* Frontal sinusitis, acute or chronic. * Frontal trauma, usually blunt. * Some cases have been seen in a context of intranasal substance abuse (cocaine, methamphetamine). * Post-surgical: after frontal sinus reconstruction
Pott's puffy tumor
Butcher's wart
Cock's peculiar tumour
Askin's tumor
Koenen's tumor
Milker's nodule
Kaposi's sarcoma
Sister Mary Joseph nodule