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Overgrowth of costal cartilage is not the etiology of pectus excavatum.
MedLine Citation:
PMID:  20920721     Owner:  NLM     Status:  In-Process    
PURPOSE: The etiology of pectus excavatum (PE) has not been clarified. In 1944, Sweet (Sweet RH. Pectus excavatum. Ann Surg 1944;119:922-934) mentioned about the possibility of the overgrowth of costal cartilage being involved. However, no additional report that supports his hypothesis is available. In this study, we investigated whether the overgrowth of costal cartilage was an actual cause of PE through measurement of the costal cartilage length in PE patients and healthy controls.
MATERIALS AND METHODS: We investigated the length of the fifth and sixth costal cartilages and ribs in PE patients from reconstructed images of 3-dimensional computed tomography. To examine the relative costal cartilage length, we calculated the C/R ratio, defined as the quotient of the costal cartilage length divided by the adjacent rib length, and compared it between PE patients and healthy controls.
RESULTS: In PE patients, the C/R ratios were not larger than in healthy controls at any level. At the left sixth, the C/R ratio was significantly smaller in patients than in the healthy control group.
DISCUSSION: The results revealed that, in PE patients, relative costal cartilage lengths were not longer than in healthy controls. We conclude that the overgrowth of costal cartilage is not the etiology of PE.
Tatsuo Nakaoka; Sadashige Uemura; Tatsuyuki Yoshida; Terutaka Tanimoto; Hiromu Miyake
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of pediatric surgery     Volume:  45     ISSN:  1531-5037     ISO Abbreviation:  J. Pediatr. Surg.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-10-05     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0052631     Medline TA:  J Pediatr Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2015-8     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Inc. All rights reserved.
Department of Pediatric Surgery, Kawasaki Medical School, Kurashiki, Okayama pref. 534-0021, Japan.
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