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2015 ; 7
(ä): 153-5
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Radiological findings and the clinical importance of megacalycosis
#MMPMID26528455
Kalaitzis C
; Patris E
; Deligeorgiou E
; Sountoulides P
; Bantis A
; Giannakopoulos S
; Touloupidis S
Res Rep Urol
2015[]; 7
(ä): 153-5
PMID26528455
show ga
OBJECTIVE: To describe the radiological findings and the clinical importance of
megacalycosis. MATERIALS AND METHODS: On the basis of a case report and
literature review, diagnostic criteria and clinical significance of megacalycosis
are presented. RESULT: Megacalycosis is mostly asymptomatic and is usually
discovered either accidentally or as a result of its complications, such as stone
formation, flank pain, hematuria, infection, and fever. The renal pelvis,
infundibulum, and ureter are not dilated. Calyces have a semilunar configuration
rather than the conventional triangular or conical form. The tip of each pyramid
is flat, and the calyces possess neither fornix nor papillae impressions. The
number of calyces is increased compared to the healthy condition, typically from
20-25. The renal parenchyma has a normal width but with a slight narrowing of the
renal medulla. The kidney exhibits normal function, in particular with respect to
its ability to concentrate the urine. CONCLUSION: Megacalycosis is a rare,
usually unilateral dilatation of the kidney calyces in the presence of a normal,
undilated renal pelvis and ureter. Its pathological significance lies in the
occurrence of complications.