Table 1.

Comparison of diagnosis approaches for urinary bladder tumors

Diagnosis approaches	Manifestation	Advantages	Disadvantages
USG	Submucosal homogeneous mass, having clear outline, continuous mucosa, and abundant blood	Most commonly used and noninvasive	USG is commonly used, but it may miss urothelial tumors of the upper tract and small stones or tumors
KUB+IVU	Abnormal density; filling defect	Simple and intuitive	Unclear boundaries; get less information
CT	A heterogeneous increase in density after injection of iodine-containing contrast solution	Being sensitive for calcification or lithangiuria	Invasive, Radiation injure, soft tissue resolution is not high enough for diagnosis
MRI	The relationship between the mass and the bladder mucosa, muscular and peri-tissue	High-resolution and multiplanar capability	Time and cost consuming and not convenient
Cystoscopyt	Delineate the exact location of the lesion, especially with regard to the depth of invasion and the involvement of the ureters	more important in locating and qualitative diagnosis	Invasive, cost consuming and not convenien

Notes: USG, Ultrasonographic examination; IVU, Intravenous Pyelograph; MRI, magnetic resonance imaging.