Hi, Thanks for writing in. The kidneys have an outer cortex and inner medulla. This outer part is called parenchyma and in some kidney conditions, the parenchyma gets thin and this can mean you have a kidney condition. Since your age and history of any condition predisposing to kidney problems is not mentioned, therefore it is important to get your kidney function tests done in detail. This includes serum creatinine and complete urine analysis. Excretion of proteins in the urine is also to be evaluated. Any secondary kidney infection needs to be ruled out. It can mean that you are having early medical renal disease and there is some problem in the processes leading to formation of urine. Please talk to your nephrologist and start taking treatment at the earliest.