title: Complicated Giant Pilomatrixoma of the Parotid Region.
abstract: OBJECTIVE
  Pilomatrixoma (calcifying epithelioma of Malherbe) is a benign soft tissue tumour arising from dermis or subcutaneous tissue which should be considered in differential diagnosis of preauricular lesions especially when skin fixation is present.
  
  
  METHODS
  Twenty-three year old male referred to our clinic with complaint of left preauricular swelling over 18 months which enlarged and became painful in the last 2 months. Because the lesion showed signs of infection, surgery was planned after medical therapy was completed. FNAB suggest pleomorphic adenoma as preliminary diagnosis. US or MRI showed no specific feature.
  Total excision, superficial parotidectomy with facial nerve sparing was performed after regression of infectious signs. Postoperatively no recurrence was detected.
  
  
  CONCLUSIONS
  Pilomatrixomas are benign tumours but have diagnostic difficulties according to clinical and cytologic findings. This rare lesion should be kept in mind to avoid misdiagnosis as malign parotid tumours, particularly in the presence of skin change.
authors.affiliation: ENT Department, Dr. Lutfi Kirdar Kartal Education and Research Hospital, İstasyon Caddesi Merdivenli Sokak No 5 D 6, Kartal, 34860 Istanbul, Turkey.
authors.forename: Sedat
authors.initials: S
authors.lastname: Aydın
authors.affiliation: ENT Department, Dr. Lutfi Kirdar Kartal Education and Research Hospital, İstasyon Caddesi Merdivenli Sokak No 5 D 6, Kartal, 34860 Istanbul, Turkey.
authors.forename: Zekiye Eda
authors.initials: ZE
authors.lastname: Bilmez
authors.affiliation: ENT Department, Dr. Lutfi Kirdar Kartal Education and Research Hospital, İstasyon Caddesi Merdivenli Sokak No 5 D 6, Kartal, 34860 Istanbul, Turkey.
authors.forename: Suleyman
authors.initials: S
authors.lastname: Erdogdu
authors.affiliation: ENT Department, Dr. Lutfi Kirdar Kartal Education and Research Hospital, İstasyon Caddesi Merdivenli Sokak No 5 D 6, Kartal, 34860 Istanbul, Turkey.
authors.forename: Niyazi
authors.initials: N
authors.lastname: Altintoprak
authors.affiliation: Pathology Department, Dr. Lutfi Kirdar Kartal Education and Research Hospital, Istanbul, Turkey.
authors.forename: Şukran
authors.initials: Ş
authors.lastname: Kayipmaz
keywords: Complication; Giant; Parotid region; Pilomatrixoma; Skin neoplasm