INTRODUCTION
Prostate cancer (PCa) is the most common cancer in the male population
(1). Multiparametric magnetic resonance imaging (mpMRI), one of the
current imaging modalities for prostate glands, has been successful in
PCa diagnosis. This non-invasive method is now frequently used in
diagnosis and preoperative staging in many healthcare centers. The
increased use of prostate mpMRI has led to the need for objective
criteria. For this purpose, the use of ”the “Prostate Imaging Reporting
and Data System (PI-RADS),” which was prepared by the American College
of Radiology (ACR) and the European Society of Urogenital Radiology
(ESUR), has been suggested in reports. Currently, PI-RADS v2.1 is used
for this purpose.
The most important factors determining prognosis in patients with PCa
are the Gleason score and stage (2). One of the factors affecting this
stage is the presence of extraprostatic extension (EPE). The
postoperative prognosis is worse in patients with EPE due to the
increased risk of both higher positive surgical margin rates and early
biochemical recurrence(3). For this reason, preoperative evaluation of
the existence of EPE in the MRI examination is essential. Recently, the
detection of EPE using mpMRI is based on macroscopic EPE findings. Some
objective criteria are needed for the detection of EPE, especially
microscopic EPE, while evaluating mpMRI(4). The aim of our study is to
evaluate the interobserver agreement in terms of the presence of EPE in
the prostate mpMRI obtained using a 1.5T MRI device. Moreover, it aims
to assess whether there is a relationship between EPE and capsule-tumor
contact length (TCL) and lesion length (LL) in light of
histopathological data.