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Significance of Intramural Metastasis in Patients with Esophageal Squamous Cell Carcinoma: An Indicator of Aggressive Cancer Behavior

  • Akihiko Okamura
  • Masayuki WatanabeEmail author
  • Ryotaro Kozuki
  • Tasuku Toihata
  • Keita Takahashi
  • Yu Imamura
  • Shinji Mine
Original Scientific Report
  • 13 Downloads

Abstract

Background

Intramural metastasis (IM) is occasionally noted in patients with esophageal squamous cell carcinoma (ESCC). However, few recent studies have investigated the clinicopathological characteristics of IM and its survival impact. The present study aimed to clarify the clinicopathological and prognostic significance of IM in patients with ESCC.

Methods

We retrospectively examined 918 consecutive patients who underwent curative intent esophagectomy for ESCC. IM was defined as a pathologically confirmed metastatic lesion, which was clearly separate from the primary tumor and located within the esophageal or gastric wall. The clinicopathological characteristics and survival impact of IM were evaluated. A propensity score-matched analysis was performed to further elucidate the prognostic impact of IM.

Results

Among 918 patients, 46 (5.0%) had IM. Advanced tumors were significantly more frequent in patients with IM than in those without IM. The curative resection rate was lower in patients with IM (P = 0.001). Overall survival (OS) and disease-specific survival (DSS) were worse in patients with IM (both P < 0.001). In multivariate Cox proportional hazard analysis, IM presence was an independent poor prognostic indicator for OS and DSS (both P < 0.001). After propensity score matching, advanced tumors according to pathological N stage and lymphatic invasion were more frequent in patients with IM (P = 0.015 and 0.004, respectively). Additionally, OS and DSS were different between patients with and those without IM (both P = 0.002).

Conclusions

IM from ESCC is a local indicator of lymphatic invasion and advanced cancer, as well as an independent factor for poor prognosis.

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

268_2019_5004_MOESM1_ESM.pptx (59 kb)
Supplementary material 1 (PPTX 59 kb)
268_2019_5004_MOESM2_ESM.pptx (63 kb)
Supplementary material 2 (PPTX 62 kb)
268_2019_5004_MOESM3_ESM.docx (29 kb)
Supplementary material 3 (DOCX 29 kb)
268_2019_5004_MOESM4_ESM.docx (30 kb)
Supplementary material 4 (DOCX 29 kb)

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Copyright information

© Société Internationale de Chirurgie 2019

Authors and Affiliations

  • Akihiko Okamura
    • 1
  • Masayuki Watanabe
    • 1
    Email author
  • Ryotaro Kozuki
    • 1
  • Tasuku Toihata
    • 1
  • Keita Takahashi
    • 1
  • Yu Imamura
    • 1
  • Shinji Mine
    • 1
  1. 1.Department of Gastroenterological Surgery, Gastroenterology CenterThe Cancer Institute Hospital of Japanese Foundation for Cancer ResearchTokyoJapan

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