Fig. 18

Axial T1 and PDFS of a 70-year-old male with non-small cell lung cancer. There is a lytic destructive lesion in the mid-humeral shaft with cortical disruption and extraosseous extension (white arrow) extending into the deltoid attachment and the coracobrachialis muscle. While the musculocutaneous nerve is not confidently traced due to the motion artefact, it is expected to be in close contact with the lesion. Oedema signal within coracobrachialis muscle (yellow circle) can be either due to direct muscle involvement or denervation