The different dermoscopic features of the yellow background in Langerhans and non-Langerhans cells histiocytosis.

[1 ] Dermatological Clinic, La Sapienza University of Rome, Viale del Policlinico 15, 00186, Rome, Italy.

[2 ] Dermatopathological Laboratory, San Gallicano Dermatologic Institute, IRCCS, Rome, Italy.

[3 ] Department of Cellular Biotechologies and Haematology, La Sapienza University of Rome, Viale del Policlinico 15, 00186, Rome, Italy.

[4 ] Clinical Department, San Gallicano Dermatologic Institute, IRCCS, Rome, Italy.

[5 ] Department of Oncologic Dermatology, San Gallicano Dermatologic Institute, IRCCS, Rome, Italy.

[6 ] Dermatology Department, Medical University of Graz, Auenbruggerplatz, Graz, Austria.