Focal pulmonary uptake on myocardial perfusion scintigraphy due to iatrogenic microembolism

Unusual Focal Lung Uptake without CT Abnormality on a Bone Scan: What Might It Mean?

“…None of these conditions was present in our patient. Furthermore, unusual lung focal uptake with no morphological abnormality on CT scan were described with several radiotracers such as 99m Tc-dimercaptosuccinic acid ( 99m Tc-DMSA) [7], 99m Tc-sestamibi [8,9], 68 Ga-DOTANOC [10], more recently 68 Ga-PSMA-11 [11] and above all 18 F-fluorodesoxiglucose ( 18 FDG) with which lung hot spots could be present in up to 1.5/1000 exams [12,13]. Despite the great number of bone scan practiced worldwide since decades, this pattern seems extremely rare with bone-seeking tracers, described once with 99m Tc-MDP [14].…”

“…None of these conditions was present in our patient. Furthermore, unusual lung focal uptake with no morphological abnormality on CT scan were described with several radiotracers such as 99m Tc-dimercaptosuccinic acid ( 99m Tc-DMSA)[7], 99m Tc-sestamibi[8,9], 68 Ga-DOTANOC[10], more…”