to detect the transscleral uveal-orbit al connection. Extrascleral melanomatous extension was confirmed on histopa thologic examination. CONCLUSION: Three-dimensional ultrasonography is a promising imaging techni que for evaluating melanomatous extrascleral extension. (Am J Ophthalmol 19 98;126:842-844, (C) 1998 by Elsevier Science Inc. All rights reserved.).