Inconsistency Between Contrast-Enhanced CT and Bone Scintigraphy in Revealing Radiation Nephritis.

A 34-year-old woman with pancreatic acinar cell carcinoma underwent a Tc-MDP bone scan to rule out potential bone metastasis because of back pain 18 months after radiation therapy. The bone scintigraphy revealed increased uptake over the upper pole of both kidneys corresponding to the portions of the kidneys included within the radiation field, consisting with radiation nephritis.