C69.1

Clinical Causes: Genetic mutations leading to uncontrolled cell growth in the corneal tissue. Exposure to ultraviolet radiation, which can damage DNA and increase cancer risk. Chronic irritation or inflammation of the cornea. History of eye injuries or repeated trauma to the eye. Pre-existing benign eye lesions that may undergo malignant transformation. Extended use of certain medications or exposure to carcinogenic substances.

Key Symptoms: Unusual growth or mass on the surface of the cornea. Persistent eye redness or inflammation. Vision changes, including blurriness or decreased visual acuity. Sensation of a foreign body or irritation in the eye. Discoloration or pigmented lesions on the corneal surface. Discomfort or pain localized to the affected eye. Thinning or ulceration of the corneal tissue in advanced cases.

Diagnosis Path: Diagnosis involves a comprehensive eye examination by an ophthalmologist, including detailed slit-lamp microscopy to visualize the lesion. A biopsy of the corneal lesion is often performed to confirm malignancy, involving removing a small tissue sample for histopathological analysis. Additional imaging techniques such as anterior segment optical coherence tomography (OCT), ultrasound biomicroscopy, or MRI may be used to assess the extent of the tumor and check for any spread beyond the cornea. Differential diagnosis considers benign corneal lesions and other eye conditions presenting similar symptoms.

Treatment Protocols: Treatment options are tailored based on the size, location, and stage of the tumor, as well as patient-specific factors. Approaches may include: - Surgical excision: Removal of the tumor through local excision or more extensive procedures like keratoplasty (corneal transplant) if necessary. - Cryotherapy: Applying extreme cold to destroy cancerous tissue. - Topical chemotherapy: Use of anti-cancer eye drops such as mitomycin C, although this is generally reserved for superficial lesions. - Radiotherapy: External beam radiation may be considered for advanced or invasive tumors. - Enucleation: Removal of the entire eye, typically in cases where the tumor is extensive and vision preservation is not feasible. Post-treatment follow-up is crucial to monitor for recurrence or metastasis. Multi-disciplinary management involving ophthalmologists, oncologists, and radiologists ensures comprehensive care and optimal outcomes.