Korean Journal of Radiology

  • 제16권2호
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  • Pages.342-348
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  • 2015
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  • 1229-6929(pISSN)
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  • 2005-8330(eISSN)
대한영상의학회 (The Korean Society of Radiology)
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DOI QR코드

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Multiphase Contrast-Enhanced Magnetic Resonance Imaging Features of Bacillus Calmette-Guérin-Induced Granulomatous Prostatitis in Five Patients

  • 투고 : 2014.01.24
  • 심사 : 2014.11.24
  • 발행 : 2015.04.01
⟨ 이전 논문 다음 논문 ⟩

초록

Objective: To evaluate the multiphase contrast-enhanced magnetic resonance (MR) imaging features of Bacillus Calmette-$Gu\acute{e}rin$(BCG)-induced granulomatous prostatitis (GP). Materials and Methods: Magnetic resonance images obtained from five patients with histopathologically proven BCG-induced GP were retrospectively analyzed for tumor location, size, signal intensity on T2-weighted images (T2WI) and diffusion-weighted images (DWI), apparent diffusion coefficient (ADC) value, and appearance on gadolinium-enhanced multiphase images. MR imaging findings were compared with histopathological findings. Results: Bacillus Calmette-$Gu\acute{e}rin$-induced GP (size range, 9-40 mm; mean, 21.2 mm) were identified in the peripheral zone in all patients. The T2WI showed lower signal intensity compared with the normal peripheral zone. The DWIs demonstrated high signal intensity and low ADC values (range, $0.44-0.68{\times}10^{-3}mm^2/sec$; mean, $0.56{\times}10^{-3}mm^2/sec$), which corresponded to GP. Gadolinium-enhanced multiphase MR imaging performed in five patients showed early and prolonged ring enhancement in all cases of GP. Granulomatous tissues with central caseation necrosis were identified histologically, which corresponded to ring enhancement and a central low intensity area on gadolinium-enhanced MR imaging. The findings on T2WI, DWI, and gadolinium-enhanced images became gradually obscured with time. Conclusion: Bacillus Calmette-$Gu\acute{e}rin$-induced GP demonstrates early and prolonged ring enhancement on gadolinium-enhanced MR imaging which might be a key finding to differentiate it from prostate cancer.

키워드

참고문헌

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피인용 문헌

  1. Radiologic presentation of chronic granulomatous prostatitis mimicking locally advanced prostate adenocarcinoma vol.11, pp.2, 2015, https://doi.org/10.1016/j.radcr.2016.02.009
  2. Urogenital Tuberculosis: Classification, Diagnosis, and Treatment vol.15, pp.4, 2015, https://doi.org/10.1016/j.eursup.2016.04.001
  3. Multiparametric magnetic resonance imaging characteristics of normal, benign and malignant conditions in the prostate vol.27, pp.5, 2015, https://doi.org/10.1007/s00330-016-4479-z
  4. Case 258: Granulomatous Prostatitis vol.289, pp.1, 2018, https://doi.org/10.1148/radiol.2018161272