Journal
CANCERS
Volume 14, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/cancers14020368
Keywords
active surveillance; prostate cancer; transurethral resection of the prostate; TURP; prostate cancer results
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This study investigated the outcomes of active surveillance for low-risk prostate cancer over a period of 20 years, and found that active surveillance is a safe option with approximately half of the patients eventually requiring definitive treatment.
Simple Summary Prostate cancer is the most commonly diagnosed cancer in men. Active surveillance-repeated measurements of prostate specific antigen, digital rectal examination, and prostate biopsies-is an alternative treatment option to active therapy, such as radical prostatectomy or radiotherapy, for patients with low grade prostate cancer. It aims to reduce overtreatment and negative side effects of active treatment. However, long-term outcome data is rare. As we prospectively collected data since the beginning of active surveillance in our clinic in 1999, our study provides insights into long-term outcomes after two decades of active surveillance. Objective: To report the outcomes of active surveillance (AS) for low-risk prostate cancer (PCa) in a single-center cohort. Patients and Methods: This is a prospective, single-center, observational study. The cohort included all patients who underwent AS for PCa between December 1999 and December 2020 at our institution. Follow-up appointments (FU) ended in February 2021. Results: A total of 413 men were enrolled in the study, and 391 had at least one FU. Of those who followed up, 267 had PCa diagnosed by transrectal ultrasound (TRUS)-guided biopsy (T1c: 68.3%), while 124 were diagnosed after transurethral resection of the prostate (TURP) (T1a/b: 31.7%). Median FU was 46 months (IQR 25-90). Cancer specific survival was 99.7% and overall survival was 92.3%. Median reclassification time was 11.2 years. After 20 years, 25% of patients were reclassified within 4.58 years, 6.6% opted to switch to watchful waiting, 4.1% died, 17.4% were lost to FU, and 46.8% remained on AS. Those diagnosed by TRUS had a significantly higher reclassification rate than those diagnosed by TURP (p < 0.0001). Men diagnosed by targeted MRI/TRUS fusion biopsy tended to have a higher reclassification probability than those diagnosed by conventional template biopsies (p = 0.083). Conclusions: Our single-center cohort spanning over two decades revealed that AS remains a safe option for low-risk PCa even in the long term. Approximately half of AS enrollees will eventually require definitive treatment due to disease progression. Men with incidental prostate cancer were significantly less likely to have disease progression.
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