Neuroradiological signs: classic types

Evidence-based neurology checklist on neuroradiological signs: classic types: Dural tail: on contrast MRI Meningioma Primary central nervous system lymphoma (PCNSL) Sarcoidosis Schwannomas Metastases Syphilis Tram track sign: on MRI or contrast CT Puff of smoke: on angiography Eye of the tiger on…

Dural tail: on contrast MRI

  • Meningioma
  • Primary central nervous system lymphoma (PCNSL)
  • Sarcoidosis
  • Schwannomas
  • Metastases
  • Syphilis

Tram track sign: on MRI or contrast CT

Puff of smoke: on angiography

Eye of the tiger on MRI: features

Eye of the tiger on MRI: causes

Hot cross bun sign

Pulvinar/hockey stick sign

Salt and pepper sign

Tigroid and leopard skin signs

Ears of the lynx sign

Hummingbird sign

Face of the giant panda

Butterfly sign

Lentiform fork sign

Owl’s eye sign: on axial spinal MRI

Snake eyes sign: on spinal MRI

Swallow tail appearance

References

  1. Chavhan GB, Shroff MM. Twenty classic signs in neuroradiology: A pictorial essay. Indian J Radiol Imaging 2009; 19:135-145.
  2. Barra FR, Goncalves G, de Lima Matos, et al. Signs in neuroradiology-part 2. Radiol Bras 2011; 44:129-133.
  3. Hayflick SJ, Hartman M, Coryell J, Gitschier J, Rowley H. Brain MRI in neurodegeneration with brain iron accumulation with and without PANK2 mutations. Am J Neuroradiol 2006; 27:1230-1233.
  4. Gregory A, Hayflick SJ. Neurodegeneration with brain iron accumulation. Folia Neuropathol 2005; 43:286-296.
  5. Natera-Villalba E, Martínez-Castrillo JC, López-Sendón Moreno JL, et al. Eye-of-the-tiger sign with an unexpected pathological diagnosis. Mov Disord Clin Pract 2021; 9:98-103. 
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