title: Magnetic resonance identification of an accessory submandibular duct and gland: an unusual variant.
abstract: We report a case of an accessory submandibular gland and duct which is extremely rare.
  
  
  METHODS
  A 20-year-old male presented with complaints of painful swelling in the right submandibular region. As a part of the radiological investigation, a radiograph occlusal view was taken digital sialography, magnetic resonance imaging and magnetic resonance sialography were performed.
  
  
  RESULTS
  Digital sialography revealed a small calculus distal to the punctum with diffuse dilatation of the main duct and intraglandular branches, which passed out spontaneously prior to magnetic resonance examination. The presence of an accessory submandibular duct was well delineated on both digital as well as magnetic resonance sialography.
  
  
  CONCLUSIONS
  Magnetic resonance sialography is helpful in delineating the anatomy of the submandibular duct non-invasively and without associated radiation exposure. To the best of our knowledge this is the first report of magnetic resonance identifying an accessory submandibular duct and gland.
authors.affiliation: Department of Radio-diagnosis, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: A
authors.initials: A
authors.lastname: Gadodia
authors.forename: A
authors.initials: A
authors.lastname: Seith
authors.forename: Z
authors.initials: Z
authors.lastname: Neyaz
authors.forename: R
authors.initials: R
authors.lastname: Sharma
authors.forename: A
authors.initials: A
authors.lastname: Thakkar
mesh_terms: D000328:Adult; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D012465:Salivary Duct Calculi / Q000175:diagnosis*; D018987:Salivary Ducts; D012796:Sialography / Q000379:methods*; D013364:Submandibular Gland Diseases / Q000175:diagnosis*