A Case of Ethmoidal Antrolith

Abstract

A case of ethmoidal antrolith was reported. The patient was a 63-year-old male who had worked in the firtilizer industry for 20 years. He visited our clinic on August, 31, 1982, complaining of left nasal obstruction. The caliculus located in the left ethmoid sinus was easily removed by surgery. The caliculus was gray, oval shaped, and weighed 20 grammes (32×26×21mm) without core. This is third largest stone previously reported in Japan. X-ray microanalyser methodology revealed that the main component of caliculus was calcium phosphate and was similar to hydroxy apatite.