Renal imaging in 99m-Tc-polyphosphate bone scanning: focal increased renal uptake in metastic carcinoma of lung.

A small group of patients with normal intravenous urograms showed focal increased renal uptake, usually unilateral, of 99m-Tc-polyphosphate. All had documented metastatic squamous cell carcinoma of the lung. The combination of focal increased renal 99m-Tc-polyphosphate uptake with normal intravenous urogram occurred in no other patients.