<s>[INST] Hi, I am extremely worried. I had an episode of gross hematuria. I am 48 yrs. old. 120 lbs. blood pressure 115/81. I went to give a urine sample to the doctor the next day. It came back blood-large but no sign of infection. Doc said don t worry, it could be stones. It s been 10 days and I do not have pain and I don t believe I ve passed a stone or I would know it. She scheduled a CT scan and cystoscope but it s not for 3 more weeks. I m soooo worried. I am a smoker also. I read that kidney cancer that presents with gross hematuria is only in 10% of cases but when it does, the cancer is already advanced. The blood is the only symptom I have. If this where advanced cancer wouldn t I have the other symptoms too? I have had some minor abdominal pain and flank pain but it goes away. Is there anything else it could be besides cancer if it s not stones or infection? Also, I have had frequent urination for about 8 years. I always thought it s because I drink a lot of Dr. Pepper. My PSA was low a few months ago. [/INST] HIWell come to HCMI really appreciate your concern, certain condition are there for the hematuria and all that need to be ruled out first then comes the question of malignancy and if this is the malignancy then it could have been detected at very first clinical examination and investigation, so malignancy might have been ruled out,  hope this information helps, take care and have a nice day. </s>