Adrenal gland and paraganglia
Other benign cortical lesions

Author: Nat Pernick, M.D. (see Authors page)

Revised: 21 Janaury 2016, last major update February 2005

Copyright: (c) 2002-2016,, Inc.

PubMed Search: Cysts [title] adrenal

Related: Endothelial (vascular) cyst, Hemorrhagic cyst (pseudocyst), Lymphangioma, Parasitic cyst
Definition / General
  • May produce mass or flank pain, or incidental finding on MRI or CT scans
  • Incidence of 0.06% at autopsy
  • Usually women
Case Reports
Gross Description
  • Up to 30 cm, usually unilateral with irregular thick fibrous wall and calcifications
  • Often yellow, residual adrenocortical tissue in wall
Differential Diagnosis
See also
Bronchogenic cyst in retroperitoneum

Epithelial lined (true) cyst
  • General
    • May be derived from mesothelial structures
    • Either retention cysts, embryonal cysts or arising within adrenocortical adenomas (Hum Pathol 1989;20:491)
  • Micro description
    • Single layer of keratin+ cells