Adrenal gland & paraganglia
WHO classification

Topic Completed: 1 July 2018

Minor changes: 4 July 2020

Copyright: 2002-2020,, Inc.

PubMed Search: WHO classification of adrenal gland tumors

Andrey Bychkov, M.D., Ph.D.
Page views in 2020 to date: 496
Cite this page: Bychkov A. WHO classification. website. Accessed October 24th, 2020.
Definition / general
  • This classification is applicable to tumors that occur in the adrenal gland
WHO (2017)

  • ICD-O note: the first four digits indicate the specific histological term; the fifth digit after the slash (/) is the behavior code, including /0 for benign tumors, /1 for unspecified, borderline or uncertain behavior, /2 for carcinoma in situ and grade III intraepithelial neoplasia (not used for adrenal tumors), and /3 for malignant tumors
  • Board review style question #1
    Which of these tumors arises from within the adrenal gland?

    1. Carotid body paraganglioma
    2. Jugulotympanic paraganglioma
    3. Laryngeal paraganglioma
    4. Pheochromocytoma
    5. Vagal paraganglioma
    Back to top
    Image 01 Image 02