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WHO Classification of Tumours
WHO Classification of Head and Neck Tumours
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Barnes L, Eveson JW, Reichart P, Sidransky D (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Head and Neck Tumours.
3rd Edition
IARC Press: Lyon 2005

C13, C32, C33 - Hypopharynx, Larynx and Trachea:
The number attached to each tumour is the ICD-O morphology code of the International Classification of Diseases for Oncology (ICD-O) [1] and the Systematized Nomenclature of Medicine (http://snomed.org).
/0 benign tumours
/1 unspecified, borderline or uncertain behaviour
/2 in situ carcinomas
/3 malignant tumours.

1. Fritz A, Percy C, Jack A, Shanmuragatnam K, Sobin LH, Parkin DM, Whelan S (Eds) International Classification of Diseases for Oncology. World Health Organization: Geneva 2000

Malignant epithelial tumors
    8070/3 Squamous cell carcinoma, NOS
        8051/3 Verrucous carcinoma, NOS
        8083/3 Basaloid squamous cell carcinoma
        8052/3 Papillary squamous cell carcinoma
        8074/3 Squamous cell carcinoma, spindle cell
        8075/3 Acantholytic squamous cell carcinoma,
        8560/3 Adenosquamous carcinoma
    8082/3 Lymphoepithelial carcinoma
    8031/3 Giant cell carcinoma
    8430/3 Mucoepidermoid carcinoma
    8200/3 Adenoid cystic carcinoma

Neuroendocrine tumors
    8240/3 Neuroendocrine tumor G1 (NET G1) / Carcinoid
    8249/3 Neuroendocrine tumor G2 (NET G2)
    8041/3 Small cell neuroendocrine carcinoma
    8045/3 Combined small cell carcinoma

Benign epithelial tumors
    8050/0 Papilloma, NOS
    8060/0 Squamous papillomatosis
    8940/0 Pleomorphic adenoma
    8290/0 Oncocytoma

Soft tissue tumors
    Malignant tumors
        8810/3 Fibrosarcoma, NOS
        8830/3 Malignant fibrous histiocytoma
        8850/3 Liposarcoma, NOS
        8890/3 Leiomyosarcoma, NOS
        8900/3 Rhabdomyosarcoma, NOS
        9120/3 Angiosarcoma
        9140/3 Kaposi sarcoma
        9040/3 Synovial sarcoma, NOS

    Borderline tumors / LMP
        8825/1 Inflammatory myofibroblastic tumor

    Benign tumors
        9560/0 Schwannoma, NOS
        9540/0 Neurofibroma, NOS
        8850/0 Lipoma, NOS
        8890/0 Leiomyoma, NOS
        8900/0 Rhabdomyoma, NOS
        9120/0 Hemangioma, NOS
        9170/0 Lymphangioma, NOS
        9580/0 Granular cell tumor, NOS

Tumors of bone and cartilage
    9220/3 Chondrosarcoma, NOS
    9180/3 Osteosarcoma, NOS
    9220/0 Chondroma, NOS
    9250/1 Giant cell tumor of bone, NOS

8720/3 Melanoma, NOS