The color of our urine is a health indicator that reflects the processes taking place in the body. A change in color can be due to completely harmless reasons, such as dehydration or the consumption of certain foods. But in some cases, an unusual urine color can be the first and only sign of serious diseases, such as cancer. In this article, we will examine three key urine colors that can indicate oncological diseases of the urinary system, and explain why it is essential to consult a doctor immediately when they appear.
I am a urologist-oncologist, Doctor of Medical Sciences, with 20 years of experience. Every day, I encounter patients who have sought care too late, ignoring these warning signs. The text you are about to read is a detailed guide based on clinical experience and current medical data.
Color #1: Red or pink – blood in the urine (hematuria)
Hematuria is the presence of blood in the urine. It is the most alarming and obvious symptom, and should not be underestimated. The red or pink color may be due to a small amount of blood or a larger amount of bleeding.
Why it’s worrisome: Blood in the urine can be caused by inflammation (cystitis, pyelonephritis), trauma, or kidney stones. But the most dangerous cause is bladder or kidney cancer. The developing tumor damages blood vessels, causing bleeding.
Characteristics of oncological hematuria:
Painless. Unlike hematuria caused by stones or infections (often accompanied by pain, burning, or discomfort), cancerous hematuria is usually painless, making it an extremely insidious symptom.
Intermittent. Bleeding may appear and disappear, creating a false impression of improvement. The patient thinks it’s over and does not seek medical help as the tumor continues to grow.
