Atlantooccipital assimilation associated with combined atlas arch defect: a radiological case report

Athikhun Suwannakhan; Pannawat Trerattanavong; Laphatrada Yurasakpong; Woranan Kirisattayakul; Nutmethee Kruepunga; Kiarttiyot Tuntiseranee; Kanitin Rumpansuwon; Thanyaporn Senarai

doi:10.5115/acb.23.281

Atlantooccipital assimilation associated with combined atlas arch defect: a radiological case report

Athikhun Suwannakhan
, Pannawat Trerattanavong
, Laphatrada Yurasakpong
, Woranan Kirisattayakul
, Nutmethee Kruepunga
, Kiarttiyot Tuntiseranee
, Kanitin Rumpansuwon
, Thanyaporn Senarai^*

^*Corresponding author for this work

Biomedical Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

In this report, atlantooccipital assimilation (AS), anterior arch defect (AAD), and posterior arch defect (PAD) of the atlas, and several variations around the craniocervical junction were identified on computed tomography (CT) of a patient of unknown sex and age. Coronal and sagittal CT scans showed AS and bilateral fusion of the atlas and the base of occipital bone. Axial CT scan at the atlas revealed PAD type B on the left side and midline AAD. Morphometric measurements indicated a potential ventral spinal cord compression. In addition, mid-sagittal CT revealed the presence of fossa navicularis magna and incomplete formation of the transverse foramen on the right side. This study reports an extremely rare AS associated with AAD, PAD, and other variations of the clivus and the atlas. To our knowledge, no similar case has been reported in the literature.

Original language	English
Pages (from-to)	468-472
Number of pages	5
Journal	Anatomy and Cell Biology
Volume	57
Issue number	3
DOIs	https://doi.org/10.5115/acb.23.281
Publication status	Published - 30 Sept 2024

Bibliographical note

Publisher Copyright:
Copyright © 2024. Anatomy & Cell Biology

Keywords

Anatomic variation
Cervical atlas
Cervical vertebrae
Klippel-Feil syndrome
Skull base

ASJC Scopus subject areas

Anatomy
Histology
Developmental Biology
Cellular and Molecular Neuroscience
Cell Biology

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Cite this

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title = "Atlantooccipital assimilation associated with combined atlas arch defect: a radiological case report",

abstract = "In this report, atlantooccipital assimilation (AS), anterior arch defect (AAD), and posterior arch defect (PAD) of the atlas, and several variations around the craniocervical junction were identified on computed tomography (CT) of a patient of unknown sex and age. Coronal and sagittal CT scans showed AS and bilateral fusion of the atlas and the base of occipital bone. Axial CT scan at the atlas revealed PAD type B on the left side and midline AAD. Morphometric measurements indicated a potential ventral spinal cord compression. In addition, mid-sagittal CT revealed the presence of fossa navicularis magna and incomplete formation of the transverse foramen on the right side. This study reports an extremely rare AS associated with AAD, PAD, and other variations of the clivus and the atlas. To our knowledge, no similar case has been reported in the literature.",

keywords = "Anatomic variation, Cervical atlas, Cervical vertebrae, Klippel-Feil syndrome, Skull base",

author = "Athikhun Suwannakhan and Pannawat Trerattanavong and Laphatrada Yurasakpong and Woranan Kirisattayakul and Nutmethee Kruepunga and Kiarttiyot Tuntiseranee and Kanitin Rumpansuwon and Thanyaporn Senarai",

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year = "2024",

month = sep,

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doi = "10.5115/acb.23.281",

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T2 - a radiological case report

AU - Suwannakhan, Athikhun

AU - Trerattanavong, Pannawat

AU - Yurasakpong, Laphatrada

AU - Kirisattayakul, Woranan

AU - Kruepunga, Nutmethee

AU - Tuntiseranee, Kiarttiyot

AU - Rumpansuwon, Kanitin

AU - Senarai, Thanyaporn

PY - 2024/9/30

Y1 - 2024/9/30

N2 - In this report, atlantooccipital assimilation (AS), anterior arch defect (AAD), and posterior arch defect (PAD) of the atlas, and several variations around the craniocervical junction were identified on computed tomography (CT) of a patient of unknown sex and age. Coronal and sagittal CT scans showed AS and bilateral fusion of the atlas and the base of occipital bone. Axial CT scan at the atlas revealed PAD type B on the left side and midline AAD. Morphometric measurements indicated a potential ventral spinal cord compression. In addition, mid-sagittal CT revealed the presence of fossa navicularis magna and incomplete formation of the transverse foramen on the right side. This study reports an extremely rare AS associated with AAD, PAD, and other variations of the clivus and the atlas. To our knowledge, no similar case has been reported in the literature.

AB - In this report, atlantooccipital assimilation (AS), anterior arch defect (AAD), and posterior arch defect (PAD) of the atlas, and several variations around the craniocervical junction were identified on computed tomography (CT) of a patient of unknown sex and age. Coronal and sagittal CT scans showed AS and bilateral fusion of the atlas and the base of occipital bone. Axial CT scan at the atlas revealed PAD type B on the left side and midline AAD. Morphometric measurements indicated a potential ventral spinal cord compression. In addition, mid-sagittal CT revealed the presence of fossa navicularis magna and incomplete formation of the transverse foramen on the right side. This study reports an extremely rare AS associated with AAD, PAD, and other variations of the clivus and the atlas. To our knowledge, no similar case has been reported in the literature.

KW - Anatomic variation

KW - Cervical atlas

KW - Cervical vertebrae

KW - Klippel-Feil syndrome

KW - Skull base

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DO - 10.5115/acb.23.281

M3 - Article

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SN - 2093-3665

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SP - 468

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JO - Anatomy and Cell Biology

JF - Anatomy and Cell Biology

IS - 3

ER -

Atlantooccipital assimilation associated with combined atlas arch defect: a radiological case report

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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