title: Eruptive Tumors of the Follicular Infundibulum: An Unexpected Diagnosis of Hypopigmented Macules.
abstract: BACKGROUND
  Tumor of the follicular infundibulum (TFI) is considered as a rare benign neoplasm providing two distinctive clinical patterns: the solitary and the eruptive form. The clinical presentations resemble many other dermatologic conditions and require histopathological study to make a definite diagnosis.
  
  
  OBJECTIVE
  To inform physicians of a clinical presentation of TFI.
  
  
  METHODS
  We report on a 50-year-old man who presented with multiple asymptomatic hypopigmented macules resistant to the treatments. The histopathological study was consistent with tumors of the follicular infundibulum.
  
  
  CONCLUSIONS
  Hypopigmented macules are one of the more common clinical presentations in dermatological practices. It is important to include TFI in the differential diagnosis when a patient with hypopigmented lesions does not respond to the treatment based on the clinical diagnosis.
authors.affiliation: Division of Dermatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand. poonkiat@hotmail.com.
authors.forename: Poonkiat
authors.identifier: http://orcid.org/0000-0001-9723-0563
authors.initials: P
authors.lastname: Suchonwanit
authors.affiliation: Division of Dermatology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Panunee
authors.initials: P
authors.lastname: Ruangchainikom
authors.affiliation: Department of Pathology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Yingluck
authors.initials: Y
authors.lastname: Apibal
keywords: Eruptive; Hypopigmentation; Neoplasms; Tumor of the follicular infundibulum