Megacalycosis
Fundamentals and Symptoms of Megacalycosis
Definition:
Megakalikosis is the enlargement of the calyceal system without urinary tract obstruction or vesicoureteral reflux, which is caused by a malformation of the renal papillae.
Epidemiology:
male:female = 6:1
Etiology of Megacalycosis:
Megacalycosis caused by a malformation of the renal medulla with short collecting ducts, the number of calyces is increased.
Pathophysiology of Megacalycosis:
Megacalycosis causes a mild disturbance of the maximum concentration capacity of the kidney.
Signs and Symptoms:
In general, no complaints.
Diagnostic Work-Up of Megacalycosis
Intravenous Urography:
Intravenous urography shows a enlargement of the pyelocalyceal system and an increased number of calyces. Dilatation of the renal pelvis ist not present, the ureter is slim [fig. megacalycosis in intravenous urography].
VCUG:
Vesicoureteral reflux is not present in voiding cysturethrography.
Renal Scintigraphy:
Normal renal function, prompt washout of the radionuclide.
 |
nbsp; | Megacalycosis: intravenous urography shows an enlargement of the pyelocalyceal system and an increased number of calyces. By courtesy, Dr. G. Antes, Kempten. |
Treatment of Megacalycosis
Specific treatment is not necessary.
| Caliceal Diverticulum | Index | Extrarenal calyces |
Index: 1–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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Deutsche Version: Megakalikose
Last update
Dr. med. Dirk Manski
man...@urologielehrbuch.de