PSMA-positive nodal recurrence in prostate cancer : Salvage radiotherapy is superior to salvage lymph node dissection in retrospective analysis.
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ABSTRACT:
SUBMITTER: Schmidt-Hegemann NS
PROVIDER: S-EPMC7305083 | biostudies-literature | 2020 Jul
REPOSITORIES: biostudies-literature
Publications
PSMA-positive nodal recurrence in prostate cancer : Salvage radiotherapy is superior to salvage lymph node dissection in retrospective analysis.
Schmidt-Hegemann Nina-Sophie NS Buchner Alexander A Eze Chukwuka C Rogowski Paul P Schaefer Christian C Ilhan Harun H Li Minglun M Fendler Wolfgang Peter WP Bartenstein Peter P Ganswindt Ute U Stief Christian C Belka Claus C Kretschmer Alexander A
Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] 20200324 7
<h4>Purpose</h4>This analysis compares salvage lymph node dissection (SLND) to salvage lymph node radiotherapy (SLNRT) of <sup>68</sup>Ga-PSMA PET-positive nodal recurrences after radical prostatectomy (RPE).<h4>Methods</h4>A total of 67 SLNRT and 33 SLND consecutive patients with pelvic and/or para-aortic nodal recurrences after RPE were retrospectively analyzed. Biochemical recurrence-free survival rates (bRFS; PSA <0.2 ng/mL) were calculated according to Kaplan-Meier and survival curves were ...[more]
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Project description:The aim of this study was to analyze patterns of persistent versus recurrent or new PET lesions in a selected patient cohort with prostate-specific antigen (PSA) persistence after salvage lymph node dissection (SLND) and pre-procedure and post-procedure prostate-specific membrane antigen (PSMA) ligand PET. Methods: Sixteen patients were included in this multicenter study. The inclusion criteria were PSMA PET performed for biochemical recurrence before SLND (pre-SLND PET) and repeat PSMA PET performed for a persistently elevated PSA level (?0.1 ng/mL) at least 6 wk after SLND (post-SLND PET). Image analysis was performed by 3 independent nuclear medicine physicians applying the molecular imaging TNM system PROMISE. Lesions were confirmed by histopathology, presence on correlative CT/MRI/bone scanning, or PSA response after focal therapy. Results: Post-SLND PET identified prostate cancer lesions in 88% (14/16) of patients with PSA persistence after SLND. Median PSA was 1.2 ng/mL (interquartile range, 0.6-2.8 ng/mL). Disease was confined to the pelvis in 56% of patients (9/16), and most of these men had common iliac (6/16, 38%) and internal iliac lymph node metastases (6/16, 38%). Extrapelvic disease was detected in 31% of patients (5/16). In pre- and post-SLND PET comparison, 10 of 16 had at least one lesion already detected at baseline (63% PET persistence), 4 of 16 had new lesions only (25% PET recurrence), and 2 had no disease on post-SLND PET. All validated regions (11 regions in 9 patients) were true-positive. Nine of 14 (64%) patients underwent repeat local therapies after SLND (7/14 radiotherapy, 2/14 surgery). Conclusion: SLND of pelvic nodal metastases was often not complete according to PSMA PET. About two thirds of patients had PET-positive nodal disease after SLND already seen on pre-SLND PSMA PET. Notably, about one quarter of patients had new lesions, not detected by presurgical PSMA PET.
