Lithiasis: stone and brick layer forms

Urinary stones form from different forms
Urinary stones are not only different in their composition. They are also different forms. Besides the frequently occurring round stones, there are also stones that mulberries or deer antlers resemble. As from cast stone ​​stone shapes are called, which adapt to the renal pelvis, "pour" it so to speak. A distinction is whether they shape only a portion of the renal pelvis, which are then filled from cast stone ​​partial, or total renal pelvis. Which are then called total from cast stone.


In the X-ray can not see any stones from the same
A further distinction is important for the physician in diagnosis. The radiographs are certain types of stone are positive, others negative. Also, the rock formation of sterile or infected urine may be accompanied. In infected urine is also called an infection stone.


The pain is evidence of the situation
The location of the stone within the urinary tract is of critical importance. Often is even noticeable on the basis of pain, where there is a stone. Characteristic that "stuck" to the blocks often narrows the urethra is physiological.


The growth of stones often starts in the calyces.
Normally, the growth of urinary stones in the calyces begins. How mobile is a stone depends on its size and the individual characteristics of the affected kidney. Generally, a stone walk through the entire urinary tract. An exception is the medullary sponge kidney. In this disease the header tubes with pea-sized, cystic extensions are provided. This leads to the formation of only a few millimeters large stones, which then dissolve and move freely in the calyces of the kidney.

 Other typical locations for the detection of urinary stones are:

    Kidney stones: they are often located in the calyces or the renal calyx neck, as a partial or total Ausgussstein in the renal pelvis or renal pelvic stones.
    Ureter: ureteral stones are often found on the physiological scarring of the ureter:
        Transition of the renal pelvis into the ureter
        Crossing of the mighty iliac artery (iliac artery or external) to the point where it enters the area of ​​the bony pelvis
        Mouth of the ureter into the bladder or uretro-vesical junction
    Bladder stones
    Urethral stones

In many cases, stones are easily excreted through the urethra. However, this is not the case when patients have, in bladder emptying disorders. A narrowing of the urethra can cause the stones lodged in the urethra. Longer remains a stone in a supersaturated environment with urine, it often grows so much that he can not be excreted naturally.