Unveiling the enigma: A rare case of eosinophilic granuloma

Eosinophilic granuloma is a benign and mildest subtype of Langerhans cell histiocytosis. It has a predilection for males with age less than ten years. It presents with localized swelling in the skull, long bones, or rarely mandible. We report the case of a 17-year-old male who presented with swelling in the frontal area of his head which was tender. On radiographic imaging, ovoid lytic lesions with beveled edges were noticed. On computed tomography multiple osteolytic lesions in the bilateral frontal region focally eroding both the inner and outer cranial tables were seen. Upon confirmation of the diagnosis patient was taken up for surgical intervention. The calvarial deformity was closed by a titanium mesh.