[Pott's puffy tumor - severe course of a sinusitis].

The disease pattern <<Pott's puffy tumour>> describes a local frontal-bone osteomyelitis that arises from an external infection with consecutive sub-periostal expansion. Symptoms may develop slowly or not at all with a mostly indolent protuberance on the patient's forehead. Symptomatic illness often indicates secondary morbidities. Here, we present a complicated case with intracranial dissemination.