EditorialCollecting Duct Carcinoma Versus Renal Medullary Carcinoma: An Appeal for Nosologic and Biological ClarityAmin, Mahul B. MD*; Smith, Steven C. MD, PhD*; Agaimy, Abbas MD†; Argani, Pedram MD‡; Compérat, Eva Marie MD, PhD§; Delahunt, Brett MD, FRCPA, FRCPath∥; Epstein, Jonathan I. MD‡; Eble, John N. MD¶; Grignon, David J. MD¶; Hartmann, Arndt MD†; Hes, Ondřej MD, PhD#; Hirsch, Michelle S. MD, PhD**; Jimenez, Rafael E. MD††; Kunju, Lakshmi P. MD‡‡; Martignoni, Guido MD§§; McKenney, Jesse K. MD∥∥; Moch, Holger MD¶¶; Montironi, Rodolfo MD##; Paner, Gladell P. MD***; Rao, Priya MD†††; Srigley, John R. MD‡‡‡; Tickoo, Satish K. MD§§§; Reuter, Victor E. MD§§§Author Information *Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA ‡Department of Pathology, Johns Hopkins Hospital, Baltimore, MD ¶Department of Pathology, Indiana University School of Medicine, Indianapolis, IN **Department of Pathology, Brigham and Women’s Hospital, Boston, MA ††Division of Anatomic Pathology, Mayo Clinic, Rochester, MN ‡‡Department of Pathology, University of Michigan, Ann Arbor, MI ∥∥Department of Pathology, Cleveland Clinic Foundation, Cleveland, OH ***Department of Pathology, University of Chicago, Chicago, IL †††Department of Pathology, MD Anderson Cancer Center, Houston, TX §§§Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, NY †Institute of Pathology, Universitätsklinikum Erlangen, Erlangen, Germany §Department of Pathology, Groupe Hospitalier La Pitie-Salpêtrière, Université Pierre et Marie Curie, Paris, France ∥Department of Pathology, Wellington School of Medicine and Health Sciences, University of Otago, Otago, New Zealand #Department of Pathology, Faculty of Medicine in Plzeň, Charles University in Prague, Prague, Czech Republic §§Department of Pathology and Diagnostics, University of Verona, Verona ##Section of Pathological Anatomy, Polytechnic University of Medicine, United Hospitals, Ancona, Italy ¶¶Department of Pathology, University of Hospital Zurich, Zurich, Switzerland ‡‡‡Department Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada S.C.S. is a co-first author. Conflicts of Interest and Source of Funding: The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article. Correspondence: Mahul B. Amin, MD, Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, 8700 Beverly Blvd, S Tower, Rm 8707, Los Angeles, CA 90048 (e-mail: email@example.com). The American Journal of Surgical Pathology: July 2014 - Volume 38 - Issue 7 - p 871-874 doi: 10.1097/PAS.0000000000000222 Buy Metrics © 2014 by Lippincott Williams & Wilkins.