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Fundamentals and Symptoms of Megacalycosis
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.
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 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].
Vesicoureteral reflux is not present in voiding cysturethrography.
Normal renal function, prompt washout of the radionuclide.
Megacalycosis: intravenous urography shows an enlargement of the pyelocalyceal system and an increased number of calyces. With kind permission of Dr. G. Antes, Kempten.
Treatment of Megacalycosis
Specific treatment is not necessary.
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Deutsche Version: Megakalikose