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About

Peter A.S. Johnstone is a leading urologic oncologist whose research bridges surgical innovation, imaging technology, and evidence-based oncology. His work centers on improving outcomes in genitourinary cancers, particularly penile carcinoma and prostate cancer. Dr. Johnstone’s landmark 2023 systematic review and meta-analysis of minimally invasive procedures for surgical inguinal nodal staging in penile carcinoma (14 citations) has become a critical reference for surgeons navigating the balance between oncologic control and morbidity. In prostate cancer, his 2022 study on MRI radiomic pelvimetry and its correlation with margin status after robotic prostatectomy (5 citations) introduced a novel, non-invasive approach to predicting positive surgical margins—a key factor in determining the need for postoperative radiotherapy. By demonstrating that preoperative pelvic measurements on MRI can identify high-risk patients, this work offers a practical tool for surgical planning and adjuvant therapy decisions. Dr. Johnstone’s contributions exemplify how integrating advanced imaging with rigorous meta-analytic methods can refine surgical decision-making, reduce overtreatment, and personalize care for patients with urologic malignancies.