A CASE OF PILOMATRICOMA

PILOMATRICOMA 치험 1례

  • Yang, Hee-Chang (Dept. of Oral & Maxillofacial Surgery, College of Dentistry, Won Kwang University) ;
  • Kim, Soo-Nam (Dept. of Oral & Maxillofacial Surgery, College of Dentistry, Won Kwang University) ;
  • Lee, Dong-Keun (Dept. of Oral & Maxillofacial Surgery, College of Dentistry, Won Kwang University) ;
  • Yim, Chang-Joon (Dept. of Oral & Maxillofacial Surgery, College of Dentistry, Won Kwang University) ;
  • Lee, Chang-Woo (Dept. of Oral & Maxillofacial Surgery, College of Dentistry, Won Kwang University) ;
  • Kim, Eun-Chul (Dept. of Oral Pathology, College of Dentistry, Won Kwang University)
  • 양희창 (원광대학교 치과대학 구강악안면외과학교실) ;
  • 김수남 (원광대학교 치과대학 구강악안면외과학교실) ;
  • 이동근 (원광대학교 치과대학 구강악안면외과학교실) ;
  • 임창준 (원광대학교 치과대학 구강악안면외과학교실) ;
  • 이창우 (원광대학교 치과대학 구강악안면외과학교실) ;
  • 김은철 (원광대학교 치과대학 구강병리학교실)
  • Published : 1990.12.31

Abstract

The pilomatricoma (calcifying epithelioma of Malherbe) is rare benign hard, spherical and freely movable cutaneous tumor, which was differentiated from hair cells, particulary hair cortex cells. It is usually occured as a single, asymptomatic, 0.5 cm to 3.0 cm sized, deep seated, firm nodule, covered by normal or pink skin. It arises chiefly in young people, including children, and most often in the head, neck and upper extrimites. The authers experienced a case of pilomatricoma which occured in preauricular region. This case was summarized as follows. 1. 10 years old female has suffered from hard subepidermal mass on preauricular area and she visited our out patient clinic. So we performed surgical extirpation and the excised specimen was pathologically examined. 2. Grossly the tumor measures 2.0 cm in diameter and firm, bosselated, spherical shaped which covered by a thin layer of fibrous tissue. On cut section, it shows spicular gritty surfaces, well encapsulation, interwoven and keratotic lamellae. 3. Histopathologically, the epithelial masses of the tumor are composed of two type of cells, basophilic cells and shodow cells. The basophilic cells resemble hair matrix cells which posses round or elogated, deeply basophilic nuclei and scanty cytoplasm. The shadow cells show a central, unstained shadow at the site of the lost nucleus. Gradual development of basophilic cells into shadow cells can be observed. Foci of calcification are present within the lobule of shadow cells. The stroma of the tumor shows a considerable foreign body giant cell reaction adjacent to the shadow cells. 4. No recurrence was observed until post-operative 40 months.

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