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Jugular Paraganglioma - Rads

last modified on: Sat, 05/06/2017 - 18:13

Jugular Paraganglioma

  •  Also known as: glomus jugulare paraganglioma, glomus jugulotympanicum paraganglioma, jugular foramen paraganglioma, chemodectoma
  •  Benign tumor arising from neural crest cells near the jugular foramen
  •  Look for bony erosion on CT and "salt and pepper" appearance on T1 and T2 MR
  •  Can arise from three distinct locations: the jugular bulb, the tympanic branch of CN IX, or the auricular branch of CN X
  •  Large at presentation (2-6 cm) with poor margination suggestive of malignancy; spreads most commonly superolaterally to middle ear
  •  On CT: look for permeative-destuctive bone changes, especially jugular spine erosion on non-contrast; intense enhancement with contrast
  •  ON MR: "salt" appearance on T1 (white dots), "pepper" appearance on T2 (black dots), hyperintense and good spread definitinon on post-contrast T1
  •  Occurs most commonly btween ages 40-60 with a 1:3 male to female predominance