Estimating choroidal melanoma volume: comparison of methods.

Abstract

To evaluate published methods of estimating choroidal melanoma volume. Prospective consecutive case series. Ten consecutive patients with primary choroidal melanoma. After determination of tumor dimensions (largest tumor basal diameter, basal perpendicular diameter, and height), tumor volume was calculated for each tumor by using the 5 published methods. Percent differences in tumor volume were determined for each tumor as calculated by different methods. Choroidal melanoma volume. The mean variation in estimated tumor volume expressed as a ratio was 2.33 (range, 1.64-3.84). Choroidal melanoma volume calculation methods are inconsistent and caution is needed when volume measures are used for prognostic classification.