Abstract
ABSTRACTObjective:To describe the imaging findings of prostatic tumors nonadenocarcinoma on multiparametric magnetic resonance imaging.Methods:A total of 200 patients underwented multiparametric magnetic resonance imaging of the prostate for screening for prostate cancer, from August 2013 to September 2014, followed by biopsy with ultrasound/magnetic resonance imaging fusion.Results:We found three pathologic proved cases of prostatic pure leiomyomas (0.02%) in our series and described the multiparametric magnetic resonance imaging features of these prostatic leiomyomas. The imaging findings had similar features to lesions with moderate or high suspicion for significant cancer (Likert 4 or 5) when localized both in the transitional zone or in the peripheral zone of the gland.Conclusion:Pure prostatic leiomyomas had imaging findings on multiparametric magnetic resonance imaging that mimicked usual adenocarcinomas on this test. Radiologists, urologists and pathologists must be aware of this entity and its imaging features.
Highlights
Pure leiomyoma of the prostate is a rare entity with origin in the Mullerian duct remnant, the prostatic capsule or the periglandular prostatic tissue.[1]
Imaging findings The imaging findings of these three leiomyomas had moderate to high suspicion for clinically significant prostate cancer on multiparametric MRI (mpMRI) (Likert 4 and 5)
We described three cases of pure prostatic leiomyoma on biopsies with ultrasound/magnetic resonance imaging (MRI) imaging fusion, all with a likely to highly likely probability of clinically significant prostate cancer on mpMRI using a probability classification
Summary
Pure leiomyoma of the prostate is a rare entity with origin in the Mullerian duct remnant, the prostatic capsule or the periglandular prostatic tissue.[1] Until 1951, the definition of prostatic leiomyoma was confuse, and Kaufman et al arbitrarily described it as “a circumscribed or encapsulated mass of smooth muscle, measuring 1cm or longer in diameter, containing varying amounts of fibrous tissue, but devoid of glandular elements, and which is either obviously prostatic or juxta-prostatic, in origin and position”. Einstein. 2016;14(3):374 urinary and anorectal symptoms, or an altered digital rectal examination.[1,2,5] There are few case reports in the literature describing large prostatic leiomyomas on magnetic resonance imaging (MRI).(1,6,7) to our knowledge, there is no article describing the imaging findings of pure prostatic leiomyomas in asymptomatic patients submitted to multiparametric MRI (mpMRI) of the prostate
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