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Prostatectomía radical citorreductora comparado a no realizar tratamiento local en pacientes con cáncer de próstata metastásico

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What is the evidence
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Twelve systematic reviews [3,10–20] were found, including seven primary studies [21–27], none of which were trials. Two were case-control reports [22,27], and five corresponded to cohort studies [21,23–26]. One study was not used in the analyses presented below [25] because it analyzes the same database as another included study [24], where the latter uses a more updated version of the database, and the data were supplemented with other sources.
What types of patients were included*All selected studies included men with metastatic prostate adenocarcinoma at diagnosis.Three studies excluded patients with visceral metastases [23,27], and one also excluded lymph node metastases [22]. One study included men with bone, visceral, and lymph node metastases [26], and two did not report information on this matter [21,24].The average age of the patients was reported only in five studies, ranging from 61 to 78 years old.
What types of interventions were included*All primary studies aimed to evaluate the effect of local treatment in patients with metastatic prostate cancer compared to no local treatment. The interventions included in the local treatment group varied across studies, but all included radical prostatectomy or cytoreductive prostatectomy. Two studies included other interventions [24,26], termed: conformal radiation therapy, intensity-modulated radiation therapy, and radiotherapy, but only outcomes related to surgery of the primary tumor were reported in this summary. Neoadjuvant and adjuvant treatment with androgen deprivation therapy was allowed in this group.The comparator, no local treatment, was defined as androgen deprivation therapy with or without chemotherapy.
What types of outcomes were measuredThe studies evaluated multiple outcomes, which were grouped by the systematic reviews as follows:

All-cause mortality

Cancer-specific mortality

Disease progression

Development of castration resistance

Complications grade (Clavien-Dindo classification)

Severe local complications

Outcomes only reported for the group with local treatment:

Operating room time

Blood loss

Blood transfusions

Length of hospital stay

Catheterization time

Biochemical relapse

Urinary continence

Outcomes reported only for the group without local treatment:

Urinary tract complications for patients without local treatment

Surgical or percutaneous interventions for patients without local treatment

The median follow-up of the studies ranged from 20 to 82.2 months.