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Ultrasonography is widely reported as being very helpful in de- tecting salivary stones. As many as 90% of all stones larger than 2 mm can be detected as echodense spots on Ultrasonography.11 However, detection of small calculi may be difficult with ultraso- nography Computed tomography (CT) is also highly diagnostic.12 When located in the submandibular gland itself a panoramic radiograph may be helpful.
However, salivary stones are not usually associated with any other disease and they are not indicative of abnormal calcium levels in the body.
(4) Gout is the only systemic illness known to predispose to salivary stone formation, (4) although in gout the stones are made predominantly of uric acid.
However, excision of a salivary stone of such a large size is a rare medical entity.