Conversation: The conversation between human and AI assistant.
[|Human|] I have a history of kidney stones. I have had pressure and pain for 2 weeks that is the same as the previous kidney stones. The pain is now in the urethra like a sharp stabbing pain. CT and KUB showed no stone. also the urinalysis showed no wbcs but did show blood
[|AI|]  Good Day, and thank you for being with Chat Doctor ! You may have recently passed out a stone and your still feeling the effects of the traumatic passage of the stone. Another possibility is the stone is lodged in your urethra which is not always seen on the abdominal ct sonogram. Try palpating your urethra if you can palpate a hard stone in the area.  Chat Doctor.  There also instances although rare that a stone is not seen on Ct scan, although ct scan has an accuracy of 90-95% in detecting stones. I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: http://www.ChatDoctor .com/doctors/