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J shaped sella

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Radiologic sign

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. This abnormality causes the sella turcica to resemble the letter J. This sign is a normal variant in 5% of children, but it is also associated with optic nerve glioma, hydrocephalus, mucopolysaccharidoses, and achondroplasia.

References

  1. ^ 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.
  2. 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.


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