Re: Kenneth A. Iczkowski's Letter to the Editor re: Re: Rodolfo Montironi, Silvia Gasparrini, Roberta Mazzucchelli, et al's Letter to the Editor re: Karim A. Touijer, James A. Eastham. The Sentinel Lymph Node Concept and Novel Approaches in Detecting Lymph Node Metastasis in Prostate Cancer. Eur Urol 2016;70:738–9: Sentinel Lymph Nodes in Adipose Tissue Surrounding the Prostate Gland and Seminal Vesicles as Observed in Virtual Whole-mount Histologic Slides. Eur Urol 2017;71:e73–5