Yogi has a histroy dating from June 2014 of recurrent UTI’s, low urine specific gravity and renal values that are trending up.  SpG is 1.010.  BUN has gone from 18 in 2014 to 42 this January.  Creat went from 0.9 to 1.5 in same time  frame.  This January, most recent free catch urine sample showed WBCs and rod bacteria that cultured positive for e-coli. No protein noted on this UA.  He was placed on a 2 week course of Clavamox.  Just finished and presented today to have a limited ultrasound of kidneys, prostate, urinary bladder and testicles.  

Yogi has a histroy dating from June 2014 of recurrent UTI’s, low urine specific gravity and renal values that are trending up.  SpG is 1.010.  BUN has gone from 18 in 2014 to 42 this January.  Creat went from 0.9 to 1.5 in same time  frame.  This January, most recent free catch urine sample showed WBCs and rod bacteria that cultured positive for e-coli. No protein noted on this UA.  He was placed on a 2 week course of Clavamox.  Just finished and presented today to have a limited ultrasound of kidneys, prostate, urinary bladder and testicles.  
Concerned about the hyperechoic appearance of the left kidney and the prostate + the cystic areas in the prostate.  For now, opting to get him neutered and will put him back on antibiotics based on a repeat urine cysto C&S today, but would love input regarding aspirating the cyst and what your thoughts are about the gradually increasing renal values and isosthenuric urine.