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Ophthalmic Tumours

Carcinoma of Conjunctiva (ICD‐O‐3 C 69.0) Rules for Classification There should be histological confirmation of the disease and division of cases by histological type, for example, mucoepidermoid and squamous cell carcinoma.

The following are the procedures for assessing T, N, and M categories: T categories Physical examination N categories Physical examination M categories Physical examination and imaging

Regional Lymph Nodes The regional lymph nodes are the preauricular, submandibular and cervical lymph nodes.

TNM Clinical Classification T – Primary Tumour TX Primary tumour cannot be assessed T0 No evidence of primary tumour Tis Carcinoma in situ T1 Tumour 5 mm or less in greatest dimension invades through the ­conjuctival basement membrane T2 Tumour more than 5 mm in greatest dimension, invades through the conjuctival basement membrane without invasion of adjacent structures* T3 Tumour invades adjacent structures* T4 Tumour invades the orbit or beyond T4a Tumour invades orbital soft tissues, without bone invasion T4b Tumour invades bone T4c Tumour invades adjacent paranasal sinuses T4d Tumour invades brain

Carcinoma of Conjunctiva

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Note * Adjacent structures include: the cornea (3, 6, 9, or 12 clock hours), intraocular compartments, forniceal conjunctiva (lower and/or upper), palpebral conjunctiva (lower and/or upper), tarsal conjunctiva (lower and/or upper), lacrimal punctum and canaliculi (lower and/or upper), plica, caruncle, posterior eyelid lamella, anterior eyelid lamella and/or eyelid margin (lower and/or upper).

N – Regional Lymph Nodes NX Regional lymph nodes cannot be assessed N0 No regional lymph node metastasis N1 Regional lymph node metastasis

M – Distant Metastasis M0 No distant metastasis M1 Distant metastasis

The pT and pN categories correspond to the T and N categories. For pM see page 8.

Stage No stage is at present recommended.

Ophthalmic

pTNM Pathological Classification