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An iris melanocytoma is a dark, deeply pigmented, benign tumor that forms from melanocytes within the iris. It usually appears as a round, heavily pigmented spot. These lesions often stay stable for years. People may not notice symptoms unless the lesion affects nearby structures. Exams help track growth and evaluate potential complications.
read more about iris melanocytoma ...The tumor arises from melanocytes that grow more densely than usual. Most cases occur without a known trigger. Rarely, mild growth may appear after trauma or inflammation. Genetic factors are possible but not well defined. The lesion behaves differently from malignant melanoma.
Most lesions cause no discomfort. People may notice a dark spot on the iris that stands out in bright light. If the lesion blocks fluid flow, pressure may rise. In rare cases, pigment shedding can cloud nearby structures. Symptoms depend on the tumor's size and placement.
Slit lamp exam shows its dense, dark appearance. Ultrasound biomicroscopy helps measure thickness and borders. Doctors check pressure to detect possible obstruction. Serial photos monitor growth over time. Diagnosis distinguishes it from melanoma, which behaves differently.
Most cases require observation only. Treatment is needed if the lesion grows or raises pressure. Surgery is rare but considered when complications appear. Regular monitoring ensures that the lesion stays stable. Follow-up focuses on pigment shedding and angle health.
No. It is a benign tumor.
Growth is usually slow or absent.
Yes, if it blocks the drainage angle.
Seek care if the spot enlarges or pressure increases.