CONJUNCTIVAL TUMOURS 1. Benign 2. Pre-malignant 3. Malignant Naevus

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Presentation transcript:

CONJUNCTIVAL TUMOURS 1. Benign 2. Pre-malignant 3. Malignant Naevus Papilloma Epibulbar dermoid Lipodermoid 2. Pre-malignant Primary acquired melanosis ( PAM ) Intraepithelial neoplasia (carcinoma in situ) 3. Malignant Melanoma Squamous cell carcinoma Kaposi sarcoma Lymphoma

Naevus Presents in first two decades Most frequently juxtalimbal Sharply demarcated and slightly elevated 30% are almost non-pigmented

Papilloma Pedunculated Sessile Presents in childhood or early adulthood Presents in middle age Infection with papilloma virus Not caused by infection May be multiple and bilateral Single and unilateral

Epibulbar dermoid Signs Association Presents in childhood Occasionally Goldenhar syndrome Smooth, soft mass Usually juxtalimbal

Lipodermoid Presents in adulthood Soft, movable, subconjunctival mass Most frequently at outer canthus

Intraepithelial neoplasia (carcinoma in situ) Signs Progression Presents in late adulthood May become vascular and extend onto cornea Malignant transformation is uncommon Juxtalimbal fleshy avascular mass

Primary acquired melanosis (PAM) Signs Types Presents in late adulthood PAM without atypia is benign Unilateral, irregular areas of flat, brown pigmentation PAM with atypia is pre-malignant May involve any part of conjunctiva

Conjunctival melanoma From PAM with atypia From naevus Primary Most common type Very rare Solitary nodule Sudden appearance of nodules in PAM Sudden increase in size or pigmentation Frequently juxtalimbal but may be anywhere

Treatment of conjunctival melanoma Localized tumour Diffuse tumour Orbital recurrence Excision Excision of nodules Excision and radiotherapy Adjunctive cryotherapy Adjunctive cryotherapy or mitomycin C Exenteration

Squamous cell carcinoma Signs Progression Arises from intraepithelial neoplasia or de novo Slow-growing May spread extensively Presents in late adulthood Rarely metastasizes Frequently juxtalimbal

Kaposi sarcoma Affects patients with AIDS Vascular, slow-growing tumour of low malignancy Very sensitive to radiotherapy Most frequently in inferior fornix

Lymphoma Usually presents in adulthood Benign or malignant Salmon-coloured, subconjunctival infiltrate