American Journal of Roentgenology, Vol 159, 1269-1271, Copyright © 1992 by American Roentgen Ray Society

ARTICLES

Congenital subglottic hemangioma: frequency of symmetric subglottic narrowing on frontal radiographs of the neck

M Cooper, TL Slovis, DN Madgy and D Levitsky
Department of Pediatric Imaging, Children's Hospital of Michigan, Detroit 48201-9985.

OBJECTIVE. This study was undertaken to determine how often symmetric subglottic airway narrowing is present in cases of infantile subglottic stenosis and to determine if the radiographic finding has any association with the anatomic location of the hemangioma. MATERIALS AND METHODS. All cases (n = 12) of endoscopically proved subglottic hemangioma from 1976 to 1991 were collected from the records at Children's Hospital of Michigan. In 10 cases, high-kilovoltage magnification studies or frontal radiographs of the neck were available for review by two observers who classified the subglottic narrowing as either symmetric or asymmetric. The radiographic findings in these 10 cases were then compared with the location and extent of the lesion as described endoscopically. RESULTS. In 50% of cases (n = 5), narrowing of the subglottic airway was symmetric. In four of these the hemangioma was either situated on the posterior wall or was circumferential, and in the remaining one an associated marked fibrotic reaction to a lateral wall lesion was present. All other lesions were on the lateral wall, and asymmetric subglottic airway narrowing was consistently shown on radiographs. CONCLUSION. Our results show that subglottic hemangioma often manifests as a symmetric subglottic airway narrowing and that the anatomic location of the hemangioma appears to be associated with the appearance on radiographs.
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