Fixations extra-osseuses thoraciques en scintigraphie du squelette

Accumulation of bone seeking radiopharmaceuticals in soft tissue of the chest has many causes. We report two cases of 99m-Tc-HMDP uptake respectively in the lung, in a patient with localized amyloidosis, and on diaphragmatic metastasis of a PNET. Mechanisms of such uptake are discussed.