The "target sign": is it a specific sign of CNS tuberculoma?

Neuroradiology. 1996 Aug;38(6):547-50. doi: 10.1007/BF00626095.

Abstract

In brain lesions, the target sign has been defined as a central nidus of calcification or central enhancement surrounded by a ring of enhancement. It has been considered a pathognomonic finding of central nervous system (CNS) tuberculoma. The purpose of this report is to demonstrate that the target sign related to central enhancement is a nonspecific finding and may lead to erroneous diagnosis of CNS tuberculoma.

MeSH terms

  • AIDS-Related Opportunistic Infections / diagnosis*
  • Adult
  • Aged
  • Brain / pathology
  • Brain Abscess / diagnosis
  • Brain Neoplasms / diagnosis
  • Diagnosis, Differential
  • Female
  • Humans
  • Lymphoma, AIDS-Related / diagnosis
  • Magnetic Resonance Imaging*
  • Male
  • Seizures / etiology
  • Tomography, X-Ray Computed*
  • Toxoplasmosis, Cerebral / diagnosis
  • Tuberculoma, Intracranial / diagnosis*