Extracerebral Cavernous Hemangioma of the Cavernous Sinus: Diagnosis with MR Imaging and Labeled Red Cell Blood Pool Scintigraphy
Giovanni C. Salanitria,
Stephen L. Stuckeya and
Michael Murphyb
a Department of Radiological Services, Alfred Hospital, Melbourne, Victoria, Australia
b Department of Neurosurgery, St. Vincent’s Hospital, Melbourne, Victoria, Australia
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FIG 1. Cavernous hemangioma.
A, Coronal T1-weighted image demonstrates a hypointense left parasellar extraaxial lesion.
B, Axial T2 image demonstrates a homogeneous markedly hyperintense lesion.
C, Initial coronal gadolinum-enhanced T1-weighted image demonstrates patchy peripheral lesion enhancement.
D, Subsequent axial gadolinum-enhanced T1-weighted image now demonstrates homogeneous lesion enhancement with centripetal "filling in."
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FIG 2. Cavernous hemangioma.
Coronal (A) and axial (B) labeled red cell blood pool SPECT images demonstrates progressive increase in tracer accumulation in the left parasellar region at 30 minutes (top) and at 3 hours (bottom).
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FIG 3. Meningioma.
A, Axial T1-weighted image demonstrates a hypointense left extraaxial parasellar lesion.
B, Initial coronal gadolinum-enhanced T1-weighted image demonstrates intense uniform enhancement of the lesion.
C, Subsequent axial gadolinum-enhanced T1-weighted image demonstrates similar uniform enhancement characteristics in contrast to the heterogeneous centripetally "filling-in" enhancement pattern exhibited by the cavernous hemangioma.
D, Three-hour axial-labeled red cell blood pool SPECT images demonstrate a photopenic left cavernous sinus region.
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FIG 4. Chordoma.
A, Axial T2-weighted image demonstrates a hyperintense left extraaxial parasellar lesion (white arrow).
B, Three-hour axial-labeled red cell blood pool SPECT images demonstrates a photopenic left cavernous sinus region, appearance similar to Figure 3D.
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FIG 5. Chondrosarcoma.
A, Axial T2-weighted image demonstrates a hyperintense left extraaxial parasellar lesion.
B, Axial labeled red cell blood pool SPECT images at 30 minutes (top) and 3 hours (bottom) demonstrate a photopenic left cavernous sinus region, appearances similar to Figures 3D and 4B.
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