a,b,cOrit Markowitz, MD; a,b,cMichelle Schwartz, BA; a,b,cEleanor Feldman, BA; a,b,cAmanda Bienenfeld, BA; a,b,cAmy Kalowitz bieber, BS; c,dJeffery Ellis, MD; b,cUsha Alapati, MD; aMark Lebwohl, MD; b,cDaniel M. Siegel, MD, MS
aBruce E. Katz, MD; bJoseph Lewis, BS; bLaura McHugh, MS; cArthur Pellegrino, BS; cLavinia Popescu, MS, MBA aClinical Professor, Icahn School of Medicine at Mount Sinai, New York, New York;
aRichard R. Winkelmann, DO; bAxel Hauschild, MD; cNatalie Tucker, BS; dRichard White, MS; eDarrell S. Rigel, MD, MS aMelanoma Clinical Research Fellow, National Society for Cutaneous Medicine, New York, New
aHossein Alinia, MD; aLucy Lan, BA; aSandy Kuo, MD; aKaren E. Huang, MS; aSarah L. Taylor, MD, MPH; a,b,cSteven R. Feldman, MD, PhD aCenter for Dermatology Research, Department of Dermatology,
aJonathan E. Mayer, MD, MPH; bDavid J. Goldberg, MD, JD aJohns Hopkins Bayview Medical Center, Baltimore, Maryland; bMount Sinai School of Medicine, New York, New York; Skin Laser & Surgery
Philip R. Cohen, MD Department of Dermatology, University of California San Diego, San Diego, California Disclosure: The author reports no relevant conflicts of interest. Abstract Background: The “knife-cut sign”
aSoham Chaudhari, DO; bNarciss Mobini, MD aPalisades Medical Center, North Bergen, New Jersey; bUniversity of Nevada School of Medicine, Reno and Las Vegas, Nevada; Associated Pathologists, Chartered, Las Vegas, Nevada
a,bCHRISTINE R. TOTRI, MD; a,bCATALINA MATIZ, MD; a,bAndrew C. Krakowski, MD aUniversity of California, San Diego, La Jolla, California; bPediatric and Adolescent Dermatology, Rady Children’s Hospital, San Diego, California Disclosure: