TY - CHAP M1 - Book, Section TI - Deposition Disorders A1 - Rongioletti, Franco A1 - Barnhill, Raymond L. A2 - Barnhill, Raymond L. A2 - Crowson, A. Neil A2 - Magro, Cynthia M. A2 - Piepkorn, Michael W. A2 - Kutzner, Heinz A2 - Desman, Garrett T. PY - 2020 T2 - Barnhill's Dermatopathology, 4e AB - Various substances may form deposits in the skin. They may be classified as endogenous and exogenous. Endogenous substances are the principal topic of this chapter. They include substances that are normal constituents of the skin but are abnormally deposited (eg, increased deposition of mucin) and substances that are not normal constituents of the skin (eg, amyloid). Exogenous pigmentary deposits, such as tattoos, drug-related pigmentation and heavy metals, and the special category of endogenous deposition, such as melanin depositions, are discussed in Chap. 15. SN - PB - McGraw Hill Education CY - New York, NY Y2 - 2024/04/18 UR - dermatology.mhmedical.com/content.aspx?aid=1178392923 ER -