Histology of small melanomas

Area of Science:

• Ophthalmology
• Oncology
• Pathology

Background:

• Choroidal melanomas are the most common primary intraocular malignancy.
• Accurate histological assessment is crucial for prognosis and treatment planning.

Purpose of the Study:

• To analyze histological features of choroidal melanomas enucleated based on 32P-test results.
• To evaluate the prevalence of epithelioid cells and scleral involvement.
• To inform treatment strategies for early-stage choroidal melanomas.

Main Methods:

• Histological data collection from 193 choroidal melanomas.
• Analysis of tumor size (25 small, 31 medium-sized).
• Assessment of epithelioid cell presence and scleral invasion.

Main Results:

• 34% of tumors exhibited epithelioid cells.
• 70% of tumors showed scleral involvement.
• These percentages were higher than those reported in most previous studies.

Conclusions:

• The high prevalence of epithelioid cells and scleral involvement in this cohort suggests aggressive tumor biology.
• Observation and delayed treatment for small choroidal melanomas are not recommended.
• Early intervention is crucial for better outcomes in choroidal melanoma management.