Final answer:
Pyeloplasty is the term for suturing or stitching of the renal pelvis, typically performed to repair an obstruction at the junction where the renal pelvis meets the ureter.
Step-by-step explanation:
The term for suturing or stitching of the renal pelvis is known as pyeloplasty. This medical procedure is aimed at repairing a blockage or narrowing (known as ureteropelvic junction obstruction) where the renal pelvis transitions into the ureter. The renal pelvis is a funnel-like end of the ureter within the hilum region of the kidney, where urine collects before it is transported to the bladder through the ureters. During pyeloplasty, the surgeon makes an incision to access the area, removes the obstruction, and then sutures the renal pelvis to ensure proper urine flow. This surgical intervention helps prevent complications like urinary tract infections (UTIs) and maintains kidney function.