Microscopic distance from tumor invasion front to serosa might be a useful predictive factor for peritoneal recurrence after curative resection of T3-gastric cancer


Autoři: Shingo Togano aff001;  Masakazu Yashiro aff001;  Yuichiro Miki aff001;  Yurie Yamamato aff002;  Tomohiro Sera aff001;  Yukako Kushitani aff001;  Atsushi Sugimoto aff001;  Shuhei Kushiyama aff001;  Sadaaki Nishimura aff001;  Kenji Kuroda aff001;  Tomohisa Okuno aff001;  Mami Yoshii aff001;  Tatsuro Tamura aff001;  Takahiro Toyokawa aff001;  Hiroaki Tanaka aff001;  Kazuya Muguruma aff001;  Sayaka Tanaka aff004;  Masaichi Ohira aff001
Působiště autorů: Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan aff001;  Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan aff002;  Cancer Center for Translational Research, Osaka City University Graduate School of Medicine, Osaka, Japan aff003;  Department of Diagnostic Pathology, Osaka City University Graduate School of Medicine, Osaka, Japan aff004
Vyšlo v časopise: PLoS ONE 15(1)
Kategorie: Research Article
doi: 10.1371/journal.pone.0225958

Souhrn

Background

Peritoneal recurrence is one of the most frequent recurrent diseases in gastric cancer. Although the exposure of cancer cells to the serosal surface is considered a common risk factor for peritoneal recurrence, there are some cases of peritoneal recurrence without infiltration to the serosal surface even after curative surgery. This study sought to clarify the risk factors of peritoneal recurrence in the absence of invasion to the serosal surface.

Materials and methods

Ninety-six patients with gastric cancer who underwent curative surgery were enrolled. In all 96 cases, the depth of tumor invasion was subserosal (T3). The microscopic distance from the tumor invasion front to the serosa (DIFS) was measured using tissue slides by H&E staining and pan-cytokeratin staining. E-cadherin expression was evaluated by immunohistochemical staining.

Results

Among the 96 patients, 16 developed peritoneal recurrence after curative surgery. The DIFS of the tumors with peritoneal recurrence (156±220 μm) was significantly shorter (p = 0.011) than that without peritoneal recurrence (360±478 μm). Peritoneal recurrence was significantly correlated with DIFS ≤234 μm (p = 0.023), but not with E-cadherin expression. The prognosis of DIFS ≤234 μm was significantly poorer than that of DIFS >234 μm (log rank, p = 0.007). A multivariate analysis of the patients' five-year overall survival revealed that DIFS ≤234 μm and lymph node metastasis were significantly correlated with survival (p = 0.005, p = 0.032, respectively).

Conclusion

The measurement of the DIFS might be useful for the prediction of peritoneal recurrence in T3-gastric cancer patients after curative surgery.

Klíčová slova:

Cell staining – Gastric cancer – Lymph nodes – Metastasis – Multivariate analysis – Prognosis – Surgical and invasive medical procedures – Surgical oncology


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