A ureteral tumor is a rare growth inside the thin tube that carries urine from kidney to bladder. Because the tube is narrow, even a small tumor acts like a cork, so symptoms start early and build fast. Painless blood is the hallmark. Urine turns pink, rust-brown, or contains small clots—often on and off, so many blame a simple infection. Flank pain creeps in. A dull, steady ache below the ribs can throb more as the bladder fills and ease right after you pee. Urgency and frequency climb. You dash every hour, yet only a small amount comes out each... Learn more