What is the classic triad of symptoms for renal cell carcinoma?

• A. Flank pain, hematuria, and a palpable mass
• B. Weight loss, fever, and night sweats
• C. Dysuria, frequency, urgency
• D. Hypertension, edema, facial plethora

Answer: (A)

Renal cell carcinoma is classically linked to a triad that reflects tumor growth inside the kidney and its effects on the urinary tract and surrounding tissue. Flank pain arises as the tumor enlarges and stretches the renal capsule, creating a dull, persistent ache. Hematuria results from the tumor invading or eroding into the collecting system, causing blood to appear in the urine. A palpable abdominal mass is due to the enlarged kidney/tumor that can be felt on examination. While this triad is a classic teaching point, many patients are now diagnosed incidentally on imaging or present with other signs such as paraneoplastic phenomena (for example, increased erythropoietin causing polycythemia, or hypertension). The other options describe symptoms more typical of urinary tract infections, non-specific constitutional symptoms, or unrelated conditions, and do not capture the characteristic combination associated with the classic RCC presentation.