1. A Hard Calculus: Submandibular Sialolithiasis
Satvinder Singh Bakshi, MS, DNB 
The American Journal of Medicine 
Volume 130, Issue 2, Pages (February 2017)
DOI: /j.amjmed
Copyright © 2016 Elsevier Inc. Terms and Conditions

2. Figure 1
An oblique x-ray view of the patient's mandible showing a radiopaque stone in the submandibular duct (upper arrow). The lower arrow is pointing to the hyoid bone, which served as an anatomic reference point.
The American Journal of Medicine  , DOI: ( /j.amjmed )
Copyright © 2016 Elsevier Inc. Terms and Conditions

3. Figure 2 The sialolith was surgically removed.
The American Journal of Medicine  , DOI: ( /j.amjmed )
Copyright © 2016 Elsevier Inc. Terms and Conditions