Lung Perfusion imaging in Tetralogy of Fallot: a case report.

Congenital heart disease, such as Tetralogy of Fallot (TOF) are the most common human birth defects that may be a cause of pulmonary diseases.
Lung scintigraphy perfusion (LPS) has an important role in evaluation of lung burden in patient with these defects, to complete the work-up for a better management and in follow-up to assess the best therapeutic strategy.
We report the case of a 10-year-old female patient with TOF, submitted to cardiac surgery, who performed LPS. It showed hypo-perfusion of the left respect to the right lung and abnormal uptake of 99mTc-Macroaggregated Albumin in kidneys and spleen, revealing the presence of right-to-left shunt, and the necessity of further cardiac surgery.
This case is a demonstrative example of LPS usefulness in patients with TOF, allowing an accurate evaluation of the best therapeutic strategy with the benefits of low radiation exposure, side effects lack, repeatability, easy management and good compliance.