Arch of cricoid cartilage anatomical variation: morphological and radiological aspects
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The cricoid cartilage serves as an anatomical reference for several surgical procedures for access to the airway. Additionally, it serves as an attachment point for muscles that move the vocal folds. We present a case where the cricoid cartilage arch is divided into distinct superior and inferior arches, with a fibrous membrane between them. We did not find any similar description to this case in the literature, which makes it unique to date. This type of variation is important knowledge for clinicians and surgeons during airway management in the anterior neck region. The presence of this variation could induce an error during a palpation of the thyroid and cricoid cartilages, realized in clinical examination and surgical or emergency procedures.
KeywordsArch of cricoid cartilage Anatomical variation Magnetic resonance image Morphology
The authors would like to express their most sincere gratitude to Professor José Carlos Prates for his invaluable contribution.
SAGJ: conception and design study, case analysis and manuscript writing. PRR: data collection. BML: design study and review article. SRM: data collection and interpretation of data. LAA-A: revising it critically for important intellectual content. LOCM: conception and design study, case analysis and manuscript writing.
Compliance with ethical standards
Conflict of interest
The authors declare no potential conflict of interest.
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