'Stipple sign’ in transitional cell carcinoma of the renal collecting system is best demonstrated by: (A) Intravenous urography, (B) Retrograde pyeloureterography, (C) Radionuclide scan, (D) Ultrasound scan
Answer is A. An intravenous pyelogram, also called an intravenous urogram, is a radiological procedure used to visualize abnormalities of the urinary system, including the kidneys, ureters, and bladder.