Hi, Thanks for writing in. When CT scan of abdomen (kidneys included) is done, the scan also is taken for the lower areas of chest and the lung bases. I think pneumonia was diagnosed in this manner. Coming to the kidney growth, fat deposition can occur in some tumors of kidneys like lipoma or angiomyolipoma. The nature of such growth needs to be accurately evaluated and your doctor will write this in your report. In most patients, fat deposition in kidneys is a benign condition, however the confirmation depends on correct description and may also require a kidney biopsy. Hope this helps.