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Erschienen in: Esophagus 4/2018

13.06.2018 | Original Article

Histological study of the thin membranous structure made of dense connective tissue around the esophagus in the upper mediastinum

verfasst von: Yutaka Tokairin, Yasuaki Nakajima, Kenro Kawada, Akihiro Hoshino, Takuya Okada, Tairo Ryotokuji, Masafumi Okuda, Yuichiro Kume, Yudai Kawamura, Kazuya Yamaguchi, Kagami Nagai, Keiichi Akita, Yusuke Kinugasa

Erschienen in: Esophagus | Ausgabe 4/2018

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Abstract

Background

The structure of the fascia in upper mediastinum has already been reported from gross anatomical viewpoints by Sarrazin. But it is necessary to understand meticulous anatomy for thoracoscopic or mediastinoscopic surgery. So herein, we investigate histologically the thin membranous structure made of dense connective tissues.

Methods

Semi-sequential transverse sections of the mediastinum were obtained from three cadavers. Hematoxylin and eosin staining, Elastica van Gieson staining, and Masson trichrome staining were performed to identify the presence and location of the thin membranous structure made of dense connective tissues.

Results

The “visceral sheath” and “vascular sheath,” as previously described by Sarrazin, were observed histologically. These two thin membranous structures do not surround the esophagus and trachea cylindrically. In addition, the “visceral sheath” on the right side of the upper mediastinum was unclear in comparison to the left side. The “visceral sheath” (on the left side) gradually became unclear, and seemed to almost disappear; the esophagus was found to be very close to the thoracic duct on the caudal side of the bifurcation of the trachea. Although the left recurrent nerve was located inside the “visceral sheath” in all cadavers, the left recurrent nerve lymph nodes were located inside the “visceral sheath” in cadaver 1 and between the “visceral sheath” and “vascular sheath” in cadaver 3.

Conclusion

The “visceral sheath” around the esophagus in the upper mediastinum was histologically demonstrated; however, the findings were not constant.
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Metadaten
Titel
Histological study of the thin membranous structure made of dense connective tissue around the esophagus in the upper mediastinum
verfasst von
Yutaka Tokairin
Yasuaki Nakajima
Kenro Kawada
Akihiro Hoshino
Takuya Okada
Tairo Ryotokuji
Masafumi Okuda
Yuichiro Kume
Yudai Kawamura
Kazuya Yamaguchi
Kagami Nagai
Keiichi Akita
Yusuke Kinugasa
Publikationsdatum
13.06.2018
Verlag
Springer Japan
Erschienen in
Esophagus / Ausgabe 4/2018
Print ISSN: 1612-9059
Elektronische ISSN: 1612-9067
DOI
https://doi.org/10.1007/s10388-018-0625-9

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