What's your diagnosis, based on this finding in urine microscopy? I'll post the correct answer in about three days!
Correct answer: These are leukocytes. If more than 10 leukocytes are seen in one square millimeter, there's an abnormal amount of leukocytes in the urine sample. The most common cause for this finding is urinary tract infections. Sterile pyuria (meaning the presence leukocytes in the urine, but without bacteria) is seen in e.g. bladder tumors and after treatment for renal calculi or a urinary tract infection.