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Dynamic Multidetector CT of Breast Tumors: Diagnostic Features and Comparison with Conventional Techniques

Masaaki Inoue1, Toshiko Sano1, Ryousuke Watai1, Ryuuichirou Ashikaga1, Kazuki Ueda2, Masahiro Watatani2 and Yasumasa Nishimura1

1 Department of Radiology, Kinki University School of Medicine, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan.
2 Department of Surgery, Kinki University School of Medicine, Osaka 589-8511, Japan.



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  		Fig. 1. —Graph shows time-density curve pattern for 173 breast lesions detected in 149 women on multidetector CT. Types of time-density curve patterns were categorized as washout (abrupt decline in density 3-8 min after contrast material injection), plateau (stabilized enhancement with no change in density 3-8 min after injection), or persistent (increasing density throughout 8-min period).

 


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  		Fig. 2A. —40-year-old woman with invasive ductal carcinoma in left breast. Sagittal multiplanar reconstructions of multidetector CT scans show two irregular, spiculated masses (arrows) with homogeneous enhancement in left upper quadrant of breast. Tumor in A is 2 cm inward from nipple and tumor in B is behind nipple.

 


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  		Fig. 2B. —40-year-old woman with invasive ductal carcinoma in left breast. Sagittal multiplanar reconstructions of multidetector CT scans show two irregular, spiculated masses (arrows) with homogeneous enhancement in left upper quadrant of breast. Tumor in A is 2 cm inward from nipple and tumor in B is behind nipple.

 


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  		Fig. 2C. —40-year-old woman with invasive ductal carcinoma in left breast. Oblique mediolateral mammogram shows two irregularly shaped masses (one indicated by arrows and the other by arrowheads) with spiculated margins corresponding to the masses seen in A and B.

 


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  		Fig. 3A. —61-year-old woman with mucinous carcinoma in left breast. Sagittal multiplanar reconstruction of multidetector CT scan shows lobulated mass with smooth margin and rim enhancement.

 


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  		Fig. 3B. —61-year-old woman with mucinous carcinoma in left breast. Oblique mediolateral mammogram shows lobulated circumscribed mass (arrows) with coarse calcifications in regional distribution corresponding to mass shown in A.

 


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  		Fig. 3C. —61-year-old woman with mucinous carcinoma in left breast. Sonogram shows lobulated, circumscribed, hypoechoic mass (arrows).

 


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  		Fig. 4A. —50-year-old woman with ductal carcinoma in situ in right breast. Sagittal multiplanar reconstruction of multidetector CT scan shows segmental enhancement (arrows) in right lower outer quadrant.

 


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  		Fig. 4B. —50-year-old woman with ductal carcinoma in situ in right breast. Oblique mediolateral mammogram shows irregular mass (arrows) with spiculated margin corresponding to enhanced area shown in A.

 


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  		Fig. 4C. —50-year-old woman with ductal carcinoma in situ in right breast. Sonogram shows irregular, hypoechoic mass (arrows) with irregular margin.

 


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  		Fig. 5A. —48-year-old woman with mucinous carcinoma in left breast. Axial multiplanar reconstruction of multidetector CT scan shows irregularly shaped mass (arrows) with spiculated margin and homogeneous enhancement beneath nipple.

 


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  		Fig. 5B. —48-year-old woman with mucinous carcinoma in left breast. On craniocaudal mammogram, mass and calcification cannot be detected. Sonography also did not reveal mass or calcification.

 


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  		Fig. 6A. —38-year-old woman with invasive lobular carcinoma in left breast. Coronal multiplanar reconstruction of multidetector CT (MDCT) scan shows heterogeneous segmental enhancement (arrows) in upper half of breast.

 


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  		Fig. 6B. —38-year-old woman with invasive lobular carcinoma in left breast. Craniocaudal mammogram shows only indistinct irregularly shaped 2.0-cm mass (arrows) in outer portion of breast. Histologic findings of tumor invasion were consistent with MDCT findings. Thus, MDCT was superior to mammography and sonography in depiction of margin of tumor invasion.

 

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