Ultrasound shows air around kidney and swollen kidney on 7 year old could this be cancer?

Air around. the kidney? Do you mean air in bowel loops next to the kidney? Air that is actually in or around the kidney would be a sign of a severe type of infection. Was this in the US report or were you seeing something yourself on the screen?
Ask the doctor.... What reported may suggest some inflammatory changes in or around kidneys, but should correlate such with personal clinical profile, that is, a detailed general & specific history + the finding of physical exam, etc. So, follow instruction in articles listed in http://www.formefirst.com/onDealSickness.html so to work well with the attending doctor for right diagnosis & care. Best wish to health...

Related Questions

Ultrasound shows air around kidney and swollen kidney on 7 year old could this be cancer?

Many possibilities? There are many diseases in children that can exhibit the type of ultrasound result you describe. These include: acute and chronic renal failure, hydronephrosis, urinary tract infection, kidney infection, hemolytic uremic syndrome, and post strep glomerulonephritis. You need to discuss the results of the imaging with your doctor. Read more...