Three cases of foreign bodies that fell into the paranasal sinuses through injury are reported.
Case 1. A 20-year-old man who was involved in an automobile accident was found to have a piece of glass lodged in his frontal sinus.
Case 2. A 42-year-old woman who was involved in a car accident was found to have many pieces of glass which had penetrated into the left maxillary sinus.
Case 3. A 60-year-old woman complained of a fistula in the right infraorbital region which was apparently caused by a bamboo splinter when she fell.
In all these cases, the foreign bodies were removed succesfully and the patients recovered uneventfully.
Ninety-two cases of foreign bodies of the paranasal sinuses appearing in the Japanese literature are reviewed and discussed.