Indian Journal of Dermatology
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Year : 2013  |  Volume : 58  |  Issue : 5  |  Page : 405

Pilomatrixoma - presented as hypopigmented tender nodule: Diagnosed by FNAC: A case report with review of literature

Department of Pathology, Indira Gandhi Medical College and Research Institute, Pondicherry, India

Correspondence Address:
Sankappa P Sinhasan
Associate Professor, Department of Pathology, Indira Gandhi Medical College and Research Institute, Pondicherry
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0019-5154.117312

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Pilomatrixoma (PMX) is a skin appendage tumor of hair matrix origin, which usually occurs on the face or upper extremities. Although the lesion can appear at any age, it is commonly seen in children and is more common in females. Despite being better defined, pilomatricomas continue to be frequently misdiagnosed and are not usually considered in differential diagnoses, either in clinical set-up or during cytological reporting. They typically present as a superficial, firm, solitary, slow-growing, painless mass in the dermis. The overlying skin may be normal or exhibit a bluish-red discoloration or ulceration. We report an 18-year-old girl presented with tender, subcutaneous nodule with overlying skin showing atrophy and hypopigmentation. Clinically, it was diagnosed as neurofibroma and sent for FNAC. We offered precise diagnosis of pilomatrixoma on cytological examination, (where chances of wrong diagnosis are very high) and it was subsequently confirmed by histopathology. We discuss the varied clinical presentations, diagnostic difficulties, and differential diagnoses of PMX.

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