CTICasesFlipped Venous Access Port
Imaging findings
Initial spot image shows a right IJ port with the letters 'C T' readable. Follow-up radiograph shows the letter 'C' is reversed, indicating that the port has flipped 180 degrees along its vertical axis, placing the metal backing anteriorly.
Key takeaways
Port inversion (flipped port) prevents venous access because the needle cannot penetrate the hard metal/plastic backing. It is diagnosed on radiographs by identifying flipped orientation markings (e.g., backward 'C' and 'T').
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