CTICasesBronchial Migration of a Tumor Fiducial Marker
Imaging findings
Sequential CT images during a percutaneous needle biopsy of a lung adenocarcinoma demonstrate placement of a gold fiducial marker adjacent to the lesion. A post-placement scan following a patient cough shows that the marker has migrated out of the tumor and into the mainstem bronchus.
Key takeaways
Fiducial markers placed percutaneously for stereotactic body radiotherapy targeting can occasionally migrate or embolize. While migration into the pleural space or hematogenous embolization to the systemic/pulmonary vasculature can occur, expectoration or airway migration into the mainstem bronchus is another potential complication, particularly triggered by patient coughing during or immediately after the procedure.
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