Document Detail

Lung scintigraphy in postpneumonectomy dyspnea due to a right-to-left shunt.
MedLine Citation:
PMID:  9374362     Owner:  NLM     Status:  MEDLINE    
We report the case of a 50-yr-old man who experienced exertional dyspnea 5 mo after a left pneumonectomy for carcinoma. As the clinical features pointed toward a pulmonary embolism, we performed a ventilation plus perfusion radionuclide lung scan. It showed no evidence of pulmonary embolism, but it did show a systemic uptake of the isotope, suggesting a right-to-left shunt that was confirmed by contrast echocardiography, which revealed an atrial septal defect. Right-to-left shunts after pneumonectomy have already been reported and can be diagnosed by lung scintigraphy. Usually, a patent foramen ovale is encountered, but the underlying physiopathology remains under discussion. Clinically, right-to-left shunts are often related to platypnea-orthodeoxia.
E Durand; E Bussy; J F Gaillard
Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Journal of nuclear medicine : official publication, Society of Nuclear Medicine     Volume:  38     ISSN:  0161-5505     ISO Abbreviation:  J. Nucl. Med.     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1997-12-11     Completed Date:  1997-12-11     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0217410     Medline TA:  J Nucl Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1812-5     Citation Subset:  IM    
Service de Médecine Nucléaire, Hôpital d'Instruction des Armées du Val de Grâce, Paris, France.
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MeSH Terms
Diagnosis, Differential
Dyspnea / etiology
Heart Septal Defects, Atrial / complications,  radionuclide imaging*,  ultrasonography
Lung / radionuclide imaging*
Lung Neoplasms / surgery
Middle Aged
Postoperative Complications / radionuclide imaging*
Pulmonary Embolism / radionuclide imaging
Technetium Tc 99m Aggregated Albumin / diagnostic use
Ventilation-Perfusion Ratio
Reg. No./Substance:
0/Technetium Tc 99m Aggregated Albumin

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