title: The importance of the given history in the differential diagnosis of blue nodules.
authors.affiliation: Rubem D. Azulay Dermatology Institute, Santa Casa Da Misericordia, Rio de Janeiro, Brazil.
authors.forename: Melanie
authors.initials: M
authors.lastname: Macpherson
authors.affiliation: Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria.
authors.forename: Rainer
authors.initials: R
authors.lastname: Hofmann-Wellenhof
authors.affiliation: Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria.
authors.forename: Michaela
authors.initials: M
authors.lastname: Wiednig
authors.affiliation: Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria.
authors.forename: Erika
authors.initials: E
authors.lastname: Richtig
authors.affiliation: Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria. Electronic address: iris.zalaudek@gmail.com.
authors.forename: Iris
authors.initials: I
authors.lastname: Zalaudek
mesh_terms: D000368:Aged; D002280:Basal Cell Carcinoma / Q000175:diagnosis; D046169:Dermoscopy; D003937:Diagnosis, Differential; D005260:Female; D006406:Hematoma / Q000175:diagnosis*; D006801:Humans; D008487:Medical History Taking; D008545:Melanoma / Q000175:diagnosis; D009558:Nipples; D012878:Skin Neoplasms / Q000175:diagnosis / Q000556:secondary; D012880:Skin Pigmentation
keywords: basal cell carcinoma; dermoscopy; hematoma; melanoma; metastasis