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2015 ; 56
(12
): 791-5
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Influence of vascular endothelial growth factor inhibition on simple renal cysts
in patients receiving bevacizumab-based chemotherapy
#MMPMID26682018
Grenader T
; Shavit L
Korean J Urol
2015[Dec]; 56
(12
): 791-5
PMID26682018
show ga
PURPOSE: Although angiogenesis has been implicated in the promotion of renal cyst
growth in autosomal dominant polycystic kidney disease, no studies have
investigated the role of angiogenesis in the growth of simple renal cysts. The
aim of current study was to investigate the effect of chemotherapy with the
antivascular endothelial growth factor antibody bevacizumab on renal cyst
development and growth in cancer patients. MATERIALS AND METHODS: We
retrospectively reviewed the medical records of 136 patients with a variety of
cancers that were treated with bevacizumab-based chemotherapy for metastatic
disease. The presence of and changes in renal cysts were evaluated by
retrospective analysis of computed tomography scans performed for assessment of
tumor response to bevacizumab-based therapy. RESULTS: The median age of the
patients was 64 years. Renal cysts were identified in 66 patients, in whom 33
(50%) had a single cyst and the rest had 2 or more cysts. The average dose of
bevacizumab was 2.68 mg/kg per week. Median duration of treatment was 33 weeks.
Average cyst size was 1.9±2.4 cm at the beginning of the study and the majority
of the cysts (54 patients, 84%) did not change in size or shape during
bevacizumab treatment. No patients were identified with new cysts. Cyst size
changed in 10 patients (16%): an increase of 15% to 40% from the baseline size in
5 patients and a decrease in size of 10% to 70% in another 5 patients. The
duration of bevacizumab therapy was significantly longer in the subgroup of
patients with diminished or increased cyst size than in the patients with stable
cyst size: 62 weeks versus 29 weeks, respectively (p=0.0002). CONCLUSIONS: Our
data demonstrated that simple renal cysts were stable in size and number in the
vast majority of cancer patients treated with bevacizumab.
|Adult
[MESH]
|Aged
[MESH]
|Aged, 80 and over
[MESH]
|Angiogenesis Inhibitors/administration & dosage/*therapeutic use
[MESH]
|Bevacizumab/administration & dosage/*therapeutic use
[MESH]