Astrocytoma

Astrocytoma-A-Axi-T1WI.jpg

A

Astrocytoma-B-Axi-T2WI.jpg

B

Astrocytoma-C-Axi-T1+C.jpg

C

Astrocytoma-D-Cor-T1+c.jpg

D

Clinical History: 
This 31-year-old man presented to the neurology department with progressive dizziness for two months along with new-onset seizures, vomiting, and weakness. He reported no history of fever or traumatic head injury. An MRI was performed for further assessment.

Diagnosis:
Left frontal lobe astrocytoma.

MR Technique:
Scans were acquired with an 8-channel head coil at 1.5 T. (A) Axial pre-contrast spin echo T1-weighted (TR/TE 1866/11 ms, 320×192 matrix) and (B) fast spin echo T2-weighted (TR/TE 4000/107 ms) images were obtained in addition to (C) axial and (D) coronal fat-suppressed post-contrast spin echo T1-weighted images. All scans were obtained utilizing a 5 mm slice thickness.

Imaging Findings:
An intra-axial, heterogenously enhancing mass is present within the left frontal lobe adjacent to the falx with associated mass effect. The lesion demonstrates hyperintensity on T2 and irregular hypointensity on pre-contrast T1WI. Copious surrounding cerebral edema demonstrates low signal intensity on T2 and high signal intensity on pre-contrast T1WI.