Renal milk of calcium: contraindication to extracorporeal shockwave lithotripsy.
Renal milk-of-calcium (MOC) cysts are rare findings, with only approximately 60 cases reported in the literature. The diagnosis depends on the demonstration of the typical "half-moon" configuration on horizontal beam radiography; classical ultrasound finding is a gravity-dependent, echogenic shadowy material in a renal cyst. The importance of the MOC syndrome lies in its recognition and differentiation from a renal stone in order to avoid unwarranted surgery or extracorporeal shock-wave lithotripsy (ESWL). We have encountered five patients with renal MOC and present the typical clinical and radiological features in order to facilitate differential diagnosis.
Heidenreich
A
A
Department of Urology, University of Cologne, Germany.
Vorreuther
R
R
Krug
B
B
Moul
J W
JW
Engelmann
U H
UH
D000328:Adult; D000368:Aged; D000792:Angiography; D002130:Calcium Phosphates / Q000032:analysis; D000075202:Contraindications; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007669:Kidney Calculi / Q000737:chemistry / Q000175:diagnosis* / Q000628:therapy; D007670:Kidney Calices / Q000000981:diagnostic imaging; D052177:Kidney Diseases, Cystic / Q000175:diagnosis* / Q000628:therapy; D008096:Lithotripsy; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography; D014567:Urography
D002130:Calcium Phosphates; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; C485838:calcium phosphate, monobasic, anhydrous; C020243:calcium phosphate; C485829:calcium phosphate, dibasic, anhydrous