Carcinoma of Skin of the Eyelid
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Carcinoma of Skin of the Eyelid (ICD‐O C44.1)
There should be histological confirmation of the disease and division of cases by histological type – for example, basal cell, squamous cell, sebaceous carcinoma. Melanoma of the eyelid is classified with skin tumours, see page 142. The following are 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 T0 No evidence of primary tumour Tis Carcinoma in situ
T1 Tumour 10 mm or less in greatest dimension T1a Not invading the tarsal plate or eyelid margin T1b Invades tarsal plate or eyelid margin T1c Involves full thickness of eyelid T2 Tumour >10 mm, but 20 mm or less in greatest dimension T2a Not invading the tarsal plate or eyelid margin T2b Invades the tarsal plate or eyelid margin T2c Involves full thickness of eyelid T3 Tumour > 20 mm, but more than 30 mm in greatest dimension T3a Not invading the tarsal plate or eyelid margin T3b Invades tarsal plate or eyelid margin T3c Involves full thickness of eyelid
Skin
Rules of Classification