[Application of dynamic contrast enhanced status in multiparametric magnetic resonance imaging for prostatic cancer with PI-RADS 4 lesion].

Objective: To evaluate the diagnostic value of dynamic contrast enhanced (DCE) of multiparametric magnetic resonance imaging (mpMRI) for prostate imaging reporting and data system (PI-RADS) 4 lesion in prostate peripheral zone.

Methods: The clinical data of patients with PI-RADS 4 lesion in prostate peripheral zone who underwent prostate biopsy from January 2018 to September 2021 in Peking University First Hospital were retrospectively included. According to DCE status, the patients were divided into the conventional group (4 points for diffusion-weighted imaging) and the comprehensive group (3 points for diffusion-weighted imaging + 1 point for DCE positive).

[A head-to-head comparison of contemporary indolent prostate cancer screen protocols in Chinese].

Objective: To compare the diagnostic accuracy of five internationally used indolent prostate cancer screen protocols in Chinese prostate cancer patients.

Methods: Retrospective analysis was made of the consecutive cohort of 314 patients, from Jan. 2006 to Apr.

[Adenocarcinoma of the prostate in patients under 50 years of age: analysis of 10 cases].

Objective: To analyze the clinicopathologic features of 10 Chinese prostate adenocarcinoma patients under 50 years.

Methods: Between January 2007 and April 2012, 10 cases of prostate adenocarcinoma patients under 50 years (age: 36-49) were diagnosed at our institution through prostate biopsy. The indications of biopsy were abnormal digital rectal examination (7 cases) and/or a total prostate specific antigen (PSA) over 4.

[Distribution characteristics of cancerous foci in the prostate among patients undergoing single positive core biopsy].

Objective: To determine the distribution characteristics of cancerous foci in the prostate by retrospective analysis on the radical prostatectomy (RP) samples from patients with prostate cancer diagnosed by single positive core biopsy and treated by RP.

Methods: Thirty-seven patients with prostate cancer diagnosed by ultrasound-guided biopsy and single positive core biopsy underwent RP. We reviewed the pre- and post-operative data of the patients, compared the results of biopsies and pathological examination of the RP samples, and analyzed the factors that led to the underestimation of the overall prostate cancer risks.

[Impact of prostate volume on the diagnostic value of prostate cancer with different biopsy strategies].

Objective: To assess impact of different prostate biopsy strategies according to prostate volume on tumor detection.

Methods: A total of 323 consecutive men with suspected prostate cancer were included in the study. Indications for transrectal ultrasound guided prostate biopsy were: abnormal digital rectal examination (DRE, 52 cases) and/or a total prostate specific antigen (PSA) over 4.

[Correlation of intravesical prostatic protrusion with clinical evaluation parameters in BPH patients].

Objective: To investigate the correlation of the degrees of intravesical prostatic protrusion (IPP) measured by transabdominal ultrasound with the clinical evaluation parameters in BPH patients.

Methods: We measured the length of IPP in the mid-sagittal section by transabdominal ultrasound in 275 BPH outpatients with lower urinary tract symptoms, and analyzed the correlations of the degree of IPP with the age, prostatic volume (PV), international prostatic symptom score (IPSS), maximum uroflow rate (Qmax), and postvoid residual urine volume (PVR) of the patients.

Results: The degree of IPP was correlated positively with the age (r = 0.

[Diagnosis and differential diagnosis value of ultrasound in epididymal mass].

Objective: To elevate the diagnosis and differential diagnosis levels of epididymal mass by sonography.

Methods: This was a retrospective study of 179 cases of epididymal mass treated by surgery in our hospital between 1990 and 2005. The analysis was focused on pathological and sonographic features.

[Etiology and management of persistent hematospermia: a pilot study].

Objectives: To study the etiology of persistent hematospermia and to evaluate the efficacy of transrectal ultrasonography (TRUS)-guided transperineal needle aspiration and irrigation for diagnosis and treatment of persistent hematospermia.

Methods: Twelve patients were included in the study, with a mean age of (36.4 +/- 10.