RT Book, Section A1 Chow, Conroy A1 Neuhaus, Isaac M. A1 Grekin, Roy C. A2 Kang, Sewon A2 Amagai, Masayuki A2 Bruckner, Anna L. A2 Enk, Alexander H. A2 Margolis, David J. A2 McMichael, Amy J. A2 Orringer, Jeffrey S. SR Print(0) ID 1161335675 T1 Paget’s Disease T2 Fitzpatrick's Dermatology, 9e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9780071837798 LK accessmedicine.mhmedical.com/content.aspx?aid=1161335675 RD 2024/04/25 AB AT-A-GLANCEUncommon intraepithelial adenocarcinoma occurring in apocrine gland-bearing skin in patients older than age 50 years.Erythematous, scaly plaque frequently misdiagnosed as inflammatory or infectious dermatitis.Most commonly affected sites: unilateral nipple/areola (mammary Paget’s disease [MPD]); vulva, perianal skin, scrotum, and penis (extramammary Paget’s disease [EMPD]).Nearly all cases of MPD are associated with underlying breast carcinoma; EMPD is associated with underlying cancer in a minority (20% to 30%) of cases.