Histologic Study of the Growth of the Subglottis after Interruption of the Circular Structure of the Cricoid
作者:
F.C.P.M. Adriaansen,
H.L. Verwoerd-Verhoef,
R.O. van der Heul,
C.D.A. Verwoerd,
期刊:
ORL
(Karger Available online 1988)
卷期:
Volume 50,
issue 2
页码: 94-102
ISSN:0301-1569
年代: 1988
DOI:10.1159/000275976
出版商: S. Karger AG
关键词: Larynx;Laryngeal growth;Subglottic stenosis;Laryngeal trauma;Conus elasticus;Chondroneogenesis
数据来源: Karger
摘要:
In a previous study in growing rabbits it was demonstrated that after resection of a ventral part of the cricoid the lumen of the subglottic airway developed normal size during further growth up to the adult stage. Histologic investigations of these cases suggest that a subepithelial network of elastic fibres, ventrally suspended to the thyroid and the tracheal rings, ensures the airway lumen and prevents the development of a subglottic stenosis. Resection of a ventral part of the cricoid including the adjacent soft tissue lining of the airway causes an irreversible loss of the supporting elastic layer and the formation of scar tissue resulting in a stenosis. It was concluded that the larynx and trachea can be considered as an inner, elastic tube (= conus elasticus) lined with epithelium, suspended to an outer, segmented cartilaginous tube. At the level of the subglottis an intact conus elasticus is of more importance for the normal development of the airway lumen in young rabbits than an intact ventral half of the cricoid ring.
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