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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

C75.1 - Pituitary 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

8272/0 Growth hormone producing adenoma
8272/0 Prolactin producing adenoma
8272/0 TSH producing adenoma
8272/0 ACTH producing adenoma
8272/1 Atypical adenoma
8272/3 Pituitary carcinoma, NOS

9432/1 Pituicytoma
8290/0 Spindle cell oncocytoma
9582/0 Granular cell tumor of the sellar region