title: Standardized a-scan echographic diagnosis of choroidal malignant melanomas.
abstract: Standardized A-scan echography (ultrasonography) is rapidly assuming its appropriate role as a primary diagnostic tool in ophthalmology. Its ability to display "tissue texture" can be used by the experienced examiner to establish a reliable tissue diagnosis in a high percentage of lesions. The most important intraocular neoplasm is the choroidal malignant melanoma, and a diagnostic accuracy in excess of 95% has been reported by Ossoinig et al. This smaller series of proven choroidal malignant melanomas diagnosed preoperatively by standardized A-scan confirms the reliability of this noninvasive technique.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002830:Choroid Neoplasms / Q000175:diagnosis*; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D005260:Female; D006391:Hemangioma / Q000175:diagnosis; D006801:Humans; D008545:Melanoma / Q000175:diagnosis*; D008722:Methods; D014463:Ultrasonography