抄録
We describe 2 patients injured in the maxillofacial region while using a power lawn mower (lawn mower). One patient was a 82-year-old man who accidentally fell while using a lawn mower and collided with the edge of a lawn mower operated by a fellow worker. The upper lip, cheek, neck, and shoulder were severely cut, and the mandible was fractured. The other patient was a 56-year-old woman in whom a fragment of the broken edge of a lawn mower operated by herself stuck the upper lip. The fragment was not noticed, and a tumor developed 2 months later. The tumor containing the fragment was excised.