| S-EPMC7383079 | biostudies-literature
Project description:Background: By targeting the prostate-specific membrane antigen (PSMA) on prostate cancer (PCa) cells PSMA-PET/CT shows great potential in locating the site of biochemical recurrence even at low PSA (Prostate-specific antigen)-levels. Accurate imaging of PCa recurrent lymph node metastases (LNM) is crucial for metastases directed therapies such as salvage-lymph node dissection (salvage-LND). Objective: To evaluate the diagnostic accuracy of PSMA-PET/CT for detection of affected lymph-node regions at salvage-LND for nodal recurrence of PCa. Design, setting and participants: 30 patients with the suspicion of exclusively nodal PCa-relapse after primary therapy underwent a template pelvic and/or retroperitoneal salvage-LND after whole body 68-Ga-PSMA-PET/CT. The diagnostic accuracy of PET/CT was evaluated in comparison to the histopathology of 965 resected lymph nodes (LN) dissected from 68 main regions (pelvic left/right, retroperitoneal) and 289 subregions (common iliac, external iliac, obturator, internal iliac, presacral, aortic-bifurcation, aortal, caval). LNM and tumor deposits in LNM were measured bidimensionally in the histopathology. PSMA-expression was analyzed by immunohistochemistry in LNM. Results: LNM were present in 11.4% of the resected LN (110/965) resulting in 45 positive main regions and 85 positive subregions. PET/CT was true positive in 41 main regions and 69 subregions. Three PET-negative main regions and 16 PET-negative subregions finally contained LNM, the majority of these false negative subregions (13/16) were in neighboring regions of true-positive subregions. Sensitivity, specificity, positive predictive value, negative predictive value and accuracy were: main region-based 93.2%, 100%, 100%, 88.9% and 95.6%, subregion-based 81.2%, 99.5%, 98.6%, 92.7 and 94.1%. Median short diameters of tumor deposits in LNM resected from false-negative subregions (1.3 mm) were significantly smaller than in LNM removed from true-positive subregions (5.5 mm, p<0.0001). Based on anatomical subregions containing just one LNM, the necessary short diameter of tumor deposits in LNM required to reach a detection rate of 50% and 90% was estimated to be ? 2.3 mm and ? 4.5 mm, respectively. Conclusion: In men with biochemical PCa-relapse and positive PSMA-PET/CT, PET/CT detects metastatic affected anatomical regions with high accuracy at a main region and at a subregion-level. If the decision for salvage-LND is prompted by a positive PSMA-PET/CT, the size of metastases is crucial for accurate detection of affected regions. All LNM showed a clear PSMA-expression in the immunohistochemistry. Further studies need to investigate how to translate the high anatomical correlation observed between PET/CT and surgical findings into optimal approaches for target salvage-LND.
| S-EPMC5436526 | biostudies-literature
Project description:PURPOSE:To assess the accuracy of [68Ga]-PSMA-11 PET/CT or [68Ga]-PSMA-11 PET/MRI (PSMA-11 PET/CT(MRI)) for lymph node (LN) staging using salvage LN dissection (SLND) in patients with biochemical recurrence (BCR) after radical prostatectomy (RP). PATIENTS AND METHODS:In a prospective study, 65 consecutive patients who developed BCR after RP underwent SLND after PSMA-11 PET/CT(MRI) between 2014 and 2018. Extended SLND up to the inferior mesenteric artery was performed in all patients. Regional and template-based correlations between the presence of LN metastases on histopathology and whole-body PSMA-11 PET/CT(MRI) results were evaluated. The diagnostic accuracy of PSMA-11 PET/CT(MRI) was also evaluated in relation to PSA level at the time of SLND. RESULTS:The median age of the patients at the time of SLND was 65 years (IQR 63-69 years) and the median PSA level was 1.4 ng/ml (IQR 0.8-2.9 ng/ml). Before SLND, 50 patients (77%) had additional therapy after RP (26.2% androgen-deprivation therapy and 50.8% radiotherapy). The median number of LNs removed on SLND was 40 (IQR 33-48) and the median number of positive nodes was 4 (IQR 2-6). LN metastases were seen in 13.8% of resected LNs (317 of 2,292). LNs positive on PSMA-11 PET/CT(MRI) had a median diameter of 7.2 mm (IQR 5.3-9 mm). Metastatic LNs in regions negative on PSMA-11 PET had a median diameter of 3.4 mm (IQR 2.1-5.4 mm). In a regional analysis, the sensitivity of PSMA-11 PET/CT(MRI) ranged from 72% to 100%, and the specificity from 96% to 100%. Region-specific positive and negative predictive values ranged from 95% to 100% and 93% to 100%, respectively. CONCLUSION:PSMA-11 PET/CT(MRI) has a very good performance for the identification of LN metastases in patients with BCR after RP. The high diagnostic accuracy in the regional and subregional analyses demonstrates the potential of this approach to enable a region-directed instead of a complete bilateral therapeutic intervention. The performance of PSMA-11 PET/CT(MRI) is dependent on the PSA level and the size of the metastatic deposit.
