[PSMA-Radioguided Surgery for Salvage Lymphadenectomy in Recurrent Prostate Cancer]

TY - JOUR

T1 - [PSMA-Radioguided Surgery for Salvage Lymphadenectomy in Recurrent Prostate Cancer]

T2 - Aktuelle Urol

AU - Rauscher, I.

AU - Eiber, M.

AU - Maurer, T.

N1 - 1438-8820 Rauscher, Isabel Eiber, Matthias Maurer, Tobias English Abstract Journal Article Germany Aktuelle Urol. 2017 Apr;48(2):148-152. doi: 10.1055/s-0042-120455. Epub 2017 May 16.

PY - 2017

Y1 - 2017

N2 - Recently, the use of (111)In-labeled PSMA-I&T-based radioguided surgery ((111)In-PSMA(-)RGS) for salvage surgery using intraoperative ex-vivo gamma-probe measurements has been described by our group as a promising new and individual treatment concept in patients with localised recurrent prostate cancer (PC). (111)In-PSMA-RGS allowed for the intraoperative identification of metastatic lesions with a sensitivity, specificity and accuracy of 92.3, 93.5 and 93.1%, respectively, compared to histopathology. (111)In-PSMA-RGS was able to detect 5 additional lymph node metastases in 3 out of 31 patients compared to (68)Ga-HBED-CC-PSMA PET. A PSA decline >50 and >90% was observed in 24/31 patients and 17/31 patients, respectively. In 19/31 patients even a complete biochemical response was observed. 10/31 patients received further PC-specific treatment after a median of 125 days following (111)In-PSMA-RGS. Surgery-related complications were observed in 10 patients (Clavien-Dindo classification: grade 1 n=6, grade 3b n=4). (111)In-PSMA-RGS seems to be highly valuable for the intraoperative detection of small metastatic lesions in PC patients scheduled for salvage lymphadenectomy. It allows for an exact localisation and resection of metastatic tissue during (111)In-PSMA-RGS and thus is anticipated to have a beneficial influence on further disease progression. However, the identification of suitable patients on the basis of (68)Ga-PSMA PET imaging and clinical parameters is critical to obtain satisfactory results.

AB - Recently, the use of (111)In-labeled PSMA-I&T-based radioguided surgery ((111)In-PSMA(-)RGS) for salvage surgery using intraoperative ex-vivo gamma-probe measurements has been described by our group as a promising new and individual treatment concept in patients with localised recurrent prostate cancer (PC). (111)In-PSMA-RGS allowed for the intraoperative identification of metastatic lesions with a sensitivity, specificity and accuracy of 92.3, 93.5 and 93.1%, respectively, compared to histopathology. (111)In-PSMA-RGS was able to detect 5 additional lymph node metastases in 3 out of 31 patients compared to (68)Ga-HBED-CC-PSMA PET. A PSA decline >50 and >90% was observed in 24/31 patients and 17/31 patients, respectively. In 19/31 patients even a complete biochemical response was observed. 10/31 patients received further PC-specific treatment after a median of 125 days following (111)In-PSMA-RGS. Surgery-related complications were observed in 10 patients (Clavien-Dindo classification: grade 1 n=6, grade 3b n=4). (111)In-PSMA-RGS seems to be highly valuable for the intraoperative detection of small metastatic lesions in PC patients scheduled for salvage lymphadenectomy. It allows for an exact localisation and resection of metastatic tissue during (111)In-PSMA-RGS and thus is anticipated to have a beneficial influence on further disease progression. However, the identification of suitable patients on the basis of (68)Ga-PSMA PET imaging and clinical parameters is critical to obtain satisfactory results.

U2 - 10.1055/s-0042-120455

DO - 10.1055/s-0042-120455

M3 - SCORING: Zeitschriftenaufsatz

VL - 48

SP - 148

EP - 152

JO - AKTUEL UROL

JF - AKTUEL UROL

SN - 0001-7868

IS - 2

ER -