Pilomatricoma with extensive ossification and marrow formation: a case report and review of literature

Pilomatricomas are follicular cystic neoplasms involving the dermis and subcutaneous tissue and have a benign behavior. Clinically they may present as hard papules or nodules. Histologically, they comprise of mummified cells, fibrillary bodies and trichohyaline granules. Excision is usually curative. Here we present a case of female patient with a lesion on back that turned out to be pilomatricoma but with extensive ossification.