“…12 Superscan Due to Metastatic Disease Superscans due to widespread osseous metastases occur most frequently in the context of breast 17,37 and prostate cancer 11,19,38,39 but may also be seen in lung, 11 genitourinary tract, 40 gastrointestinal (GI) tract, 41,42 head and neck, 43 and occasionally hematological malignancies. 16,18,[44][45][46][47] Not surprisingly, metastatic superscans are indicators of poor prognosis. [48][49][50][51] The appearance of a metastatic superscan is characterized by abnormally increased skeletal uptake in a distribution similar to that of the bone marrow, that is, the axial and proximal appendicular skeleton to a greater degree than the appendicular skeleton.…”