TY - JOUR
T1 - New barriers to ventricular invasion in paraglottic laryngeal cancer
AU - Beitler, Jonathan J.
AU - Mahadevia, Panna S.
AU - Silver, Carl E.
AU - Wadler, Scott
AU - Rubin, John S.
AU - Bello, Jacqueline A.
AU - Mitnick, Robin J.
AU - Vikram, Bhadrasain
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1994/5/15
Y1 - 1994/5/15
N2 - Background. Anatomic barriers to the spread of laryngeal cancer include the conus elasticus, the quadrangular membrane, and the thyroid cartilage. It has been speculated that an elastic barrier surrounds and protects the ventricle. Methods. The authors studied the microanatomic patterns of spread of 17 cases of patients who had laryngeal cancer with paraglottic disease and confirmed their findings by examining normal autopsy specimens. Results. Five patients of the seventeen cases showed no ventricular mucosal involvement despite extensive paraglottic disease. Both an inner, central, subepithelial periventricular elastic barrier, and a more peripheral periventricular elastic membrane barrier were identified; the latter was in continuity with the conus elasticus and quadrangular membrane. Conclusions. Two weak fibroelastic barriers surround the ventricle. The outer, peripheral, fibroelastic membrane is contiguous with the conus elasticus and the quadrangular membrane. Therefore, ventricular involvement is not a sensitive indicator of paraglottic spread. Squamous cell cancer may grow around the periventricular barriers to involve both the true and false cords but may spare the ventricle. The prognostic significance of the violation or preservation of the periventricular elastic barriers is unknown.
AB - Background. Anatomic barriers to the spread of laryngeal cancer include the conus elasticus, the quadrangular membrane, and the thyroid cartilage. It has been speculated that an elastic barrier surrounds and protects the ventricle. Methods. The authors studied the microanatomic patterns of spread of 17 cases of patients who had laryngeal cancer with paraglottic disease and confirmed their findings by examining normal autopsy specimens. Results. Five patients of the seventeen cases showed no ventricular mucosal involvement despite extensive paraglottic disease. Both an inner, central, subepithelial periventricular elastic barrier, and a more peripheral periventricular elastic membrane barrier were identified; the latter was in continuity with the conus elasticus and quadrangular membrane. Conclusions. Two weak fibroelastic barriers surround the ventricle. The outer, peripheral, fibroelastic membrane is contiguous with the conus elasticus and the quadrangular membrane. Therefore, ventricular involvement is not a sensitive indicator of paraglottic spread. Squamous cell cancer may grow around the periventricular barriers to involve both the true and false cords but may spare the ventricle. The prognostic significance of the violation or preservation of the periventricular elastic barriers is unknown.
KW - conus elasticus
KW - paraglottic larynx cancer
KW - quadrangular membrane
KW - squamous cell cancer of larynx; larynx‐microanatomy
KW - transglottic cancer
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U2 - 10.1002/1097-0142(19940515)73:10<2648::AID-CNCR2820731029>3.0.CO;2-D
DO - 10.1002/1097-0142(19940515)73:10<2648::AID-CNCR2820731029>3.0.CO;2-D
M3 - Article
C2 - 8174065
AN - SCOPUS:0028238835
SN - 0008-543X
VL - 73
SP - 2648
EP - 2652
JO - Cancer
JF - Cancer
IS - 10
ER -