Chest wall metastasis after percutaneous fine-needle aspiration biopsy.

Presented is a case of a chest wall metastasis due to tumor seeding along the needle tract from a percutaneous fine-needle aspiration biopsy (FNAB) of a lung carcinoma. At thoracostomy, the patient was found to have a chest wall lesion at the site of the FNAB that had been performed 4 months earlier. This relatively uncommon complication has been reported elsewhere, but its significance with respect to the management of lung lesions suspected to be malignant has not been defined.