Magnetic resonance imaging findings of pure prostatic ductal adenocarcinomas: a case series

Hiromi Edo, Yasuyo Urase, Yoshiko Ueno, Ayumu Kido, Tsutomu Tamada, Yudai Asano, Kentaro Ida, Hisataka Ito, Takashi Koyama, Kosuke Miyai, Hitoshi Tsuda, Hiroshi Shinmoto

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Purpose: This study aimed to investigate the characteristics of magnetic resonance imaging (MRI) findings in pure prostatic ductal adenocarcinoma. Methods: From January 2009 to February 2020, seven patients who were diagnosed with pure prostatic ductal adenocarcinoma and had a referable preoperative MRI scan were included in the study. We evaluated the following MRI findings for each tumor: size, location, presence of multi-cystic component, and apparent diffusion coefficient (ADC) value. Results: The median maximum diameter of the tumors was 22 mm (range 19–70 mm). Regarding transverse distribution, five tumors were located in the periurethral area and two were located peripherally apart from the urethra. Two of the seven tumors had cystic components. The median ADC value of the tumors was 0.754 × 10–3 mm2/s (range 0.570–0.963 × 10–3 mm2/s). Based on the transverse distribution and components of the tumors on MRI, ductal adenocarcinomas were classified into three types: type I as a non-cystic tumor located peripherally apart from the urethra (29%, two cases); type II as a non-cystic tumor located in the periurethral area (43%, three cases); and type III as a tumor with a multi-cystic component (29%, two cases). Conclusion: The non-cystic mass with periurethral distribution (type II) and multi-cystic mass (type III) may be characteristic features that differentiate pure ductal adenocarcinoma from ordinary acinar adenocarcinoma on MRI.

Original languageEnglish
Pages (from-to)1929-1938
Number of pages10
JournalAbdominal Radiology
Issue number6
Publication statusPublished - Jun 2022
Externally publishedYes


  • Cystic component
  • Distribution
  • Ductal adenocarcinoma
  • Magnetic resonance imaging
  • Periurethral
  • Prostate

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Gastroenterology
  • Urology


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