“…In addition to the histopathologic type of neoplasm, many additional factors, including the degree of inflammation, the presence of necrosis or dystrophic calcifications, angiogenesis, compartmental sequestration, and alterations of the tissue pH, can lead to the accumulation of the radiopharmaceutical [7]. Classically, primary osteosarcoma and its metastases show extraosseous uptake due to bone ma- [6], hypercalcemia a (myeloma, hyperparathyroidism) [6,8,34], gastric metastasis a [21] Liver Liver metastases a [3,4,7,8], aluminum and colloidal impurities, amyloidosis [6], fulminant hepatitis, prior sestamibi imaging Gallbladder Cholecystitis, chemotherapy-related gallbladder uptake a [53] Spleen Sickle cell disease [4,6], Hodgkin and non-Hodgkin lymphoma [6], thalassemia, amyloidosis [6], aluminum and colloidal impurities [7] Peritoneal space Malignant ascites [15], ascites with hepatic failure a [14] Mesentery, omentum, and retroperitoneum…”