Different Signal Intensities between Intra- and Extracranial Components in Jugular Foramen Meningioma: An Enigma
Taro Shimonoa,
Fumiharu Akaib,
Akira Yamamotoc,
Mitsunori Kanagakic,
Yasutaka Fushimic,
Masayuki Maedad and
Yukio Mikic
a Department of Radiology, Kinki University School of Medicine, Osaka, Japan
b Department of Neurosurgery, Kinki University School of Medicine, Osaka, Japan
c Department of Nuclear Medicine and Diagnostic Imaging, Kyoto University Hospital, Kyoto, Japan
d Department of Radiology, Mie University School of Medicine, Mie, Japan
View larger version (119K):
[in a new window]
|
FIG 1. MR images of right JFM obtained in a 46-year-old woman (patient 6).
A, B, Transverse T1-weighted images (400/9).
C, D, Transverse T2-weighted images (4,100/90).
E, F, Transverse postcontrast T1-weighted images (400/20).
MR signal intensity of the intracranial component (arrow in A, C, and E) for JFM is higher than that of the extracranial component (arrow in B, D, and F) on T1-, T2- and postcontrast T1-weighted images.
| |
View larger version (133K):
[in a new window]
|
FIG 2. MR images of left JFM obtained in a 48-year-old woman (patient 7).
A, B, Transverse T1-weighted images (500/15).
C, D, Transverse T2-weighted images (4,000/100).
E, F, Transverse postcontrast T1-weighted images (500/15).
MR signal intensity of intracranial component (arrow in A, C, and E) for JFM is higher than that of the extracranial component (arrow in B, D, and F) on T1-, T2-, and postcontrast T1-weighted images.
| |
View larger version (89K):
[in a new window]
|
FIG 3. Microscopic specimens from left JFM obtained in a 48-year-old woman (patient 7, same patient as Figure 2; hematoxylin-eosin; original magnification x 20).
A, Histologic examination of intracranial component of JFM shows densely packed tumor cells with sparse interstitial collagen bundles.
B, Histologic examination of extracranial component shows isolated tumor cells surrounded by matrix rich in collagen fibers.
| |
