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Edo H, Urase Y, Ueno Y, Kido A, Tamada T, Asano Y, Ida K, Ito H, Koyama T, Miyai K, Tsuda H, Shinmoto H. Magnetic resonance imaging findings of pure prostatic ductal adenocarcinomas: a case series. Abdom Radiol (NY) 2022; 47:1929-1938. [PMID: 35226124 DOI: 10.1007/s00261-022-03454-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/10/2022] [Accepted: 02/14/2022] [Indexed: 11/24/2022]
Abstract
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.
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Affiliation(s)
- Hiromi Edo
- Department of Radiology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, 359-8513, Japan
| | - Yasuyo Urase
- Department of Radiology, Kobe University Graduate School of Medicine, 7-5-1 Kusunokicho, Kobe Chuo-ku, Hyogo, 650-0017, Japan
| | - Yoshiko Ueno
- Department of Radiology, Kobe University Graduate School of Medicine, 7-5-1 Kusunokicho, Kobe Chuo-ku, Hyogo, 650-0017, Japan
| | - Ayumu Kido
- Department of Radiology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan
| | - Tsutomu Tamada
- Department of Radiology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan
| | - Yudai Asano
- Department of Radiology, Fukuyama City Hospital, 5-23-1 Zaocho, Fukuyama, Hiroshima, 721-8511, Japan
| | - Kentaro Ida
- Department of Radiology, Fukuyama City Hospital, 5-23-1 Zaocho, Fukuyama, Hiroshima, 721-8511, Japan
| | - Hisataka Ito
- Department of Radiology, Osaka Red Cross Hospital, 5-30 Fudegasakicho, Tennoji-ku, Osaka, 543-8555, Japan
| | - Takashi Koyama
- Department of Diagnostic Radiology, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, Okayama, 710-8602, Japan
| | - Kosuke Miyai
- Department of Pathology, Japan Self-Defense Forces Central Hospital, 1-2-24 Ikejiri, Setagaya-ku, Tokyo, 154-8532, Japan
| | - Hitoshi Tsuda
- Department of Basic Pathology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, 359-8513, Japan
| | - Hiroshi Shinmoto
- Department of Radiology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, 359-8513, Japan.
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