A "Honda sign or variation" with evidence of fractures elsewhere or no evidence of other metastatic disease should be strong evidence for a sacral insufficiency fracture. The likelihood of having a solitary metastasis to the sacrum is small.

Inappropriate puncture of the internal mammary artery caused by subclavian vein puncture is a rare but potentially lethal complication. We report a case of 45-year-old woman with internal mammary artery injury following subclavian vein catheterization successfully treated by transcatheter arterial embolization using coils.

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