The Epidemiology and Survival Outcomes of Adult Conjunctival Malignancies in Germany: A Decade-Long Population-Based Analysis (2009-2019).

Purpose: This study aims to evaluate the epidemiological patterns, treatment strategies, and survival outcomes of conjunctival malignancies in Germany between 2009 and 2019.

Methods: A total of 1,532 cases were analyzed, with the crude incidence rate calculated. The survival rates were investigated using life tables and Cox regression analysis.

Results: The overall incidence rate was 1.7 per million. Incidence rates varied across age groups, peaking in the 75+ age group. Carcinomas (43%), melanomas (30%), and lymphomas (20%), were the most prevalent malignancies. Of the total cases with reported treatment, surgical intervention was undertaken in 64.5% of the patients. The 5-year overall survival rates were 90.4% for lymphomas, 73.8% for melanomas, and 72.9% for carcinomas. Age at diagnosis emerged as a significant prognostic factor in the Cox regression analysis.

Conclusions: This study provides the first population-based incidence data on conjunctival malignancies in Germany, noting a generally low incidence with survival rates comparable to other regions. The findings underscore the importance of consistent reporting and further research into risk factors for a deeper understanding of these malignancies. The study calls for improved reporting systems and further investigations into genetic factors and targeted prevention strategies for high-risk groups.