Two Cases of Unusual Size Sialolith in

Sialolithiasis is the occurrence of calcareous concretions in the salivary ducts or glands. It is the most common pathological condition affecting the major salivary gland. It has an incidence of 0.012% in the adult population [1]. Males are more commonly affected than females with a peak incidence in 4th to 6th decades of life [2]. Most salivary calculi occur in submandibular gland (80-90%) followed by parotid gland (5-20%) and sublingual and minor salivary glands (1-2%) [3]. The reasons for commonest involvement of submandibular gland and its ducts are, tenacity of sub mandibular saliva, which because of its high mucin contents adheres to any foreign particles and duct of this gland is long, tortuous, & upward in its course. Also it is important to note that sialolith in the submandibular gland is more common in the duct compared to glandular parenchyma. The shape of sialolith may be round, ovoid or elongated and its size may range from few millimeters to 2cm or more. Stones over 10mm are reported as unusual in size. The involved duct may contain one or more stones. They are usually yellow. Calculi generally consist of mixture of calcium phosphates, calcium carbonates together with an organic matrix [4].