Riedel's thyroiditis MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Furqan M M. M.B.B.S[2]


MRI may be helpful in the diagnosis of Riedel's thyroiditis. Findings on MRI suggestive of Riedel's thyroiditis include focal, homogeneous hypointensity in T1 and T2.


MRI may be helpful in the diagnosis of Riedel's thyroiditis. Findings on MRI suggestive of Riedel's thyroiditis include:[1][2][3][4]

  • Focal, homogeneous hypointensity in T1
  • Focal, homogeneous hypointensity in T2
  • Marked homogeneous enhancement after gadolinium administration

Riedel's thyroiditis CT scan showing mass encircling trachea and thyroid cartilage with invasion of bilateral tracheoesophageal groove and esophagus (A and B); Riedel's thyroiditis MRI demonstrating that thyroid mass was homogeneously hypo-intense on both T1- and T2-weighted images (C and D); Riedel's thyroiditis PET scan revealing that both thyroid lobes were diffusely enlarged and showed strong fluorodeoxyglucose uptake (E and F) Image courtesy of Gyu Young and Yong Sang Lee"A case of Riedel's thyroiditis".


  1. Papi G, Corrado S, Cesinaro AM, Novelli L, Smerieri A, Carapezzi C (2002). "Riedel's thyroiditis: clinical, pathological and imaging features". Int. J. Clin. Pract. 56 (1): 65–7. PMID 11831840.
  2. Papi G, LiVolsi VA (2004). "Current concepts on Riedel thyroiditis". Am. J. Clin. Pathol. 121 Suppl: S50–63. PMID 15298150.
  3. Lo JC, Loh KC, Rubin AL, Cha I, Greenspan FS (1998). "Riedel's thyroiditis presenting with hypothyroidism and hypoparathyroidism: dramatic response to glucocorticoid and thyroxine therapy". Clin. Endocrinol. (Oxf). 48 (6): 815–8. PMID 9713573.
  4. Pérez Fontán FJ, Cordido Carballido F, Pombo Felipe F, Mosquera Oses J, Villalba Martin C (1993). "Riedel thyroiditis: US, CT, and MR evaluation". J Comput Assist Tomogr. 17 (2): 324–5. PMID 8454764.

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