RESUMEN
PURPOSE: Current guidelines do not provide strong recommendations on preservation of the neurovascular bundles during radical prostatectomy in case of high-risk (HR) prostate cancer and/or suspicious extraprostatic extension (EPE). We aimed to evaluate when, in case of unilateral HR disease, contralateral nerve sparing (NS) should be considered or not. MATERIALS AND METHODS: Within a multi-institutional data set we selected patients with unilateral HR prostate cancer, defined as unilateral EPE and/or seminal vesicle invasion (SVI) on multiparametric (mp) magnetic resonance imaging (MRI), or unilateral International Society of Urologic Pathologists (ISUP) 4-5 or prostate specific antigen ≥20 ng/ml. To evaluate when to perform NS based on the risk of contralateral EPE, we relied on chi-square automated interaction detection, a recursive machine-learning partitioning algorithm developed to identify risk groups, which was fit to predict the presence of EPE on final pathology, contralaterally to the prostate lobe with HR disease. RESULTS: A total of 705 patients were identified. Contralateral EPE was documented in 87 patients (12%). Chi-square automated interaction detection identified 3 groups, consisting of 1) absence of SVI on mpMRI and index lesion diameter ≤15 mm, 2) index lesion diameter ≤15 mm and contralateral ISUP 2-3 or index lesion diameter >15 mm and negative contralateral biopsy or ISUP 1, and 3) SVI on mpMRI or index lesion diameter >15 mm and contralateral biopsy ISUP 2-3. We named those groups as low, intermediate and high-risk, respectively, for contralateral EPE. The rate of EPE and positive surgical margins across the groups were 4.8%, 14% and 26%, and 5.6%, 13% and 18%, respectively. CONCLUSIONS: Our study challenges current guidelines by proving that wide bilateral excision in men with unilateral HR disease is not justified. Pending external validation, we propose performing NS and incremental NS in case of contralateral low and intermediate EPE risk, respectively.
Asunto(s)
Tratamientos Conservadores del Órgano/métodos , Próstata/inervación , Prostatectomía/métodos , Neoplasias de la Próstata/cirugía , Anciano , Algoritmos , Biopsia , Humanos , Calicreínas/sangre , Masculino , Márgenes de Escisión , Persona de Mediana Edad , Imágenes de Resonancia Magnética Multiparamétrica , Invasividad Neoplásica , Estudios Prospectivos , Próstata/diagnóstico por imagen , Próstata/patología , Próstata/cirugía , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/sangre , Neoplasias de la Próstata/diagnóstico , Neoplasias de la Próstata/patología , Vesículas Seminales/diagnóstico por imagen , Vesículas Seminales/inervación , Vesículas Seminales/patología , Resultado del TratamientoRESUMEN
The volume of ambulatory surgery in urology increases every year. Successful ambulatory care is defined by low hospital (re)admission rates, insuring optimal oncologic and functional outcomes. New medical techniques such as minimally invasive surgical approaches and less side effects of anesthesia have helped the development of ambulatory surgery. Additionally, it is essential to lower the burden of healthcare systems financially, without compromising quality of care. Ambulatory surgery needs a multidisciplinary team involvement, where the general practitioner has a key role.
La pratique ambulatoire en urologie augmente chaque année. Les avancées médicochirurgicales ont permis de diminuer les gestes invasifs et les effets secondaires des anesthésiques. Sur le plan financier, il est essentiel de contrôler les dépenses de santé publique, tout en maintenant comme premier objectif la sécurité du patient. Les critères de succès d'une prise en charge ambulatoire se mesurent au faible taux d'hospitalisation et de réadmission, sans compromission quant aux résultats de la chirurgie. La prise en charge ambulatoire exige une équipe pluridisciplinaire et le médecin traitant joue un rôle essentiel dans l'itinéraire clinique de son patient.