engleski

Prognostic Value of clinical and histopathological parameters of uveal melanomas: a retrospective study

The aim of the study was to determine clinical and histopathologic prognostic factors for tumor related survival of patients with uveal melanoma. Clinical and histopathologic records of 20 patients with histologically verified uveal melanomas were retrospectively analyzed. Patients were operated on at University Department of Ophthalmology, Split University Hospital in Split, January 1, 1991 and December 31, 2000. Histopathologic confirmation was obtained from the Hospital Department of Pathology, Forensic Medicine and Cytology, Split University Hospital. Standard histological staining with hemalaun and immunohistochemical staining with primary antibody against melanoma antigen and S-100 protein were performed. Data on the cause of death were collected from death certificates obtained from Hospital Department of Pathology, Forensic Medicine and Cytology and from Split Population Registry, Split-Dalmatia County government. The overall annual incidence of uveal melanoma in Split-Dalmatian County was 0.44 per 100, 000. Out of 20 intraocular melanomas, 4 (20%) were located at the ciliary body, 13 (65%) at the choroid, and 3 (15%) at the ciliary body and at the choroid. There was no statistically significant survival difference between groups with different tumor localization (c²=2.747 ; df=3 ; p=0.253). The largest tumor diameter was 35 mm and the smallest 9 mm (median 12 mm), and there was no statistically significant correlation between tumor diameter and survival (Spearman's correlation 0.21). Histological study revealed pure spindle A type melanoma in one (5%) case, pure spindle B type melanoma and pure epithelioid type melanoma in 4 (20%) cases each, and mixed type melanoma in 11 (55%) cases. There was no statistically significant survival difference between groups of patients with different histopathologic types of melanoma (χ²=5.312 ; df=4 ; p=0.150). Study results indicated that none of the study parameters (localization, tumor diameter and histopathology finding) could be considered a valid prognostic factor of uveal melanoma survival.

humans; incidence; melanoma; uveal neoplasms; mortality rate; Croatia

nije evidentirano