전두와에 발생한 비석증 1례

Rhinoliths are uncommon lesion and usually unilaterally developed. They are usually found on the floor of nose in the inferior meatus or between the inferior turbinate and septum and very rarely in maxillary sinus. They have a foreign body nucleus of bacteria, pus cells, mucus, crust or some foreign material from outside of body. It’s composition is usually calcium and magnesium salt, which are originated from desiccated mucus, rhinorrhea, tears by the air flow in nasal cavity. This is the reason why they are common in nasal cavity and very rare in maxillary sinus. However there is no report of rhinolith developed in frontal sinus and ethmoid sinus. Recently, we have experienced a case of the rhinolith in anterior ethmoid sinus and frontal recess of a 48-years old man. Under local anesthesia, the mass measuring 1.5 × 0.7 × 0.4 cm was removed through sinoscope.