title: Magnetic resonance imaging of benign prostatic hyperplasia.
abstract: Benign prostatic hyperplasia (BPH) is a common condition in middle-aged and older men and negatively affects the quality of life. An ultrasound classification for BPH based on a previous pathologic classification was reported, and the types of BPH were classified according to different enlargement locations in the prostate. Afterwards, this classification was demonstrated using magnetic resonance imaging (MRI). The classification of BPH is important, as patients with different types of BPH can have different symptoms and treatment options. BPH types on MRI are as follows: type 0, an equal to or less than 25 cm3 prostate showing little or no zonal enlargements; type 1, bilateral transition zone (TZ) enlargement; type 2, retrourethral enlargement; type 3, bilateral TZ and retrourethral enlargement; type 4, pedunculated enlargement; type 5, pedunculated with bilateral TZ and/or retrourethral enlargement; type 6, subtrigonal or ectopic enlargement; type 7, other combinations of enlargements. We retrospectively evaluated MRI images of BPH patients who were histologically diagnosed and presented the different types of BPH on MRI. MRI, with its advantage of multiplanar imaging and superior soft tissue contrast resolution, can be used in BPH patients for differentiation of BPH from prostate cancer, estimation of zonal and entire prostatic volumes, determination of the stromal/glandular ratio, detection of the enlargement locations, and classification of BPH types which may be potentially helpful in choosing the optimal treatment.
authors.affiliation: Department of Radiology, University of Chicago School of Medicine, Chicago, Illinois, USA. sguneyli@uchicago.edu.
authors.forename: Serkan
authors.initials: S
authors.lastname: Guneyli
authors.forename: Emily
authors.initials: E
authors.lastname: Ward
authors.forename: Stephen
authors.initials: S
authors.lastname: Thomas
authors.forename: Ambereen Nehal
authors.initials: AN
authors.lastname: Yousuf
authors.forename: Igor
authors.initials: I
authors.lastname: Trilisky
authors.forename: Yahui
authors.initials: Y
authors.lastname: Peng
authors.forename: Tatjana
authors.initials: T
authors.lastname: Antic
authors.forename: Aytekin
authors.initials: A
authors.lastname: Oto
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D011470:Prostatic Hyperplasia / Q000000981:diagnostic imaging* / Q000473:pathology; D011788:Quality of Life; D012189:Retrospective Studies