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Differentiation of Cavernous Hemangioma from Schwannoma of the Orbit: A Dynamic MRI Study

Atsuo Tanaka1, Futoshi Mihara1, Takashi Yoshiura1, Osamu Togao1, Yasuo Kuwabara1, Yoshihiro Natori2, Tomio Sasaki2 and Hiroshi Honda1

1 Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-1-1, Higashi-ku, Fukuoka 812-8582, Japan.
2 Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan.



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  		Fig. 1A. —49-year-old woman with cavernous hemangioma. Conventional images show homogeneous density and signal intensity on unenhanced CT scan (A) and T1-weighted (B) and T2-weighted (C) fast spin-echo images.

 


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  		Fig. 2A. —71-year-old man with schwannoma. Conventional images show homogeneous density and signal intensity on unenhanced CT scan (A) and T1-weighted (B) and T2-weighted (C) fast spin-echo images.

 


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  		Fig. 1B. —49-year-old woman with cavernous hemangioma. Conventional images show homogeneous density and signal intensity on unenhanced CT scan (A) and T1-weighted (B) and T2-weighted (C) fast spin-echo images.

 


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  		Fig. 1C. —49-year-old woman with cavernous hemangioma. Conventional images show homogeneous density and signal intensity on unenhanced CT scan (A) and T1-weighted (B) and T2-weighted (C) fast spin-echo images.

 


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[in a new window]
  		Fig. 2B. —71-year-old man with schwannoma. Conventional images show homogeneous density and signal intensity on unenhanced CT scan (A) and T1-weighted (B) and T2-weighted (C) fast spin-echo images.

 


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[in a new window]
  		Fig. 2C. —71-year-old man with schwannoma. Conventional images show homogeneous density and signal intensity on unenhanced CT scan (A) and T1-weighted (B) and T2-weighted (C) fast spin-echo images.

 


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  		Fig. 3A. —61-year-old woman with cavernous hemangioma. Dynamic MR images obtained at 0 and 20 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from one central point of tumor.

 


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  		Fig. 3B. —61-year-old woman with cavernous hemangioma. Dynamic MR images obtained at 0 and 20 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from one central point of tumor.

 


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  		Fig. 3C. —61-year-old woman with cavernous hemangioma. Dynamic MR images obtained at 40, 60, 80, 100, 120, and 300 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from one central point of tumor.

 


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  		Fig. 3D. —61-year-old woman with cavernous hemangioma. Dynamic MR images obtained at 40, 60, 80, 100, 120, and 300 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from one central point of tumor.

 


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  		Fig. 3E. —61-year-old woman with cavernous hemangioma. Dynamic MR images obtained at 40, 60, 80, 100, 120, and 300 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from one central point of tumor.

 


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  		Fig. 3F. —61-year-old woman with cavernous hemangioma. Dynamic MR images obtained at 40, 60, 80, 100, 120, and 300 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from one central point of tumor.

 


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  		Fig. 3G. —61-year-old woman with cavernous hemangioma. Dynamic MR images obtained at 40, 60, 80, 100, 120, and 300 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from one central point of tumor.

 


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  		Fig. 3H. —61-year-old woman with cavernous hemangioma. Dynamic MR images obtained at 40, 60, 80, 100, 120, and 300 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from one central point of tumor.

 


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  		Fig. 4A. —25-year-old man with schwannoma. Dynamic MR images obtained at 0, 20, 40, 60, 80, and 100 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from marginal wide area of tumor.

 


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  		Fig. 4B. —25-year-old man with schwannoma. Dynamic MR images obtained at 0, 20, 40, 60, 80, and 100 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from marginal wide area of tumor.

 


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[in a new window]
  		Fig. 4C. —25-year-old man with schwannoma. Dynamic MR images obtained at 0, 20, 40, 60, 80, and 100 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from marginal wide area of tumor.

 


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[in a new window]
  		Fig. 4D. —25-year-old man with schwannoma. Dynamic MR images obtained at 0, 20, 40, 60, 80, and 100 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from marginal wide area of tumor.

 


View larger version (116K):

[in a new window]
  		Fig. 4E. —25-year-old man with schwannoma. Dynamic MR images obtained at 0, 20, 40, 60, 80, and 100 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from marginal wide area of tumor.

 


View larger version (117K):

[in a new window]
  		Fig. 4F. —25-year-old man with schwannoma. Dynamic MR images obtained at 0, 20, 40, 60, 80, and 100 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from marginal wide area of tumor.

 


View larger version (110K):

[in a new window]
  		Fig. 4G. —25-year-old man with schwannoma. Dynamic MR images obtained at 120 and 300 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from marginal wide area of tumor.

 


View larger version (99K):

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  		Fig. 4H. —25-year-old man with schwannoma. Dynamic MR images obtained at 120 and 300 sec, respectively, after administration of gadopentetate dimeglumine show enhancement starts from marginal wide area of tumor.

 

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