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.
 Imaging Findings for Choristoma
- 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.
 See Also
 External Links
 References for Choristoma
- Sahar N. Saleem, Ahmed-Hesham M. Said, and Donald H. Lee. Lesions of the Hypothalamus: MR Imaging Diagnostic Features. RadioGraphics 2007 27: 1087-1108.