I-123 Uptake in the Chest Wall After Needle Biopsy of a Pulmonary Nodule: A Cause for False—Positive I-123 Uptake

McDougall listed 42 cases of physiologic and pathologic causes of abnormal distribution of radioiodine that can be misinterpreted for metastatic cancer in whole-body I-131 scans. The authors previously presented infected sebaceous cyst in the scalp as a cause of false-positive I-123 uptake. The authors use I-123 for routine thyroid scanning and for total-body search for metastatic thyroid cancer. The authors report one more false-positive result caused by oozing in the chest wall from the biopsy site for a pulmonary nodule.