Efficacy and Safety of Darolutamide in Combination With Androgen-Deprivation Therapy in Prostate Cancer Patients With Lymph Node-positive After Radical Prostatectomy: A Prospective Observational Cohort Study

Inclusion Criteria: * 1\. patients voluntarily enrolled in the study and signed an informed consent form; 2. aged 18-80 years (including 18 and 80 years), male; 3. diagnosed with prostate adenocarcinoma by pathology or cytology; 4. Eastern Cooperative Oncology Group (ECOG) Physical Status (PS) score 0-1. 5. patients who have undergone radical prostatectomy (RP) and pelvic lymph node dissection (PLND) without non-regional lymph node metastasis, bone metastasis, or metastasis to other sites (e.g., visceral metastasis) as confirmed by conventional imaging (bone imaging, CT, or MRI) or PSMA PET/CT 6. have positive postoperative pathologic lymph nodes (pN1); 7. with their consent and have signed an informed consent form. Exclusion Criteria: * Patients will not be enrolled if they have any of the following: 1. have histologic features of neuroendocrine differentiation or small cell carcinoma; 2. have received prior treatment for prostate cancer: postoperative systemic therapy including ADT for \>3 months, conventional endocrine therapy (e.g., flutamide, bicalutamide) for \>3 months, novel endocrine therapy (e.g., dalotamide, abiraterone, abatacept, enzalutamide), chemotherapy (e.g., docetaxel), immunotherapy, and targeted therapies 3. Inability to tolerate Darotamine or ADT treatment; 4. persons who are allergic or have a known history of allergy to darotarolimide or ADT; 5. other conditions that the investigator considers inappropriate for inclusion.