A Giant Secondary Orbital Melanoma

Area of Science:

• Ophthalmology
• Oncology
• Pathology

Background:

• Secondary orbital melanomas are malignant pigmented tumors with varied origins.
• Choroidal melanoma is the most common primary tumor, spreading to the orbit via scleral channels or the optic nerve.
• These tumors are pathologically characterized by highly invasive and metastatic epithelial cells.

Purpose of the Study:

• To report a rare case of massive orbital melanoma secondary to primary choroidal melanoma.
• To emphasize the diagnostic and therapeutic challenges associated with orbital melanomas.
• To contribute to the understanding of the metastatic pathways of choroidal melanomas.

Main Methods:

• Surgical intervention, specifically enucleation of orbital contents with eyelid preservation, is the primary treatment.
• Chemotherapy and radiation therapy are typically used as adjuvant treatments.
• Diagnostic imaging and histopathological examination are crucial for accurate diagnosis.

Main Results:

• The case presented a rare instance of extensive orbital melanoma following a primary choroidal melanoma.
• The tumor exhibited characteristics of highly invasive and metastatic epithelial cells.
• Successful management involved a multidisciplinary approach including surgery, chemotherapy, and radiation.

Conclusions:

• Orbital melanomas, though rare, require prompt diagnosis and aggressive management.
• Enucleation combined with adjuvant therapies offers a standard treatment approach.
• Further research is needed to explore novel therapeutic strategies for metastatic orbital melanomas.