The Siewert-Stein classification (often called the Siewert classification in less precise shorthand reference) is a system of anatomical classification used for adenocarcinomas of the esophagogastric junction.
Classifications
editType I
editAdenocarcinoma of the distal part of the esophagus. The tumor center is located 1–5 cm above the gastric cardia.
Type II
editAdenocarcinoma of the real cardia. The tumor center is located 1 cm above or 2 cm below the gastric cardia. Considered to be true gastroesophageal junction.
Type III
editAdenocarcinoma of the subcardial stomach. The tumor center is located 2–5 cm below the gastric cardia.[1][2]
References
edit- ^ Siewert JR, Stein HJ. Carcinoma of the cardia: carcinoma of the gastroesophageal junction—classification, pathology and extent of resection. Dis Esophagus 1996;9:173-82.
- ^ Schneider, Paul M.; Mönig, Stefan P. (2017), "Siewert Classification of Adenocarcinoma of the Esophagogastric Junction: Still in or Already Out?", Adenocarcinoma of the Esophagogastric Junction, Springer International Publishing, pp. 47–56, doi:10.1007/978-3-319-28776-8_7, ISBN 9783319287744
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