Bronchogenic carcinoma presenting as a periapical infection.

This case report describes a metastatic bronchogenic deposit involving the lower lip and the adjacent bone in the lower incisor region. The presenting symptoms were very similar to those of a dentoalveolar infection and extraction of the lower incisor teeth failed to provide any relief. Comparison of radiographs taken 6 months earlier suggested that the metastatic deposit very probably spread from the lower labial sulcus into a site of periapical infection, involving the lower incisors and the adjacent bone.