Teaching NeuroImages: Pericallosal curvilinear lipoma

Summary

  • 27yo F
  • c/c
    • presented to neurosurge dep
    • Hx of incidental finding of intracranial lesion
  • Ex
    • MRI
      • interhemispheric lipoma over corpus callosum
  • Dx
pericallosal lipoma
  1. tubulonodular
  2. curvilinear:
    • asymp
    • occasionally Sz, headache

Further

Terminology

Original

A 27-year-old woman presented to the neurosurgery department with a history of an incidental finding of an intracranial lesion. Neurologic examination was unremarkable. Cranial MRI revealed an interhemispheric lipoma over the corpus callosum (figure). A diagnosis of pericallosal curvilinear lipoma was made. Intracranial lipoma is a rare congenital malformation.1 Pericallosal region is the most common location of intracranial lipomas. Pericallosal lipoma can be divided into 2 morphologic subtypes: tubulonodular and curvilinear.2 The latter is mostly asymptomatic, occasionally presenting with seizures and headache, and has a low incidence of other accompanying anomalies. In this patient, surgical resection was not necessary, and regular follow-up was recommended.

Figure

Figure
Cranial MRI
Sagittal T1-weighted MRI demonstrates an interhemispheric slender hyperintense mass over the corpus callosum (A), with signal attenuation on fat suppression sequence (B).

References

  1. Rajan DS, Popescu A. Corpus callosum lipoma. Neurology 2012;78:1366.
  2. Yildiz H, Hakyemez B, Koroglu M, et al. Intracranial lipomas: importance of localization. Neuroradiology 2006; 48:1–7.