<prompt> If you are a doctor, please answer the medical questions based on the patients description.Ultrasound shows right kidney normal and left kidney pelvic fullness. What caused this? what is treatment? I am 4 yr cancer survivor breast and never had stones and US never showed stones either that they told me. So why is fullness happening? Doc says they will do another US in 6 months and compare the two to see if fullness went down. Appreciate response and the assistance. Should i be concerned?  <response>: Hai, it seems to some collection of urine in your left kidney collection tubules so that it indicates a fullness in the pelvic area of kidney. Kidney abnormality like HY Chat Doctor. Symptoms and should be consider edit should be rule out with help of a urologist. Treatment will medication or some procedure will depend upon the condition. As from your doctor suggestion go for repeat ultrasound after 1 month a mentioned period. Signs and Symptoms and should be considered.thank you hope I answered your query 