• Clusters of multipolar neurons surrounded by a capsule of loosely organized CONNECTIVE TISSUE located outside the CENTRAL NERVOUS SYSTEM.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• (ganglion) A cluster of nervous tissue principally composed of neuronal cell bodies external to the central nervous system (CNS).
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• (ganglion) Any group of sensory or autonomic nerve cell bodies located outside the central nervous system.
  CRISP Thesaurus
  National Institutes of Health, 2006
• (ganglion) Subdivision of neural tree (organ) which primarily consists of cell bodies of neurons located outside the neuraxis (brain and spinal cord); together with a nucleus and its associated nerve, it constitutes a neural tree (organ). Examples: spinal ganglion, trigeminal ganglion, superior cervical ganglion, celiac ganglion, inferior hypogastric (pelvic) ganglion.
  Digital Anatomist
  University of Washington, 2003
• Ganglia are cystic swellings occurring usually on the hands, especially on the dorsal aspect of the wrists. Aspiration or excision is indicated for symptomatic ganglia.
  Merck Manuals
  Merck & Co., Inc., 2020