Anatomy and radiology of the sellar spine

Dietemann, J L; Lang, Johannes; Francke, J.-P.; Bonneville, Jean‐François; Clarisse, J; Wackenheim, A

doi:10.1007/bf00518787

Cited by 27 publications

(31 citation statements)

References 3 publications

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“…The incidence of this anomaly is low, and is estimated to be 1: 5000 [7] to 1: 8000 [1]. It is believed to be a congenital malformation with incomplete regression of the cephalic tip of the notochord [2,7]. During development of the posterior lobe of the pituitary gland the most cephalad notochordal segment undergoes regression and finally pulls away from the posterior lobe.…”

Section: Discussionmentioning

confidence: 99%

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CT and MRI of sellar spine with upward extension of the pituitary gland: case report

Matsumoto¹,

Uchino²,

Kato³

et al. 1997

Eur Radiol

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This is a report of CT and MRI findings in a patient with a sellar spine which caused deformity of the pituitary gland. The sellar spine is an infrequent anatomical variant characterized by an osseous spine which arises in the midline from the anterior aspect of the dorsum sellae and extends into the pituitary fossa. The CT and MRI findings of sellar spine have been described in previous reports; however, only one investigator reported deformity of the pituitary gland as revealed by CT. This is the first report of the MRI finding of the sellar spine associated with a deformity and superior extension of the pituitary gland, mimicking pituitary hypertrophy.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

CT and MRI of sellar spine with upward extension of the pituitary gland: case report

Matsumoto¹,

Uchino²,

Kato³

et al. 1997

Eur Radiol

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“…The tip of the spine was 1.25 mm in diameter. Dietemann et al [14] described five anatomical and radiological observations of a spine protruding into the pituitary fossa in living patients.…”

Section: Seilar Spinementioning

confidence: 98%

Hypophyseal region — anatomy of the operative approaches

Lang

1985

Neurosurg. Rev.

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Landmarks and measurements for the transnasal approach (apertura piriformis, distance to the apertura sinus sphenoidalis) in children and adults are given. Included is the anatomy of the nasal septum, its vessels and nerves. The ostium of the sphenoid sinus, its development, types and dimensions are described. Also shown are the hypophyseal capsule, the hypophyseal vessels and the hypophyseal fossa with its variations and the sella turcica region with its adjacent dural structures (petroclinoid fold, diaphragma sellae, aperture for the internal carotid artery and pituitary cistern). For the intracranial approaches the arterial circle and its branches are important for neurosurgeons. The location, number, width and course of these branches are described. Distances and the most important vessels, which are seen by frontal, frontolateral and pterional approaches, are described.

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“…L'épine sellaire est une anomalie congénitale due à une involution incomplète de l'extrémité crâniale de la notochorde, responsable de la persistance d'un éperon osseux naissant de la face antérieure du dos de la selle et se dirigeant en avant et vers le haut en intrasellaire [2,4]. Elle est souvent asymptomatique et de découverte fortuite.…”

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“…Le diagnostic d'épine sellaire est facile en scanner devant la présence d'un éperon osseux naissant à la face antérieure du dorsum sellaire, à orientation antérosupé-rieure [4][5][6]. En IRM, le signal de l'épine sellaire est variable et dépend de sa taille et de sa composition : les épines de petite taille, composées d'os cortical, sont en hyposignal sur toutes les pondérations alors que les volumineux épe-rons peuvent contenir de la moelle osseuse et apparaître en hypersignal T1 [3].…”

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