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Improving outcomes for people with skin tumours including melanoma

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Electrodesiccation<br />

A surgical method of drying out tissue by touching it <strong>with</strong> a needlelike<br />

electrode that passes electric current into the tissue.<br />

Epidemiology<br />

The study of populations in order to determine the frequency and<br />

distribution of disease and to measure risks.<br />

<strong>Improving</strong> Outcomes <strong>for</strong><br />

People <strong>with</strong> Skin Tumours<br />

<strong>including</strong> Melanoma<br />

Appendix 6<br />

Excision<br />

Removal by surgery.<br />

Gorlin’s syndrome<br />

An inherited condition that can increase an individual’s chance of<br />

developing basal cell carcinoma. Also called basal cell nevus<br />

syndrome.<br />

High-risk basal cell carcinoma<br />

Those that have a high recurrence rate after treatment. There are<br />

several factors that may have an effect on recurrence rate <strong>including</strong><br />

histological sub-type, other histological features, site, and other<br />

patient and tumour features.<br />

Histological sub-type<br />

Morphoeic – linear groups of cancer cells <strong>with</strong> surrounding<br />

scarring; clinically this causes a thickened and hardened<br />

<strong>skin</strong><br />

Infiltrating – like morphoeic but <strong>with</strong> less scarring<br />

Micronodular – very small groups of cancer cell<br />

Basosquamous carcinoma – a <strong>skin</strong> cancer <strong>with</strong> both basal<br />

and squamous elements<br />

A6<br />

Histological features<br />

Perineural invasion<br />

Invasion below dermis<br />

Sites<br />

Nose and paranasal folds<br />

Periocular<br />

Ears<br />

Scalp and temples<br />

Lips<br />

Other factors<br />

Size > 2 cm<br />

Immunosuppression<br />

Genetic disorders such as Gorlin’s syndrome<br />

Previously treated lesion<br />

Guidance on cancer services: <strong>skin</strong> <strong>tumours</strong> <strong>including</strong> <strong>melanoma</strong><br />

163

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