In the 2022 World Health Organization classification of tumors of the pituitary gland, nonfunctioning PitNETs are classified according to their frequency as silent gonadotroph tumors, silent corticotroph tumors, silent immature PIT1-lineage tumors, null cell tumors, and other tumors 1)
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Wan XY, Chen J, Wang JW, Liu YC, Shu K, Lei T. Overview of the 2022 WHO Classification of Pituitary Adenomas/Pituitary Neuroendocrine Tumors: Clinical Practices, Controversies, and Perspectives. Curr Med Sci. 2022 Dec;42(6):1111-1118. doi: 10.1007/s11596-022-2673-6. Epub 2022 Dec 22. PMID: 36544040.