Diagnostics (Feb 2021)

Clinical Analysis of Early-Stage Pancreatic Cancer and Proposal for a New Diagnostic Algorithm: A Multicenter Observational Study

  • Juri Ikemoto,
  • Masahiro Serikawa,
  • Keiji Hanada,
  • Noriaki Eguchi,
  • Tamito Sasaki,
  • Yoshifumi Fujimoto,
  • Shinichiro Sugiyama,
  • Atsushi Yamaguchi,
  • Bunjiro Noma,
  • Michihiro Kamigaki,
  • Tomoyuki Minami,
  • Akihito Okazaki,
  • Masanobu Yukutake,
  • Yasutaka Ishii,
  • Teruo Mouri,
  • Akinori Shimizu,
  • Tomofumi Tsuboi,
  • Koji Arihiro,
  • Kazuaki Chayama

DOI
https://doi.org/10.3390/diagnostics11020287
Journal volume & issue
Vol. 11, no. 2
p. 287

Abstract

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Early diagnosis of pancreatic ductal adenocarcinoma (PDAC) is challenging but essential for improving its poor prognosis. We established a multicenter study to clarify the clinicopathological features, and to propose new algorithm for early diagnosis of PDAC. Ninety-six patients with stage 0 and IA PDAC were enrolled from 13 high-volume centers. Overall, 70% of the patients were asymptomatic. The serum pancreatic enzyme levels were abnormal in half of the patients. The sensitivity of endoscopic ultrasonography (EUS) for detecting small PDAC was superior to computed tomography and magnetic resonance imaging (MRI) (82%, 58%, and 38%, respectively). Indirect imaging findings were useful to detect early-stage PDAC; especially, main pancreatic duct stenosis on MRI had the highest positive rate of 86% in stage 0 patients. For preoperative pathological diagnosis, the sensitivity of endoscopic retrograde cholangiopancreatography (ERCP)-associated pancreatic juice cytology was 84%. Among the stage IA patients, EUS-guided fine-needle aspiration revealed adenocarcinoma in 93% patients. For early diagnosis of PDAC, it is essential to identify asymptomatic patients and ensure close examinations of indirect imaging findings and standardization of preoperative pathological diagnosis. Therefore, a new diagnostic algorithm based on tumor size and imaging findings should be developed.

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