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Long-term oncological outcomes of laparoscopic versus open transhiatal resection for patients with Siewert type II adenocarcinoma of the esophagogastric junction.

Surgical Endoscopy 2021 January
BACKGROUND: Insufficient information is available about the long-term outcomes of patients with Siewert type II adenocarcinoma of the esophagogastric junction (AEG) who undergo laparoscopic transhiatal approach (LTH). Here we evaluated the oncological safety of LTH for patients with Siewert type II AEG compared with the open transhiatal approach (OTH).

METHODS: Subjects included 79 patients with Siewert type II AEG who underwent gastrectomy combined with lower esophagectomy from 2008 to 2018 at our institution. Overall survival (OS), recurrence-free survival (RFS), status of adjuvant chemotherapy, late-phase complications, and recurrence patterns were compared between the OTH (n = 29) and LTH groups (n = 43).

RESULTS: The median observation periods were 60 months (6-120 months) and 36 months (1-88) for the OTH and LTH groups, respectively. The 5-year OS rates were significantly different: 74% (95% CI 71-77%) and 98% (95% CI 97-99) in the OTH and LTH groups (HR 0.10, 95% CI 0.01-0.83), respectively, though the OTH group included more patients with advanced disease. After stratification, according to pathological stage to adjust for selection bias, the 5-year OS and RFS rates were longer, but not significantly different among patients in the LTH group with pStage III (HR 0.42, 95% CI 0.05-3.47; HR 0.47, 95% CI 0.10-2.12, respectively). Recurrence patterns were similar in the both groups.

CONCLUSIONS: Long-term outcomes of the LTH group were not inferior to those of the OTH group, suggesting the possibility of LTH as a treatment option for selected patients with Siewert type II AEG.

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