| S-EPMC6667405 | biostudies-literature
Project description:To assess whether regional lymph node dissection could improve the prognosis of patients with metastatic renal cell carcinoma.We reviewed data on 258 patients who underwent cytoreductive nephrectomy at Memorial Sloan Kettering Cancer Center, New York, USA, some of whom received a concurrent lymph node dissection. The primary outcome measure was overall survival. A Cox proportional hazards regression model included, age, pathological stage, lymphadenopathy, tumor size, modified Memorial Sloan Kettering Cancer Center criteria, site of metastatic disease and lymph node dissection. We created a logistic regression model to evaluate risk factors for node-positive disease. Survival analyses were carried out for lymph node template (hilar vs other) and number of nodes removed (0-3, 4-7 or ?8).Of 258 patients, 177 (69%) underwent lymph node dissection, and positive nodes were found in 59 (33%). The 5-year overall survival was 21% for patients who underwent lymph node dissection and 31% for patients who did not. No significant difference in survival was found among patients receiving or not receiving lymph node dissection. The 5-year overall survival was 27% and 9% for negative and positive nodal status, respectively (P?<?0.0005). For patients who underwent lymph node dissection, the presence of lymphadenopathy was a significant predictor of node-positive disease (odds ratio 25.0, 95% confidence interval 9.04-69.4, P?<?0.0001).Lymph node dissection carried out during cytoreductive nephrectomy is not associated with a survival benefit. Lymph node-positive disease represents a poor prognostic variable; therefore, lymph node dissection should be considered as a staging procedure for clinical trials.
| S-EPMC4146659 | biostudies-literature
Project description:Promising oncological results have been reported for salvage lymph node dissection (SLND) with prostate-specific membrane antigen–radioguided surgery (PSMA-RGS) in patients with prostate cancer (PCa) recurrence. We performed a proof-of-principle study assessing circulating tumour cells (CTCs) as a prognostic marker in patients undergoing SLND. Twenty consecutive patients with recurrent PCa treated with PSMA-RGS during April–July 2019 for PSMA-positive LNs were evaluated. Preoperative CTC counts were assessed using the US Food and Drug Administration–approved CellSearch system. Biochemical recurrence (BCR)-free survival (BFS) and therapy-free survival (TFS) were evaluated using the Kaplan-Meier method. Overall, three patients (15%) were CTC-positive. Postoperatively, CTC-positive patients had more pathologically positive LNs (median 8 vs 2) without a difference in overall LN count. During median follow-up of 10.1 mo, 14 patients experienced BCR and five received further therapy. In Kaplan-Meier analyses, median BFS was 1.4 versus 4.3 mo and median TFS was 10.3 mo versus not reached for CTC-positive versus CTC-negative patients. The main limitations are the small number of patients, the retrospective design, and short follow-up. Our pilot study suggests that CTC-positive patients seem to have worse pathological and short-term oncological outcomes. Therefore, further validation of this biomarker for treatment decision-making before local salvage therapy could be of value. Patient summary We looked at outcomes for lymph node dissection in patients with recurrence of prostate cancer. We found that outcomes appear to be worse when circulating tumour cells (CTCs) can be measured in the blood preoperatively. We conclude that detection of CTCs indicates spread of tumour cells via the blood, which may limit the benefit of lymph node dissection. Thus, CTCs should be investigated in further studies as a potential marker to help in selecting patients who could benefit from lymph node dissection if their prostate cancer recurs.
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Project description:Seventeen patients with prostate-specific antigen (PSA) rise following local treatment for prostate cancer with curative intent underwent open or minimally invasive salvage pelvic lymph node dissection (SLND) for oligometastatic disease (<4 synchronous metastases) or as staging prior to salvage radiotherapy. Biochemical recurrence after complete biochemical response (cBR) was defined as 2 consecutive PSA increases >0,2 ng/mL; and after incomplete biochemical response as 2 consecutive PSA rises. Newly found metastasis on imaging defined clinical progression (CP). Palliative androgen deprivation therapy (ADT) was initiated if >3 metastases were detected or if patients became symptomatic. Kaplan-Meier statistics were applied.Clavien-Dindo grade 1, 2, 3a, and 3b complications were seen in 6, 1, 1, and 2 patients, respectively. Median follow-up time was 22 months. Among 13 patients treated for oligometastatic disease, 8 (67%) had a PSA decline, with 3 patients showing cBR. Median PSA progression-free survival (FS) was 4.1 months and median CP-FS 7 months. Three patients started ADT, resulting in a 2-year ADT-FS rate of 79.5%.SLND is feasible, but postoperative complication rate seems higher than that for primary LND. Biochemical and clinical response duration is limited, but as part of an oligometastatic treatment regime it can defer palliative ADT.
