Confused subcutaneous nodules in children: Differential diagnosis of pilomatricoma in children

BackgroundPilomatricoma is a common but easily misdiagnosed tumor in children. AimsTo differentiate pilomatricoma from other common subcutaneous nodules in children. Patients/MethodsMisdiagnosed subcutaneous nodules in four children were recorded. ResultsA red mass on a 7-year-old boy's head which had been misdiagnosed pyogenic granuloma was proved to be pilomatricoma. A red mass on an 8-month-old boy's face which had been misdiagnosed infantile hemangioma also turned to be pilomotricoma. A red mass on a 21-month-old girl's breast, which had been misdiagnosed pilomatricoma, was proved to be infantile myofibroma. A subcutaneous nodule under a 13-month-old girl's armpit, which had been misdiagnosed pilomatricoma, turned to be BCG-associated lymphadenitis. ConclusionsWhen a child with a subcutaneous nodule attends, pilomatricoma, vascular tumors, fibrous tumors, and BCG-associated lymphadenitis should be considered.