title: Late-onset disseminated superficial actinic porokeratosis in an elderly woman.
abstract: BACKGROUND
  Disseminated superficial actinic porokeratosis (DSAP) is the most common form of porokeratosis. A case of late-onset DSAP is reported with an uncommon presentation in an elderly patient.
  
  
  METHODS
  An 80-year-old woman, with diabetes mellitus treated with metformin, and hypertension treated with metoprolol and captopril, presented with multiple 2 mm-to-7 cm brown patches, for 5 years. The patches were often confluent with an atrophic center and a well-demarcated keratotic border located on the thighs, lower legs, and feet.
  
  
  RESULTS
  Histological examination of a cutaneous biopsy showed the presence of rare cornoid lamellae, confirming the clinical diagnosis of DSAP.
  
  
  CONCLUSIONS
  In this report, the atypical presentation of DSAP is discussed in this elderly patient and also the possible triggering factors at this age.
authors.affiliation: Department of Dermatology, Charles Nicolle Hospital, Boulevard 9 Avril Tunis, Tunis, Tunisia 1006.
authors.forename: Aida
authors.initials: A
authors.lastname: Khaled
authors.forename: Mouna
authors.initials: M
authors.lastname: Kourda
authors.forename: Fadoua
authors.initials: F
authors.lastname: Abdelmoula
authors.forename: Lilia
authors.initials: L
authors.lastname: M'ssedi
authors.forename: Mohamed Nejib
authors.initials: MN
authors.lastname: Tougourti
authors.forename: Mohamed Ridha
authors.initials: MR
authors.lastname: Kamoun