“…Antroliths are rare calcified masses generally located in the anterior nasal cavity or maxillary sinus and are of endogenous or exogenous origin. Among the exogenous causes are grains, wood, small stone fragments, seeds, and insects, while endogenous causes include blood clots, tooth fragments, and mucosal necrosis [ 2 , [5] , [6] , [7] , [8] , [9] ]. The exact pathogenesis of antroliths are not clear, although it is suspected that generally a foreign body causes surrounding inflammation, encouraging mineral deposition and serving acts as a nidus for mineral deposition [ 3 , 4 ], over a span of years [ 10 , 11 ].…”