PSEUDOSTRIPE SIGN IN LOBAR COLLAPSE

The stripe sign in perfusion lung scanning refers to an area of focal hypoperfusion that fails to extend to the pleural surface, leaving a p eripheral rim of perfused parenchyma, Although experimental evidence s uggests that the stripe sign is caused by central pulmonary emphysema, we report a case of an identical perfusion defect related to a comple tely collapsed left lower lobe. This etiology should be considered in the differential diagnosis of the stripe sign.