Skip to main content
. 2023 Feb 24;41(8):789–806. doi: 10.1007/s11604-023-01400-7

Table 2.

Pituitary neuroendocrine tumor (PitNET)/pituitary adenoma as described by WHO classification of 4th and 5th edition

Tumors of the central nervous system Central nervous system tumors
Edition 4th 5th
Issue year 2016 2021
Terminology Not listed Pituitary adenoma/Pituitary neuroendocrine tumor (PitNET)
Definition Clonal neoplastic proliferation of anterior pituitary hormone-producing cell
ICD-O coding 8272/3 (3: primary malignant tumor)
Tumor of endocrine organs Endocrine and neuroendocrine tumors
Edition 4th 5th
Issue year 2017 2022
Terminology Pituitary adenoma Pituitary neuroendocrine tumor (PitNET)
Definition Neoplastic proliferation of anterior pituitary hormone-producing cells Defined for each type
ICD-O coding 8272/0 (0: benign tumor) 8272/3 (3: primary malignant tumor)