The J-shaped sella sign is a radiologic sign observed on lateral views of skull radiographs as the forward elongation of the sella turcica, and its extension below the anterior clinoid process.[1] This abnormality causes the sella turcica to resemble the letter J. This sign is a normal variant in 5% of children[1], but it is also associated with optic nerve glioma, hydrocephalus, mucopolysaccharidoses, and achondroplasia.[2]
References
edit- ^ a b Wren, M. W. (1969-05-01). "Significance of the so-called J-shaped sella in the diagnosis of intracranial aneurysm". British Journal of Ophthalmology. 53 (5): 307–309. doi:10.1136/bjo.53.5.307. ISSN 0007-1161. PMC 1207361. PMID 4306328.
- ^ Yang, Heewon; Kim, Hyukhoon; Kwak, Jae Ryoung; Choi, Sangchun (2019-05-01). "J-Shaped Sella in a 7-Month-Old Infant". Journal of Emergency Medicine. 56 (5): e89–e90. doi:10.1016/j.jemermed.2018.12.048. ISSN 0736-4679. PMID 30711367.