title: [Sugar tumor].
abstract: BACKGROUND
  Clear cell tumor of the lung is a rare and very unusual benign pulmonary tumor. This tumor is called sugar tumor because of the abundance of glycogen on its cells.
  
  
  OBJECTIVE
  To report a case of sugar tumor and discuss clinical, evolutive features and diagnosis difficulties of this tumor.
  
  
  METHODS
  A case of 75 years old woman presenting as a round pulmonary opacity. Computed tomography (CT) scans showed in the left lower lobe a solitary pulmonary solid tumor with central calcifications. The patient underwent tumor resection. Pathologic examination, including immunohistochemical studies, revealed a benign clear cell tumor, so-called "sugar tumor".
  
  
  CONCLUSIONS
  It's the second case reported in Tunisia. This very rare tumor of the lung is characterized by some immunohistological features. Its evolution is favourable after surgery.
authors.affiliation: Universite Tunis, El Manar, Tunisie.
authors.forename: Sonia
authors.initials: S
authors.lastname: Sanai Raggad
authors.forename: Anissa
authors.initials: A
authors.lastname: Zouaoui
authors.forename: Nadia
authors.initials: N
authors.lastname: Mehiri
authors.forename: Jouda
authors.initials: J
authors.lastname: Cherif
authors.forename: Hafedh
authors.initials: H
authors.lastname: Zakhama
authors.forename: Mohamed Nidhameddine
authors.initials: MN
authors.lastname: Kchir
authors.forename: Mounir
authors.initials: M
authors.lastname: Dhiab
authors.forename: Jalloul
authors.initials: J
authors.lastname: Daghfous
authors.forename: Bechir
authors.initials: B
authors.lastname: Louzir
authors.forename: Majed
authors.initials: M
authors.lastname: Beji
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology* / Q000601:surgery; D054973:Perivascular Epithelioid Cell Neoplasms / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed