Pilomatrixoma in the Parotid Region: A Case Report

Abstract

Pilomatrixoma, which is also called calcifying epithelioma of Malherbe, tricholemmal cyst, trichomatrixoma is a benign, cutaneous, calcifying tumor originating from pluripotential precursors of hair matrix cells. It is known to occur in children but it can be seen at any age. Pilomatrixomas are most commonly found in the head and neck area. Correct preoperative diagnosis varies from 11 to 50%, so it is a diagnostic pitfall clinically and on cytology. The risk of misdiagnosis of pilomatrixoma as a malignant tumor can cause extensive surgery. In this report a patient with a mass at her parotid region, which was thought as pilomatrixoma after a magnetic resonance imaging and fine needle aspiration cytology, was presented through researching the literature. She was treated surgically.

Keywords

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Parotis Bölgesinde Pilomatriksoma: Vaka Sunumu

Öz

Trikomatriksoma, trikolemmal kist, Malherbe'nin kalsifiye epitelyoması olarak da adlandırılan pilomatriksoma, kıl foliküllerinin pluripotent öncülerinden köken alan benign, kutanöz, kalsifiye bir tümördür. Genellikle çocuklarda görülmekle beraber her yaşta rastlanabilinir. Pilomatriksomalar çoğunlukla baş boyun bölgesinde bulunurlar. Klinik ve sitolojik olarak tanısal zorluğu olan bir tümördür ve preoperatif olarak %11-50 oranında doğru tanı alabilmektedir. Pilomariksomanın yanlış tanı alması ise gereksiz geniş cerrahilerin yaplmasına neden olabilmektedir. Bu yazıda sağ parotis bölgesinde şişlik ile başvuran, magnetik rezonans iceleme ve ince aspirasyon biyopsisi sonucunda pilomatriksoma ön tanısı alarak, cerrahi olarak tedavi edilen olgu literatür gözden geçirilerek sunulmuştur.

Anahtar Kelimeler

• Pilomatriksoma, parotis neoplazmları, ince iğne biyopsi

References

1. 1. Kumar S. Rapidly growing pilomatrixoma on eyebrow. Indian J Ophthalmol 2008; 56(1):83-84.
2. 2. Gustin AF, Lee EY. Pilomatricoma in a pediatric patient. Pediatr Radiol 2006; 36(10):1113.
3. 3. Kumaran N, Azmy A, Carachi R, Raine PA, Macfarlane JH, Howatson AG. Pilomatrixoma--accuracy of clinical diagnosis J Pediatr Surg 2006; 41(10):1755-1758.
4. 4. Lim HW, Im SA, Lim GY, Park HJ, Lee H, Sung MS, Kang BJ, Kim JY. Pilomatricomas in children: imaging characteristics with pathologic correlation. Pediatr Radiol 2007; 37(6):549- 555.
5. 5. Lemos LB, Brauchle RW. Pilomatrixoma: A Diagnostic Pitfall in Fine-Needle Aspiration Biopsies. A Review From a Small County Hospital. Ann Diagn Pathol 2004; 8(3):130-136.
6. 6. Okur E, Yıldırım İ, Bakariş S, Okur N, Kılıç MA. Altı olguda baş-boyun pilomatriksomu. Kulak Burun Boğaz İhtis Derg 2005; 14(5-6): 121-126.
7. 7. Ming-Ying Lan, Ming-Chin Lan, Ching-Yin Ho, Wing-Yin Li, Ching-Zong Lin. Pilomatricoma of the Head and Neck. A Retrospective Review of 179 Cases. Arch Otolaryngol Head Neck Surg 2003; 129:1327-1330.
8. 8. Yuca K, Kutluhan A, Çankaya H, Akman E. Giant pilomatrixoma arising in the preauriculer region: a case report. Kulak Burun Boğaz İhtis Derg 2004; 12(5-6): 147-149.

9. 9. Saussez S, Mahillon V, Blaivie C, Haller A, Chantrain G, Thill MP. Aggressive pilomatrixoma of the infra-auricular area: a case report. Auris Nasus Larynx 2005; 32(4):407-410.
10. 10. Phyu KK, Bradley PJ. Pilomatrixoma in the parotid region. J Laryngol Otol 2001; 115(12):1026-1028.