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Project description:Purpose: Recurrence of esophageal squamous cell carcinoma (ESCC) in regional lymph nodes (LNs) after surgical section can be treated with salvage resection, radiotherapy (RT) or chemoradiotherapy (CRT). RT or CRT is more widely used in clinic. This paper investigates the effects, toxicities and prognostic risk factors of salvage RT or CRT on patients with LN recurrence. Methods: We retrospectively analyzed the clinical outcomes of 103 patients receiving salvage RT or CRT for LN recurrence after ESCC resection. In total, 39 patients received RT alone and 64 received concurrent CRT. All the patients received intensity modulated radiation therapy (IMRT), administered with a median dose of 62 Gy (range, 50-70 Gy). Results: The median follow-up time was 44.5 months, and median survival was 22.5 months (5.5-99.5 months). One-, 3-, and 5-year overall survival (OS) were 80.6, 37.0, and 25.8%, respectively. One- and 2-year progression free survival (PFS) were 57.3 and 34.0%, respectively. Grade 3 or above toxicity was low (16.5%) and no treatment-related deaths occurred. In univariate analysis of OS, pN0 (p = 0.039), smaller LN volume (≤25 cm3, p = 0.019), combined chemotherapy (p = 0.041) and single LN recurrence (p = 0.001) were associated with prolonged OS. And pT1-2 (p = 0.044), pN0 (p = 0.042), irradiation dose (>60 Gy, p = 0.044), combined chemotherapy (p = 0.019) and single LN recurrence (p = 0.002) were associated with prolonged PFS. In multivariate analysis, the patients with only one recurrent node had a significant better OS (HR = 0.556, 95% CI 0.324-0.956, p = 0.034) and PFS (HR = 0.528, 95% CI 0.339-0.847, p = 0.008). Conclusions: Salvage RT or CRT for regional LN recurrence is effective and acceptable. Fewer recurrent nodes may indicate a better long-term survival.
| S-EPMC8017315 | biostudies-literature
Project description:A 75-year-old Japanese male was referred to our institution for the evaluation of a left ureteral tumor in the ureterovesical junction. Computed tomography and pathologic examination under ureteroscopy revealed an invasive left ureteral urothelial carcinoma with left obturator nodal metastasis without distant metastasis. First, the patient underwent systemic chemotherapy (gemcitabine and cisplatin chemotherapy). We then performed left radical nephroureterectomy and extended lymph node dissection. Pathological examination revealed that the tumor was a high-grade invasive urothelial carcinoma with left common iliac and pelvic lymph node metastasis (pT3N2). Unfortunately, metastases appeared in the common iliac and para-aortic lymph nodes immediately after the operation; therefore, the previous first-line chemotherapy was readministered and second-line chemotherapy (gemcitabine and paclitaxel chemotherapy) was also performed. We also performed consolidative radiotherapy and salvage radiotherapy (boost, 20?Gy/10 fractions to the inferior para-aortic, and left common iliac regions containing swollen lymph nodes). The patient has shown no evidence of recurrence or metastasis even approximately 4 years after the initial diagnosis of advanced UUT-UC with lymph node metastasis. Our case suggests that consolidative or salvage radiotherapy combined with surgery and chemotherapy may provide clinical benefit for selected cases of advanced UUT-UC with lymph node metastasis.
| S-EPMC5937622 | biostudies-literature
Project description:BackgroundPostprostatectomy adjuvant or salvage radiotherapy, when using standard fractionation, requires 6.5 to 8 weeks of treatment. The authors report on the safety and efficacy of an expedited radiotherapy course for salvage prostate radiotherapy.MethodsA total of 108 consecutive patients were treated with salvage radiation therapy to 65 grays (Gy) in 26 fractions of 2.5 Gy. Median follow-up was 32.4 months. Median presalvage prostate-specific antigen (PSA) was 0.44 (range, 0.05-9.50). Eighteen (17%) patients received androgen deprivation after surgery or concurrently with radiation.ResultsThe actuarial freedom from biochemical failure for the entire group at 4 years was 67% ± 5.3%. An identical 67% control rate was seen at 5 years for the first 50 enrolled patients, whose median follow-up was longer at 43 months. One acute grade 3 genitourinary toxicity occurred, with no acute grade 3 gastrointestinal and no late grade 3 toxicities observed. On univariate analysis, higher Gleason score (P = .006), PSA doubling time ≤12 months (P = .03), perineural invasion (P = .06), and negative margins (P = .06) showed association with unsuccessful salvage. On multivariate analysis, higher Gleason score (P = .057) and negative margins (P = .088) retained an association with biochemical failure.ConclusionsHypofractionated radiotherapy (65 Gy in 2.5 Gy fractions in about 5 weeks) reduces the length of treatment by from 1-½ to 3 weeks relative to other treatment schedules commonly used, produces low rates of toxicity, and demonstrates encouraging efficacy at 4 to 5 years. Hypofractionation may provide a convenient, resource-efficient, and well-tolerated salvage approach for the estimated 20,000 to 35,000 US men per year experiencing biochemical recurrence after prostatectomy.
| S-EPMC3064951 | biostudies-literature
Project description: Not available
| S-EPMC6461196 | biostudies-literature