Mayo Clinic experience with conjunctival melanomas

Area of Science:

• Ophthalmology
• Oncology
• Dermatology

Background:

• Pigmented lesions of the conjunctiva require careful evaluation due to their malignant potential.
• Understanding the origins and behavior of conjunctival melanomas is crucial for patient outcomes.

Purpose of the Study:

• To analyze surgically excised conjunctival pigmented lesions.
• To correlate clinicopathological features with patient outcomes, focusing on conjunctival melanomas.
• To evaluate the applicability of skin melanoma findings to conjunctival counterparts.

Main Methods:

• Retrospective analysis of 126 surgically excised conjunctival pigmented lesions.
• Correlation of histopathological classification (melanoma, acquired melanosis, nevi) with clinical data and follow-up.
• Application of recent clinical findings from skin melanoma research.

Main Results:

• 42 cases were classified as conjunctival melanomas: 18 de novo, 15 from acquired melanosis, 9 from nevi.
• All six tumor-related deaths occurred in patients with melanomas arising de novo or from acquired melanosis.
• Local recurrences preceded metastases in fatal cases; some patients experienced prolonged local recurrence without metastasis.

Conclusions:

• Conjunctival melanomas originating de novo or from acquired melanosis have a poorer prognosis.
• The pattern of local recurrence preceding metastasis in conjunctival melanoma warrants further investigation.
• Insights from skin melanoma management may be relevant for conjunctival melanoma treatment strategies.