Axial post-contrast T1-W MRI shows homogeneous and avid enha | Figure 1

CincyKidsRad

Cincinnati Children's Radiology

Axial post-contrast T1-W MRI shows homogeneous and avid enhancement of the mass (arrow). There is also enhancement of the dural tail (arrowhead). Diagnostic imaging findings characteristic of a meningioma include extra-axial location, broad dural base or a dural tail, homogeneous on all imaging sequences, and a well-circumscribed margin.

#FridayQuizDay #Quiz #FridayQuiz

Why you should join Figure 1

Similar cases


Axial (image 1) and coronal (image 2) T1-weighted, axial T2 weighted (image 3), and axial T1-weighted postcontrast (image 4) MRI show the lobulated mass arising from the glomus of the left choroid plexus. The mass diffusely enhances. Choroid plexus papilloma and choroid plexus carcinoma are the most common choroid plexus tumors. They are most commonly diagnosed in children younger than 5 years of age. Papillomas cannot be reliably distinguished from carcinoma. However, the homogeneous enhancement pattern is more common in patients with papilloma.


26 years old, male, headache and visual field loss. MRI shows several extra-axial images with dural tail, the biggest one is about 8 x 6 x 5 cm in left occipital region, with a noticeable mass effect and midline displacement about 3 cm. Diagnosis: Meningioma. We performed a gross total resecction (Simpson II) of the occipital lesion. Picture 2 shows the specimen. Pacient discharged at 2nd post-op day with no neurologic deficit added. Headache resolved. Pending campimetry reassessment.


Coronal T1-weighted image (image 1) shows a meningioma (arrow) at the right cerebellar pontine angle. After contrast was administered (image 2), there is diffuse enhancement of the lesion with minimal thickening and irregularity of the adjacent petro clival ligament and lateral margin of the right tentorium. Enhancing cerebellar pontine angle masses typically represent either a vestibular schwannoma or a meningioma. While this is the most common location for a meningioma in the posterior fossa, vestibular schwannomas are more common. Differentiation of the lesions can be difficult. The presence of a dural tail may help to confirm a diagnosis of meningioma.


Coronal (image 1) and axial (image 2) contrast-enhanced CT, axial T2-weighted (image 3), and T1-weighted postcontrast MRI (image 4) depict an extra-axial venous malformation (arrow) with tributary vessels (arrowhead) extending to the lesion. Extra-axial venous malformations are typically slow-flow venous lesions found in the middle cranial fossa near the cavernous sinus. Other dural locations along the convexity are uncommon.