部位的にまれなる食道憩室の1例

AN ESOPHAGEAL DIVERTICULUM ODDLY LOCATED

　Ⅰ．緒言

　食道憩室は従来咽頭食道境界部および横隔膜上部に発生する内圧性憩室と，気管分岐部付近に発生する牽引性憩室の2種に大別されている。最近われわれは部位的に珍しい胸椎Ⅰ〜Ⅱの高さの食道憩室の1例を経験したので，これを報告するとともに食道憩室についての若干の文献的考察を試みた。

　A woman, aged 41, complained of an abnormal feeling in the right side of the neck which was aggrevated by feeling of food obstruction in this region after meals. The x-ray examination revealed the presence of an esophageal diverticulum at the level of the first and second dorsal vertebrae. The lesion was successfully removed by an operation.

　The situation of the lesion was found to be much lower than that of Zenker's diverticulum, slightly higher than the level of tracheal bifurcation and the body itself was protruded forward.

　From the examination of the x-ray picture and the removed specimen the nature of the lesion was believed to be a pressure diverticulum. However, the situation of this lesion differed much from that of the ordinary pressure diverticulum. The etiology in this sense must be stated as unknown. Yet, it is most likely the result of naturally occorring weak spot in the esophagus yielding to the mechanical pressure of swallowing.