STONE OR STAGHORN CALCULUS
Large stones may or may not present with flank pain. These stone
may be struvite or infectious stones, and may present with infection.
Based on the location of this stone, an IVP (a), unenhanced helical
CT Scan (b) or renal ultrasound will likely demonstrate this stone.
calculus. Plain abdominal film (a) demonstrating a large radiopaque
renal stone in the right kidney (yellow arrowhead). Unenchanced
CT scan (b) from a different patient shows the staghorn calculus
The stones are relatively large and may even be larger (i.e., staghorn
calculus). Although ESWL can be performed, this usually requires
multiple procedures to make the patient stone free. PCNL, although
minimally invasive, can often render the patient stone free after
a single procedure.