RADIOIODINE UPTAKE BY SQUAMOUS-CELL CARCINOMA OF THE LUNG

A patient with a history of total thyroidectomy for papillary carcinom a showed a solitary hot spot in the chest on post-therapy radioiodine imaging. Subsequent evaluation demonstrated that this lesion was a pri mary squamous-cell lung cancer. Our case illustrates a rare but import ant differential diagnosis from lung metastatsis of thyroid cancer in I-131 scintigraphy. Alternatively, this ''aberrant uptake'' might be a rather common phenomenon for lung neoplasms, although the underlying mechanism is not yet known. Future experimental studies might lead to a new application of radioiodine imaging in pulmonary oncology.