All issues > Volume 31(6); 1988

Original Article

J Korean Pediatr Soc. 1988;31(6):715-722. Published online June 30, 1988.

Diagnostic Value of Perfusion Lung Scan on Airway Foreign Body in Children.

Ki Young Lee¹, Kyu Earn Kim¹

¹Department of Pediatrics, College of Medicine, Yonsei University, Seoul, Korea

Received: December 2, 1987;  Accepted: January 21, 1988.

Abstract

The authors evaluated diagnostic value of perfusion scan of the lung in the children who had foreign bodies. Perfusion lung scan with 99mTc MAA was performed in 23 cases of children with foreign bodies in the airway. The results of study were as follows; 1) The majority of 23 cases with foreign body in airway was infants and young children, and 19 cases (82.6%) of them was under 2 years of age. The most common foreign body was peanuts (69.6%). The predirection site of foreign body was more common in left bronchus than right. 2) 17 of 23 cases with foreign body in airway showed perfusion defect in scan, but 6 cases had normal findings. 3) A large percentage (76.5%) of 17 cases with perfusion defect in scan showed marked defect or total absence of perfusion. 4) The extent of perfusion defect was closely related with the duration from foreign body aspira- tion to removal. Therefore, the perfusion defect seemed to begin at 4th day after foreign body aspiration, and 10 of 12 cases showed perfusion defect in scan at 4th 〜 7th day. All cases (6 cases) over 7 days showed perfusion defect and its extent was remarkable. So, the authors think that the perfusion lung scan can be helpful in diagnosis of airway foreign body, particularly in cases of long standing foreign body.

Keywords :Foreign bodies, Perfusion lung scan