Lessons from lumps.
D003872:Dermatitis / Q000175:diagnosis; D003880:Dermatology / Q000331:legislation & jurisprudence / Q000379:methods*; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D015745:Granuloma, Foreign-Body / Q000175:diagnosis; D006801:Humans; D010336:Pathology / Q000331:legislation & jurisprudence / Q000379:methods*; D012507:Sarcoidosis / Q000175:diagnosis; D012871:Skin Diseases / Q000175:diagnosis