We compared the success rate of lower
calyceal stones with stones at other sites.
Tabbarah, "Preterm delivery in the setting of left
calyceal rupture," Case Reports in Obstetrics and Gynecology, vol.
The
calyceal diverticulum, which had been diagnosed preoperatively as a complicated cyst, was confirmed by ureteroscopy and retrograde pyelogram (Figure 2).
Caption: FIGURE 2: Coronal CT scan of the abdomen and pelvis with contrast revealed a 6 mm obstructing right proximal ureteral stone (not shown in image) causing mild hydronephrosis and a 2 cm left inferior pole staghorn calculus causing
calyceal dilatation (arrow).
The soft tissue infiltration obliterated both renal hila and caused proximal ureteral stenoses with mild
calyceal dilation on the left side (Figures 1 and 2).
In patients with upper
calyceal stones, access to the upper calyx was performed through the middle calyx.
The non-hydrolysable GTP analog GTP[gamma]S, when loaded into
calyceal terminals, blocks vesicle endocytosis (Fig.
Its presence in
calyceal system was confirmed by suctioning it through 10 cc disposable syringe.
Dilatation of the renal pelvis and
calyceal system can occur even in the absence of urinary obstruction; therefore, hydronephrosis and obstructive uropathy are not interchangeable or synonymous terms.
Findings of ultrasound or CT scanning in two groups showed one to three stones measured 3 mm to 11 mm in urinary tract system from calyces to bladder in which at least one stone has been localized between ureteropelvic and ureterovesical junction and exceptionally two patients with only one
calyceal stone in Group A.
The proposed mechanism is the rupture of the
calyceal fornix as a result of increased pressure and the collection of urine in the perinephric space.
Renal abnormalities, including renal hypoplasia, hydronephrosis and duplication of the
calyceal system, have been reported less frequently.
