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Topographical study of the connections of the rami communicantes from the first to the fifth thoracic sympathetic ganglia

 Hyung‐Jin Won  ;  Jong Eun Lee  ;  Won‐Taek Lee  ;  Hyung‐Sun Won 
 CLINICAL ANATOMY, Vol.31(8) : 1151-1157, 2018 
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Rami communicantes ; intercostal nerve ; thoracic sympathetic ganglion ; thoracoscopic sympathetic surgery
This study investigated the morphological variations and histological patterns of the rami communicantes (RCs) arising from the first to the fifth thoracic sympathetic ganglia, and considered the clinical significance of these variations. Fifty upper thoracic portions from 26 adult Korean cadavers were used in this study. There were 731 RCs arising from the first to the fifth thoracic sympathetic ganglia. They were classified into three types depending on the connection between the sympathetic ganglion and the intercostal nerves: in type I, the RCs connected the ganglion to the corresponding intercostal nerve, and in types II and III, respectively, they connected it to the nerve one level above or below the corresponding intercostal nerve. Some RCs of types I and II could not be observed without additional preliminary surgical procedures. Diverse combinations of RC types arose from the first to the fifth thoracic sympathetic ganglia, combinations of types I and III being the most common (70%) in the first sympathetic ganglion and those comprising only type I being most frequent in the other ganglia. The RCs could not be identified by the naked eye in either fresh or fixed cadavers, so they were confirmed on the basis of their histological appearance. These results are expected to improve knowledge of morphological variations of the RCs in the upper five thoracic sympathetic ganglia, and to provide helpful information for clinical management in this region.
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1. College of Medicine (의과대학) > Dept. of Anatomy (해부학교실) > 1. Journal Papers
Yonsei Authors
Lee, Won Taek(이원택) ORCID logo https://orcid.org/0000-0001-7348-9562
Lee, Jong Eun(이종은) ORCID logo https://orcid.org/0000-0001-6203-7413
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