title: Sclerosing Polycystic Adenosis: A Rare Tumor of the Salivary Glands.
abstract: A 74-year-old woman presented to the Head and Neck Surgery clinic with a 4-year history of a slowly growing, painful, left-sided neck mass in the tail of the parotid gland. Fine-needle aspiration suggested well-differentiated adenocarcinoma.
  
  
  
  The patient underwent a superficial parotidectomy and super-selective neck dissection (level 2). Pathology revealed a tumor consistent with sclerosing polycystic adenosis.
  
  
  
  Sclerosing polycystic adenosis is a rare inflammatory process that causes fibrocystic changes in the salivary gland. Apocrine-like metaplasia and epithelial atypia are common pathologic features. To our knowledge, a total of 51 cases have been described in the English-language literature.
authors.affiliation: Head and Neck Surgeon at the San Francisco Medical Center in CA. christopher.g.tang@kp.org.
authors.forename: Christopher G
authors.initials: CG
authors.lastname: Tang
authors.affiliation: Student at Washington University in St Louis, MO. justinbf56@gmail.com.
authors.forename: Justin B
authors.initials: JB
authors.lastname: Fong
authors.affiliation: Head and Neck Surgeon at the Oakland Medical Center in CA. karen.axelsson57@gmail.com.
authors.forename: Karen L
authors.initials: KL
authors.lastname: Axelsson
authors.affiliation: Head and Neck Surgeon at the Oakland Medical Center in CA. d.gurushanthaiah@kp.org.
authors.forename: Deepak
authors.initials: D
authors.lastname: Gurushanthaiah
mesh_terms: D000368:Aged; D044963:Biopsy, Fine-Needle; D003560:Cysts / Q000175:diagnosis* / Q000601:surgery; D005260:Female; D006801:Humans; D012469:Salivary Glands / Q000473:pathology*; D012598:Sclerosis / Q000175:diagnosis / Q000473:pathology