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WHO Classification of Tumours
WHO Classification of Endocrine Tumours
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Ronald A. DeLellis, Ricardo V. Lloyd, Philipp U. Heitz, Charis Eng
World Health Organization Classification of Tumours. Pathology and Genetics of Tumors of Endocrine Organs
IARC Press: Lyon 2004

C73 - Thyroid gland:
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

    8260/3 Papillary adenocarcinoma, NOS
    8330/3 Follicular carcinoma, NOS
    8020/3 Undifferentiated carcinoma
    8070/3 Squamous cell carcinoma, NOS
    8430/3 Mucoepidermoid carcinoma
    8480/3 Mucinous adenocarcinoma
    8345/3 Medullary thyroid carcinoma
    8346/3 Mixed medullary-follicular carcinoma
    8588/3 Spindle epithelial tumor with thymus-like element
    8589/3 Carcinoma showing thymus-like element

    8330/0 Follicular adenoma
    8336/0 Hyalinizing trabecular adenoma

Other tumors
    9080/1 Teratoma, NOS
    8580/1 Thymoma, NOS
    9120/3 Angiosarcoma
    8693/1 Paraganglioma
    8815/0 Solitary fibrous tumor
    9758/3 Follicular dendritic cell sarcoma
    9751/3 Langerhans cell histiocytosis