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  • Title: M1a prostate cancer: Results of a Dutch multidisciplinary consensus meeting.
    Author: Aluwini S, Oprea-Lager DE, de Barros H, Mehra N, Stoevelaar H, Yakar D, van der Poel H, Dutch M1a Prostate Cancer Working Group.
    Journal: BJUI Compass; 2021 May; 2(3):159-168. PubMed ID: 35475128.
    Abstract:
    OBJECTIVES: To determine the consensus of a Dutch multidisciplinary expert panel on the diagnostic evaluation and treatment of de novo and recurrent metastatic prostate cancer (PCa) limited to non-regional lymph nodes (M1a) in daily clinical practice. MATERIALS AND METHODS: The panel consisted of 37 Dutch specialists from disciplines involved in the management of M1a PCa (urology, medical and radiation oncology, radiology, and nuclear medicine). We used a modified Delphi method consisting of two voting rounds and a consensus meeting (video conference). Consensus (good agreement) was defined as the situation in which ≥ 75% of the panelists chose the same option. RESULTS: Consensus existed for 57% of the items. The panel agreed that prostate-specific membrane antigen positron emission tomography/computed tomography (PSMA-PET/CT) is the most appropriate standard imaging modality to identify de novo (100%) and recurrent (97%) M1a PCa. Androgen deprivation therapy (ADT) combined with radiotherapy to the prostate ± the M1a lesion(s) was most frequently considered an option for de novo M1a PCa. For M1a as recurrent disease, ADT alone, deferring treatment, or local radiotherapy to the M1a lesion(s) were judged to be the most important treatment options. However, no specific indications for treatment choice in relation to disease characteristics could be formulated. CONCLUSIONS: The Dutch consensus panel preferred PSMA-PET/CT as the standard diagnostic modality to detect M1a PCa. Although potential treatment options were identified, explicit recommendations could not be formulated. This might (partly) be explained by the absence of high-level clinical evidence in this subset of patients. Further research is, therefore, strongly encouraged.
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