title: Lesson of the Week. When a cyst is not a cyst.
authors.affiliation: jmb@doctors.org.uk
authors.forename: J M
authors.initials: JM
authors.lastname: Batchelor
authors.forename: S E
authors.initials: SE
authors.lastname: Handfield-Jones
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000175:diagnosis / Q000556:secondary; D002648:Child; D018223:Dermatofibrosarcoma / Q000175:diagnosis; D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D012536:Scalp Dermatoses / Q000175:diagnosis*; D012626:Sebaceous Gland Neoplasms / Q000175:diagnosis; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000556:secondary