Immunohistochemistry: An indispensable aid in diagnosis and management of infantile myofibroblastoma.

Myofibroma is a benign tumor of myofibroblasts occurring commonly in infants and children. It can occur as a solitary lesion or as multiple lesions in the soft tissues or intraosseously. The presence of the solitary lesion is common in the soft tissues of the head-and-neck region but rare in jawbones. Histologically, it has a biphasic pattern of presentation and mimics spindle cell tumors. Immunohistochemistry is essential for its confirmatory diagnosis. This article describes a case of this rare lesion presenting as a solitary lesion in the left body of the mandible in a 7-month-old boy baby. The diagnostic and therapeutic challenges have been discussed.