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 +0  (nbme22#14)

Why is it that the intercostal vein provides the most direct pathway for metastatic breast cancer cells to spread to vertebral column? I thought it was internal thoracic (mammary) and I couldn’t find much searching online, besides wikipedia saying that internal thoracic vein drains the breast.

gainsgutsglory  Intercostal vein → Azygos → Batson vertebral plexus → infection of inner vertebral body
realmedicmd  The internal thoracic drains into the subclavian, intercostal drains into the azygos system which is a more direct path to the vertebral drainage.

 +0  (nbme22#17)

Why is the answer fibularis brevis and not fibularis tertius? How do you distinguish between the two from this vignette?

gainsgutsglory  tertius is an anterior muscle and overlays the dorsum of foot as it fans out to the toes. Does not relate to the lateral malleolus.

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