Open Access

Significance of neoadjuvant chemoradiotherapy for borderline resectable pancreatic head cancer: Pathological local invasion and microvessel invasion analysis

  • Authors:
    • Yoshiki Naito
    • Hiroto Ishikawa
    • Eiji Sadashima
    • Yoshinobu Okabe
    • Kenjiro Takahashi
    • Ryuichi Kawahara
    • Toru Hisaka
    • Masaru Fukahori
    • Tomoyuki Ushijima
    • Yusuke Ishida
    • Masahiko Tanigawa
    • Yutaro Mihara
    • Masamichi Nakayama
    • Reiichiro Kondo
    • Hironori Kusano
    • Yorihiko Takase
    • Hideyuki Abe
    • Etsuyo Ogo
    • Koji Okuda
    • Kazuhide Shimamatsu
    • Hirohisa Yano
    • Jun Akiba
  • View Affiliations

  • Published online on: June 20, 2019     https://doi.org/10.3892/mco.2019.1885
  • Pages: 225-233
  • Copyright: © Naito et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Borderline resectable pancreatic head cancer (BR‑PHC) has low resectability due to vascular invasion. Although the clinical effects of neoadjuvant chemoradiotherapy (NAC‑RT) for BR‑PHC have been examined, few studies have reported its pathological aspects. The present study retrospectively investigated the effect of NAC‑RT on the histological features of BR‑PHC. A total of 29 patients with BR‑PHC who underwent NAC‑RT, and 55 controls with resectable PHC, who underwent pancreaticoduodenectomy at the Kurume University Hospital. Tumor staging, lymphovascular invasion (LVI), and microvessel invasion (MVI) were evaluated. The median tumor size in the NAC‑RT group was 2.0 cm, and it was smaller than that of the control group (P=0.006). The rates of lymph node metastasis, LVI, and MVI were significantly lower in the NAC‑RT group (P<0.001, 0.002, and 0.015, respectively). Overall survival in the NAC‑RT group was comparable to that in the control group, although patients with BR‑PHC generally had a poorer prognosis than those with resectable PHC. Patients in the NAC‑RT group without portal vein invasion (PVI) had a significantly better prognosis than those with PVI in the control group (P=0.002). NAC‑RT may be beneficial for patients with BR‑PHC by inhibiting local invasion and metastasis as prognosis following resection could be equivalent to that of patients with conventional ductal adenocarcinoma.
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September 2019
Volume 11 Issue 3

Print ISSN: 2049-9450
Online ISSN:2049-9469

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APA
Naito, Y., Ishikawa, H., Sadashima, E., Okabe, Y., Takahashi, K., Kawahara, R. ... Akiba, J. (2019). Significance of neoadjuvant chemoradiotherapy for borderline resectable pancreatic head cancer: Pathological local invasion and microvessel invasion analysis. Molecular and Clinical Oncology, 11, 225-233. https://doi.org/10.3892/mco.2019.1885
MLA
Naito, Y., Ishikawa, H., Sadashima, E., Okabe, Y., Takahashi, K., Kawahara, R., Hisaka, T., Fukahori, M., Ushijima, T., Ishida, Y., Tanigawa, M., Mihara, Y., Nakayama, M., Kondo, R., Kusano, H., Takase, Y., Abe, H., Ogo, E., Okuda, K., Shimamatsu, K., Yano, H., Akiba, J."Significance of neoadjuvant chemoradiotherapy for borderline resectable pancreatic head cancer: Pathological local invasion and microvessel invasion analysis". Molecular and Clinical Oncology 11.3 (2019): 225-233.
Chicago
Naito, Y., Ishikawa, H., Sadashima, E., Okabe, Y., Takahashi, K., Kawahara, R., Hisaka, T., Fukahori, M., Ushijima, T., Ishida, Y., Tanigawa, M., Mihara, Y., Nakayama, M., Kondo, R., Kusano, H., Takase, Y., Abe, H., Ogo, E., Okuda, K., Shimamatsu, K., Yano, H., Akiba, J."Significance of neoadjuvant chemoradiotherapy for borderline resectable pancreatic head cancer: Pathological local invasion and microvessel invasion analysis". Molecular and Clinical Oncology 11, no. 3 (2019): 225-233. https://doi.org/10.3892/mco.2019.1885