Publications by authors named "Weckermann D"

Purpose: Radioligand therapy is an increasingly important option for the treatment of metastatic castrate-resistant prostate cancer (mCRPC). Radiohybrid ligands targeting prostate-specific membrane antigen (PSMA) are a novel group of theranostic radioligand therapy agents for which higher tumour absorbed radiation doses have been demonstrated compared to established PSMA ligands. Here, we report data from ten patients who were treated within a compassionate use program with the radiohybrid PSMA-ligand [Lu]Lu-rhPSMA-10.

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We recently published the first dosimetry data, to our knowledge, for the radioligand therapy agent Lu-rhPSMA-10.1, providing an intrapatient comparison with Lu-PSMA-I&T in patients with metastatic prostate cancer. Here, we report efficacy and safety findings from these patients.

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As the use of radioligand therapy moves earlier in the prostate cancer timeline, minimizing the absorbed dose to normal organs while maintaining high tumor radiation doses becomes more clinically important because of the longer life expectancy of patients. We performed an intrapatient comparison of pretherapeutic dosimetry with the novel radiohybrid prostate-specific membrane antigen-targeting radiopharmaceutical Lu-rhPSMA-10.1, along with Lu-PSMA-I&T, in patients with metastatic castration-resistant prostate cancer.

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Background And Objectives: Although the incidence of bladder cancer among women is lower, they tend to more often have advanced disease at presentation with a more aggressive course. It is still unclear which factors are responsible for the poorer prognosis of bladder cancer in women.

Materials And Methods: Original papers and reviews from 2004 until 2022 were identified in a PubMed search and evaluated.

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IgG4-related pseudotumours (IgG4-RPT) represent a distinctive manifestation in the broad spectrum of IgG4-related diseases (IgG4-RD). Due to their wide morphology and rarity, IgG4-RPTs represent a diagnostic challenge in the differential between reactive lesions and a fibrous soft tissue tumours. Thus, our aim was to characterise our cases and review the literature, focusing on the macroscopic and microscopic features of the lesions.

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Introduction: Penile cancer (PeCa) is an orphan disease in European countries. The current guidelines are predominantly based on retrospective studies with a low level of evidence. In our study, we aimed to identify predictors for guideline-conform treatment and hypothesize that reference centers for PeCa and physicians' experience promote guideline compliance and therefore correct local tumor therapy.

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Background: The changing conditions in German hospitals is causing a shortage of young people. In order to identify starting point for improvements, the Bavarian association of urologists in collaboration with the German Society of Residents in Urology (GeSRU) conducted an online survey among residents in urology in summer of 2017.

Materials And Methods: A standardised survey composed of 38 questions was distributed to participants through a mailing list of the GeSRU.

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Background And Objectives: The adjuvant treatment of non-muscle-invasive bladder cancer (NMIBC) is based on the individual risk profile (RP) and its sufficient transfer from the clinic to the doctor's office. The objectives of our study were to verify the importance and degree of transfer of RP and recommendation for risk-adapted adjuvant treatment (RAAT) in patients with NMIBC as well as to develop appropriate tools for this purpose, if necessary.

Materials And Methods: An email-based survey distributed to urologists in Brandenburg, Berlin, Bavaria and Lower Saxony explored the questions mentioned above.

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Purpose: To assess the efficacy of individual sentinel node (SN)-guided pelvic intensity modulated radiation therapy (IMRT) by determining nodal clearance rate [(n expected nodal involvement - n observed regional recurrences)/n expected nodal involvement] in comparison with surgically staged patients.

Methods And Materials: Data on 475 high-risk prostate cancer patients were examined. Sixty-one consecutive patients received pelvic SN-based IMRT (5 × 1.

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Extended pelvic lymph node dissection allows exact lymph node staging and has the potential to improve prognosis. In addition to these advantages, there are some perioperative and postoperative complications. In case of transection of the obturator nerve, a microsurgical end-to-end anastomosis should be performed.

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The prognosis of prostate and bladder cancer patients is predominantly determined by the detection of distant sites of metastasis. In clinical routine, virtually only lymph node staging is of relevance to determine metastasis. Detection and characterization of disseminated tumor cells in peripheral blood or bone marrow is an additional parameter of prognostic significance.

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Purpose: The EAU guidelines recommend extended pelvic lymphadenectomy (ePLND) or sentinel-guided PLND (SLNE) for lymph node (LN) stag-ing in prostate cancer. However, the additional expenditure and increased morbidity of ePLND has led to a limitation of the PLND area and so to a reduced detection of metastases in many clinics. The SLNE offers the advantage of selective removal of sentinel LN.

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Purpose: Sentinel lymph node dissection (SLND) has replaced extended lymphadenectomy for nodal staging in several solid tumours. We present our results of SLND in prostate cancer in regard to detection and false-negative rate.

Methods: In a 2-day protocol about 300 MBq (99m)Tc-nanocolloid are injected into the prostate.

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Purpose: The outcome of prostate cancer is highly unpredictable. To assess the dynamics of systemic disease and to identify patients at high risk for early relapse we followed the fate of disseminated tumor cells in bone marrow for up to 10 years and genetically analyzed such cells isolated at various stages of disease.

Patients And Methods: Nine hundred bone marrow aspirates from 384 patients were stained using the monoclonal antibody A45-B/B3 directed against cytokeratins 8, 18, and 19.

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The current literature was reviewed for articles focusing on radioguided surgery in urological malignancies.In penile cancer sentinel lymph node dissection is part of international guidelines. By detailed histopathological analysis (serial sections, immunohistochemical staining) more micrometastases are detectable improving the histopathological staging.

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Sentinel lymph node (SLN) dissection is an excellent staging procedure with high sensitivity (>95%) for detecting positive nodes. When the sentinel node is negative, there is high certainty that other lymph nodes are also negative. Limitations of this technique include the use of hormone therapy over several months and a preceding transurethral resection or suprapubic adenomectomy.

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Background: The impact of infections with the human cytomegalovirus (HCMV) for the development of atherosclerosis and restenosis is still unclear. Both a clear correlation and no correlation at all have been reported in clinical, mostly serological studies. In our study we employed a human non-injury ex vivo organ culture model to investigate the effect of an in vitro permissive HCMV-infection on cell proliferation and neointimal hyperplasia for a period of 56 days.

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Introduction: Distant metastases of solid tumors are usually associated with fatal outcome. Disseminated cancer cells are considered early indicators of metastasis. Their sensitive detection and quantification would be a valuable tool for staging of disease and as guidance for therapeutic decisions.

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Objective: To investigate the reliability of preoperative diagnostics in predicting the true histopathological stage and grade of prostate cancer, and to examine whether lymph node (LN) metastases in unilateral prostate cancer are located unilaterally and therefore whether it is justified to dissect only the ipsilateral LNs in presumed unilateral disease.

Patients And Methods: LN metastases in clinically localized prostate cancer are often located near the internal iliac vessels. They will be detected by extended or sentinel pelvic LN dissection (PLND).

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Purpose: We determined the incidence of positive pelvic lymph nodes in men undergoing radical retropubic prostatectomy and describe the correlation with prostate specific antigen, histological grade and stage. We examined whether tumor cells are localized in the sentinel nodes only or also in other nonsentinel lymph nodes.

Materials And Methods: A total of 1,055 men with prostate cancer underwent radio guided pelvic lymph node dissection and radical retropubic prostatectomy.

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