Many patients ask us to request a prostate-specific antigen (PSA) test. According to the Brazilian Ministry of Health, prostate cancer is the second most common type of cancer in the male population in all regions of our country. It is the second-leading cause of cancer death in the male population, reaffirming its epidemiologic importance in Brazil. On the other hand, a Ministry of Health technical paper recommends against population-based screening for prostate cancer. So, what should we do?
First, it is important to distinguish early diagnosis from screening. Early diagnosis is the identification of cancer in early stages in people with signs and symptoms. Screening is characterized by the systematic application of exams — digital rectal exam and PSA test — in asymptomatic people, with the aim of identifying cancer in an early stage.
A recent European epidemiologic study reinforced this thesis and helps guide us.
The study included men aged 35-84 years from 26 European countries. Data on cancer incidence and mortality were collected between 1980 and 2017. The data suggested overdiagnosis of prostate cancer, which varied over time and among populations. The findings supported previous recommendations that any implementation of prostate cancer screening should be carefully designed, with an emphasis on minimizing the harms of overdiagnosis.
The clinical evolution of prostate cancer is still not well understood. Increasing age is associated with increased mortality. Many men with less aggressive disease tend to die with cancer rather than die of cancer. However, it is not always possible at the time of diagnosis to determine which tumors will be aggressive and which will grow slowly.
On the other hand, with screening, many of these indolent cancers are unnecessarily detected, generating excessive exams and treatments with negative repercussions (eg, pain, bleeding, infections, stress, and urinary and sexual dysfunction).
So, how should we as clinicians proceed regarding screening?
We should request the PSA test and emphasize the importance of digital rectal exam by a urologist for those at high risk for prostatic neoplasia (ie, those with family history) or those with urinary symptoms that may be associated with prostate cancer.
In general, we should draw attention to the possible risks and benefits of testing and adopt a shared decision-making approach with asymptomatic men or those at low risk who wish to have the screening exam. But achieving a shared decision is not a simple task.
I always have a thorough conversation with patients, but I confess that I request the exam in most cases.
Dr. Wajngarten is a professor of cardiology, Faculty of Medicine, at the University of São Paulo in Brazil. Dr. Wajngarten reported no conflicts of interest.
This story was translated from the Medscape Portuguese edition using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.