J-shaped sella

Last revised by Dr Joshua Yap on 13 Jul 2022

A J-shaped sella is a variant morphology of the sella turcica, whereby the tuberculum sellae is flattened, thus forming the straight edge of the "J". The dorsum sellae remains rounded and forms the loop of the "J".

Differential diagnosis

Differential diagnosis for a J-shaped sella includes 1,2:

Mnemonics

CONMAN 
MAN PHON

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Cases and figures

  • Case 1: mucopolysaccharidosis
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  • Case 2: mucopolysaccharidosis
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  • Case 3: simple pituitary cyst
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  • Case 3: achondroplasia
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