SKIN TUMOURS

Introductory Notes

The classifications apply to carcinomas of the skin, [excluding vulva (see Gynaecological Tumours), and penis (see Urological Tumours), and perianal skin (see Gastrointestinal Tumours)], to malignant melanomas of the skin including eyelid and to Merkel cell carcinoma.

Anatomical Sites

The following sites are identified by ICD‐O‐3 topography rubrics:

Lip (excluding vermilion surface) (C44.0)
Eyelid (C44.1)
External ear (C44.2)
Other and unspecified parts of face (C44.3)
Scalp and neck (C44.4)
Trunk excluding anal margin and perianal skin (C44.5)
Upper limb and shoulder (C44.6)
Lower limb and hip (C44.7)
Scrotum (C63.2)

Regional Lymph Nodes (Figs. 322, 323)

The regional lymph nodes are those appropriate to the site of the primary tumour.

Unilateral Tumours

Head, neck: Ipsilateral preauricular, submandibular, cervical, and supraclavicular lymph nodes
Thorax: Ipsilateral axillary lymph nodes
Upper limb: Ipsilateral epitrochlear and axillary lymph nodes
Abdomen, loins, and buttocks: Ipsilateral inguinal lymph nodes
Lower limb: Ipsilateral popliteal and inguinal lymph nodes
Anal margin and perianal skin: Ipsilateral inguinal lymph nodes