Fig. 12.

A 62-year-old patient with generalized HER2-positive breast cancer since 2001. There were manifestations in the lungs, lymph nodes, and skeleton (straight arrow). The patient's biggest problem was swelling, aches, poor motor function, and sensation around the right scapula, in the shoulder, and arm. MRI of the BP with (a, b) T2-weighted DIXON TSE and (c, d) T2-weighted DIXON TSE with fat suppression showed an extensive tumor mass (straight arrow) originating from the thoracic wall and infiltration of the BP. Both the supra- and infraclavicular parts of the BP are swollen with increased signals (curved arrow). Vascular invasion is seen in the superior vena cava (straight dashed arrow).