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  • Title: Pilomatrixoma--accuracy of clinical diagnosis.
    Author: Kumaran N, Azmy A, Carachi R, Raine PA, Macfarlane JH, Howatson AG.
    Journal: J Pediatr Surg; 2006 Oct; 41(10):1755-8. PubMed ID: 17011283.
    Abstract:
    BACKGROUND/PURPOSE: Pilomatrixoma is a common tumor of skin appendages in children. The aim of the study was to assess the accuracy of clinical diagnosis and factors contributing to misdiagnosis. METHODS: A retrospective case note review of patients who had pilomatrixoma excised during a 5-year period in a tertiary referral children's hospital in the UK. RESULTS: From 75 patients, 78 pilomatrixomata were excised. The diagnosis was achieved preoperatively in 46% of patients. Other diagnoses included sebaceous and dermoid cysts, foreign body reaction, calcification in lymph gland, and fat necrosis. CONCLUSION: Factors contributing to misdiagnosis include cystic lesions with varying consistency, punctum-like appearance, atypical location, and absence of clinically recognizable calcification. Despite close excision, the recurrence rate is low.
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