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Apfelbeck, Maria; Schlenker, Boris; Chaloupka, Michael; Stief, Christian G. and Clevert, Dirk-Andre (2021): Multiparametric MRI Lesion Classified as Prostate Imaging-Reporting and Data System 5 but Histopathologically Described as Benign: A Case Report and Review of Literature. In: Urologia Internationalis, Vol. 105, No. 5-6: pp. 520-524

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Abstract

Introduction: Prostate cancer (PCa) is the most common malignancy in men. The multiparametric MRI (mpMRI) significantly improved the diagnostic approach of PCa. Although PCa is highly likely to be present in prostate imaging-reporting and data system (PI-RADS) 5 lesions, there are up to 18% of PI-RADS 5 lesions with benign histopathology after targeted biopsy. Case Description: We present the case of a 66-year-old man who was referred to our hospital for MRI/ultrasound fusion-based targeted biopsy due to an elevated PSA and a PI-RADS 5 lesion described in the mpMRI. After 2 consecutive biopsies, the mpMRI target showed no malignancy. The lesion was described as PI-RADS 2 two years later. Conclusion: This case demonstrates the risk of false-positive classified PI-RADS 5 lesions in the mpMRI and the challenge in some cases to distinguish between BPH nodules and cancer. Until today, a limited amount of studies exists concerning this issue. However, further studies are required to evaluate further characteristics associated with a higher possibility of histopathologically benign findings in PI-RADS 5 lesions.

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