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  • Title: Laparoscopic en bloc lower mediastinal lymph node dissection via transhiatal approach for adenocarcinoma of esophagogastric junction.
    Author: Sakaguchi M, Hosogi H, Kanaya S.
    Journal: Surg Oncol; 2021 Mar; 36():34-35. PubMed ID: 33285434.
    Abstract:
    INTRODUCTION: According to previous studies, transhiatal lower mediastinal lymph node (LMLN) dissection is recommended for patients with adenocarcinoma of esophagogastric junction (AEG) with esophageal involvement of <3.0 cm [1-3]. Herein, we reported our procedure and the short-term outcomes. SURGICAL PROCEDURE: The patient was placed in a supine position under general anesthesia, and five ports were placed into the upper abdomen. After radical suprapancreatic lymph node dissection, the center of the phrenic tendon was cut and each phrenic crus was retracted laterally to obtain good operative field. The ventral tissue along the lower esophagus was dissected from the pericardia. The dissection proceeded to the right atrium along the IVC. The dorsal tissue was dissected from the aorta. The remaining plate-like tissue was dissected from the pleura. Finally, the dissected tissue was peeled back from the esophagus. RESULTS: Twenty-four patients with Siewert type II/III AEG underwent this procedure at our hospital between April 2011 and December 2019. Two cases were administered with the right thoracic approach to secure proximal margin or perform anastomosis safely. All cases underwent R0 resection. Although the Clavien-Dindo grade IIIa anastomotic leakage was confirmed in two cases (8.3%), there were no complications associated with the procedure. The median number of retrieved LMLN was five (range 0-14). Two patients had metastatic LMLN. The length of esophageal involvement in patients with metastatic LMLN was longer than that in patients with nonmetastatic LMLN (26 mm vs 12.5 mm). CONCLUSION: Our procedure was safe and feasible for lymph node dissection in AEG.
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