[۹۹mTc]Tc-DMSA uptake in the thoracic region mimicking ectopic kidney in a case of crossed fused renal ectopia

We present the findings of a [۹۹mTc]Tc-DMSA scan conducted on a ۶-month-old girl who was experiencing fever and recurrent urinary tract infections. The scan revealed crossed fused kidneys on the right side with no radiotracer uptake in the left renal site. Additionally, the scan showed an incidental finding of radiotracer uptake in the left hemithorax, which was initially suspected to be an ectopic thoracic kidney. However, fused SPECT/CT images clarified that this uptake was a lung clot embolus. This case underscores the importance of considering the possibility of radioactive lung clot when encountering incidental intrathoracic uptake especially following traumatic catheterization. Doing so can enhance patient comfort by reducing the need for further diagnostic procedures while minimizing unnecessary radiation exposure.

کلیدواژه ها:

[۹۹mTc]Tc-DMSA ، SPECT/CT ، Extrarenal DMSA uptake ، Crossed fused kidneys ، Iatrogenic lung emboli