Choristoma

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[edit] Discussion of Choristoma

  • AKA infundibuloma and granular cell tumor.
  • Choristomas are distinctive low-grade gliomas arising along the distribution of the neurohypophysis (including both the infundibular stalk and the posterior lobe of the pituitary gland).
  • Choristomas are rare tumors (only about 70 cases have been reported in the literature).
  • Commonly manifest during the fourth or fifth decade of life.
  • Female predilection of 2:1.
  • Choristomas are benign and slow growing with no pronounced tendency for invasion or recurrence.

[edit] Imaging Findings for Choristoma

[edit] MRI

  • Well-defined masses in the suprasellar cistern, in the sella, or in both
  • Signal intensity characteristics vary depending on the presence of cystic components.
  • Solid parts of the tumor are isointense relative to the brain on T1- and T2-weighted images and display inhomogeneous contrast enhancement.

[edit] Images

Patient #1

[edit] See Also

[edit] External Links

Goldminer: Choristoma

[edit] References for Choristoma