Info

Benign epithelial tumours

Pleomorphic adenoma 8940/0

Myoepithelioma 8982/0

1 Morphology code of the International Classification of Diseases for Oncology (ICD-O) {821} and the Systematized Nomenclature of Medicine (http://snomed.org). Behaviour is coded /0 for benign tumours, /3 for malignant tumours, and /1 for borderline or uncertain behaviour.

TNM classification of carcinomas of the salivary glands

TNM classification 1,2

T - Primary tumour

TX Primary tumour cannot be assessed

TO No evidence of primary tumour

T1 Tumour 2 cm or less in greatest dimension without extraparenchymal extension* T2 Tumour more than 2 cm but not more than 4 cm in greatest dimension without extraparenchymal extension* T3 Tumour more than 4 cm and/or tumour with extraparenchymal extension*

T4a Tumour invades skin, mandible, ear canal, or facial nerve T4b Tumour invades base of skull, pterygoid plates, or encases carotid artery

Note: *Extraparenchymal extension is clinical or macroscopic evidence of invasion of soft tissues or nerve, except those listed under T4a and 4b. Microscopic evidence alone does not constitute extraparenchymal extension for classification purposes.

N - Regional lymph nodes##

NX Regional lymph nodes cannot be assessed

NO No regional lymph node metastasis

N1 Metastasis in a single ipsilateral lymph node, 3 cm or less in greatest dimension N2 Metastasis as specified in N2a, 2b, 2c below N2a Metastasis in a single ipsilateral lymph node, more than 3 cm but not more than 6 cm in greatest dimension N2b Metastasis in multiple ipsilateral lymph nodes, none more than 6 cm in greatest dimension

N2c Metastasis in bilateral or contralateral lymph nodes, none more than 6 cm in greatest dimension N3 Metastasis in a lymph node more than 6 cm in greatest dimension

Note: Midline nodes are considered ipsilateral nodes.

M - Distant metastasis MX Distant metastasis cannot be assessed M0 No distant metastasis M1 Distant metastasis

Stage Grouping

Stage I

T,

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