Value of Combined FDG PET and MR Imaging in the Evaluation of Suspected Recurrent Local-Regional Breast Cancer: Preliminary Experience
Peter B. Hathaway, MD1,
David A. Mankoff, MD, PhD1,
Kenneth R. Maravilla, MD1,
Mary M. Austin-Seymour, MD2,
Georgiana K. Ellis, MD3,
Julie R. Gralow, MD3,
Antoinette A. Cortese, MD1,
Cecil E. Hayes, PhD1 and
Roger E. Moe, MD4
1 Departments of Radiology (P.B.H., D.A.M., K.R.M., A.A.C., C.E.H.)
2 Radiation Oncology (M.M.A.S.)
3 Division of Medical Oncology (G.K.E., J.R.G.)
4 Department of Surgery (R.E.M.), University of Washington School of Medicine, Box 356113, Room NN203, 1959 NE Pacific St, Seattle, WA 98195-7115.

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Figure 1a. Patient 5. (a) Oblique sagittal T1-weighted SE MR image (650/16) shows a mass (curved arrows) within the pectoralis major muscle that involves the chest wall; axillary artery (arrowhead), axillary vein (open arrow), and brachial plexus (straight solid arrow) are seen. (b) Coronal FDG PET image shows intense uptake of tracer in the right axilla. Areas of high FDG uptake appear dark in the image. Uptake is seen in the main tumor mass (arrow) and satellite lesions (arrowheads), which likely represent nodes. (c) Coronal T1-weighted SE MR image (600/10) shows no evidence of neurovascular invasion; axillary artery (arrows) and brachial plexus (arrowheads) are seen. Imaging findings were confirmed at surgery.
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Figure 1c. Patient 5. (a) Oblique sagittal T1-weighted SE MR image (650/16) shows a mass (curved arrows) within the pectoralis major muscle that involves the chest wall; axillary artery (arrowhead), axillary vein (open arrow), and brachial plexus (straight solid arrow) are seen. (b) Coronal FDG PET image shows intense uptake of tracer in the right axilla. Areas of high FDG uptake appear dark in the image. Uptake is seen in the main tumor mass (arrow) and satellite lesions (arrowheads), which likely represent nodes. (c) Coronal T1-weighted SE MR image (600/10) shows no evidence of neurovascular invasion; axillary artery (arrows) and brachial plexus (arrowheads) are seen. Imaging findings were confirmed at surgery.
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Figure 1b. Patient 5. (a) Oblique sagittal T1-weighted SE MR image (650/16) shows a mass (curved arrows) within the pectoralis major muscle that involves the chest wall; axillary artery (arrowhead), axillary vein (open arrow), and brachial plexus (straight solid arrow) are seen. (b) Coronal FDG PET image shows intense uptake of tracer in the right axilla. Areas of high FDG uptake appear dark in the image. Uptake is seen in the main tumor mass (arrow) and satellite lesions (arrowheads), which likely represent nodes. (c) Coronal T1-weighted SE MR image (600/10) shows no evidence of neurovascular invasion; axillary artery (arrows) and brachial plexus (arrowheads) are seen. Imaging findings were confirmed at surgery.
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Figure 2a. Patient 1. (a) Coronal contrast mediumenhanced T1-weighted SE image (700/10; fat saturation) and (b) coronal STIR MR image (4,000/43/160) of the left shoulder region show diffuse thickening, increased signal intensity, and contrast enhancement of the medial and lateral cords of the brachial plexus (arrows). (c, d) FDG PET images of two different coronal planes show abnormal linear tracer uptake in the left axilla (arrowheads in c) and unsuspected metastatic tumor within a left cervical lymph node (arrow in d). FDG was injected through a right-sided central venous catheter. Correlation between MR and FDG PET images resulted in a final diagnosis of brachial plexus invasion by metastatic tumor. Surgery was deferred because of the imaging findings.
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Figure 2b. Patient 1. (a) Coronal contrast mediumenhanced T1-weighted SE image (700/10; fat saturation) and (b) coronal STIR MR image (4,000/43/160) of the left shoulder region show diffuse thickening, increased signal intensity, and contrast enhancement of the medial and lateral cords of the brachial plexus (arrows). (c, d) FDG PET images of two different coronal planes show abnormal linear tracer uptake in the left axilla (arrowheads in c) and unsuspected metastatic tumor within a left cervical lymph node (arrow in d). FDG was injected through a right-sided central venous catheter. Correlation between MR and FDG PET images resulted in a final diagnosis of brachial plexus invasion by metastatic tumor. Surgery was deferred because of the imaging findings.
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Figure 2c. Patient 1. (a) Coronal contrast mediumenhanced T1-weighted SE image (700/10; fat saturation) and (b) coronal STIR MR image (4,000/43/160) of the left shoulder region show diffuse thickening, increased signal intensity, and contrast enhancement of the medial and lateral cords of the brachial plexus (arrows). (c, d) FDG PET images of two different coronal planes show abnormal linear tracer uptake in the left axilla (arrowheads in c) and unsuspected metastatic tumor within a left cervical lymph node (arrow in d). FDG was injected through a right-sided central venous catheter. Correlation between MR and FDG PET images resulted in a final diagnosis of brachial plexus invasion by metastatic tumor. Surgery was deferred because of the imaging findings.
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Figure 2d. Patient 1. (a) Coronal contrast mediumenhanced T1-weighted SE image (700/10; fat saturation) and (b) coronal STIR MR image (4,000/43/160) of the left shoulder region show diffuse thickening, increased signal intensity, and contrast enhancement of the medial and lateral cords of the brachial plexus (arrows). (c, d) FDG PET images of two different coronal planes show abnormal linear tracer uptake in the left axilla (arrowheads in c) and unsuspected metastatic tumor within a left cervical lymph node (arrow in d). FDG was injected through a right-sided central venous catheter. Correlation between MR and FDG PET images resulted in a final diagnosis of brachial plexus invasion by metastatic tumor. Surgery was deferred because of the imaging findings.
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Figure 3a. Patient 2. (a) Coronal T1-weighted SE MR image (600/10) shows nonspecific intermediate-intensity soft tissue (arrowheads) in the left axilla; other MR images revealed axillary vein encasement (not shown), but no evidence of brachial plexus invasion was seen. (b) Coronal FDG PET image shows intense uptake in the left axillary region (arrow). Recurrent tumor was confirmed at surgery, but unexpected invasion of the brachial plexus and axillary artery prevented complete resection.
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Figure 3b. Patient 2. (a) Coronal T1-weighted SE MR image (600/10) shows nonspecific intermediate-intensity soft tissue (arrowheads) in the left axilla; other MR images revealed axillary vein encasement (not shown), but no evidence of brachial plexus invasion was seen. (b) Coronal FDG PET image shows intense uptake in the left axillary region (arrow). Recurrent tumor was confirmed at surgery, but unexpected invasion of the brachial plexus and axillary artery prevented complete resection.
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Copyright © 1999 by the Radiological Society of North America.