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Patients with Breast Cancer: Differences in Color Doppler Flow and Gray-Scale US Features of Benign and Malignant Axillary Lymph Nodes¹

¹ From the Department of Diagnostic Radiology and Organ Imaging, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, NT, Hong Kong (W.T.Y., C.M.), and the Department of Medical Oncology, National University of Singapore, Singapore (J.C.). Received May 5, 1999; revision requested July 13; revision received August 9; accepted August 18. Address correspondence to W.T.Y.

View larger version (171K): [in a new window]   Figure 1a. Central perhilar vascularity on longitudinal color Doppler US images from two patients. (a) Simple hilar vessel (large arrow) within a normal axillary node (small arrows). (b) Central hilar centrifugal branches seen as blue and red linear structures within a normal axillary node (arrows).

View larger version (135K): [in a new window]   Figure 1b. Central perhilar vascularity on longitudinal color Doppler US images from two patients. (a) Simple hilar vessel (large arrow) within a normal axillary node (small arrows). (b) Central hilar centrifugal branches seen as blue and red linear structures within a normal axillary node (arrows).

View larger version (157K): [in a new window]   Figure 2a. Central vascularity on (a) transverse and (b) longitudinal color Doppler US images from two patients. (a) Scattered spots of vessel signals (arrowheads) within rounded nodes with no central hila (arrows). (b) Vessel segments (arrows) radially aligned within a node with partially obliterated fatty hilum.

View larger version (148K): [in a new window]   Figure 2b. Central vascularity on (a) transverse and (b) longitudinal color Doppler US images from two patients. (a) Scattered spots of vessel signals (arrowheads) within rounded nodes with no central hila (arrows). (b) Vessel segments (arrows) radially aligned within a node with partially obliterated fatty hilum.

View larger version (188K): [in a new window]   Figure 3. Peripheral vascularity on transverse color Doppler US image. Image shows linear vascularity (straight arrows) along the periphery of a node (curved arrows) with a low longitudinal-transverse axis ratio.

View larger version (34K): [in a new window]   Figure 4. Graph of nodal vascular distribution in benign and malignant disease for the combined group. Flow is present in benign and malignant nodes. Malignant nodes show greater peripheral flow than benign nodes, while benign nodes show greater central flow than malignant nodes.