Gross Anatomy Showing a Renal Calculus (Man'S Kidney)

Description

Sectioned renal anatomy is presented in an anterior cross section, exposing the renal cortex superficially and the renal medulla with distinct renal pyramids deep to it. Yellow renal calculi occupy the collecting system, clustered within the minor and major calyces and extending into the funnel of the renal pelvis, which narrows inferiorly to continue as the proximal ureter. Medial orientation is implied by the presence of the pelvis at the hilum, while the parenchyma (nephros) surrounds the calyceal spaces on all sides. Dense stone against delicate urothelium. Placement within the renal pelvis and calyces matters clinically because even a stone that forms within a collecting duct can migrate and obstruct the ureteropelvic junction, driving acute flank pain and hydronephrosis. This cutaway also clarifies why hematuria and infection risk rise with calyceal stones: sharp, irregular mineral surfaces abrade the calyceal mucosa and can impair urine drainage from an affected pyramid. For surgical and endourologic planning, the relationship of stone burden to the infundibula, pelvis, and ureter helps explain when extracorporeal shock wave lithotripsy is less effective and why ureteroscopy or percutaneous nephrolithotomy may be selected. Use this illustration in renal and urinary system modules for medical gross anatomy and pathophysiology, where students need to connect renal parenchyma, pyramids, and the collecting system to the presentation of nephrolithiasis. It also fits patient education handouts, urology clinic materials, and textbooks covering obstruction at the UPJ and early ureter, with a clear color contrast that reads well at small sizes. Anatomical accuracy verified by SciePro's Medical Advisory Board.