Focal parenchymal atrophy of the pancreas is frequently observed on pre-diagnostic computed tomography in patients with pancreatic cancer: A case-control study

Shin Miura, Tetsuya Takikawa, Kazuhiro Kikuta, Shin Hamada, Kiyoshi Kume, Naoki Yoshida, Yu Tanaka, Ryotaro Matsumoto, Mio Ikeda, Fumiya Kataoka, Akira Sasaki, Waku Hatta, Jun Inoue, Atsushi Masamune

Research output: Contribution to journalArticlepeer-review

Abstract

Pancreatic ductal adenocarcinoma (PDAC) accounts for the majority of all pancreatic cancers and is highly lethal. Focal parenchymal atrophy (FPA) of the pancreas has been reported as a characteristic imaging finding of early PDAC. Here, we reviewed 76 patients with PDAC who underwent computed tomography (CT) between 6 months and 3 years before PDAC diagnosis, as well as 76 sex-and age-matched controls without PDAC on CT examinations separated by at least 5 years. FPA was observed corresponding to the location of the subsequent tumor on pre-diagnostic CT in 14/44 (31.8%) patients between 6 months and 1 year, 14/51 (27.5%) patients between 1 and 2 years, and 9/41 (22.0%) patients between 2 and 3 years before PDAC diagnosis. Overall, FPA was more frequently observed in patients with PDAC (26/76; 34.2%) on pre-diagnostic CT than that in controls (3/76; 3.9%) (p < 0.001). FPA was observed before the appearance of cut-off/dilatation of the main pancreatic duct, suggesting that FPA might be the earliest sign of PDAC. FPA was less frequently found in tumors in the pancreatic head (3/27; 11.1%) than in those in the body (14/30; 46.7%) or tail (9/19; 47.4%). FPA may predict the subsequent PDAC diagnosis, serving as an important imaging sign for the early diagnosis of pancreatic cancer.

Original languageEnglish
Article number1693
JournalDiagnostics
Volume11
Issue number9
DOIs
Publication statusPublished - 2021 Sep

Keywords

  • Carcinoma in situ
  • Early pancreatic cancer
  • Main pancreatic duct dilatation
  • Pancreatic ductal adenocarcinoma
  • Pancreatic intraepithelial neoplasia

ASJC Scopus subject areas

  • Clinical Biochemistry

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