International journal of clinical oncology · 2015
Characterization of mild and severe post-radical nephrectomy renal functional deterioration utilizing histopathological evaluation of non-neoplastic nephrectomized renal parenchyma.
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Sejima Takehiro, Yumioka Tetsuya, Yamaguchi Noriya, Iwamoto Hideto, Masago Toshihiko, Morizane Shuichi, Honda Masashi, Takenaka Atsushi
Аннотация
BACKGROUND: We investigated factors affecting mild (MRFD) and severe renal functional deterioration (SRFD) after radical nephrectomy with a special focus on the histopathology of nephrectomized non-neoplastic renal parenchyma.
METHODS: MRFD was defined as a postoperative decline of percent estimated glomerular filtration rate (eGFR) lower than the value of the mean minus standard deviation (SD). SRFD was defined as a rate greater than the value of the mean plus SD. The histopathological factors of global glomerulosclerosis (GS) and arteriosclerosis in non-neoplastic renal parenchyma and multiple clinical factors were analyzed to determine whether they affected postoperative renal functional deterioration in 100 renal cell carcinoma cases. The prognoses, including non-cancer mortality, were collected from long-term follow-up data.
RESULTS: A higher preoperative eGFR and a higher global GS extent in non-neoplastic renal parenchyma were independently associated with MRFD and SRFD, respectively. The cardiovascular disease-specific survival rates of the SRFD group and the group with global GS extent >14 % were significantly worse than those of their counterparts.
CONCLUSIONS: This is the first report to identify global GS extent in nephrectomized non-neoplastic renal parenchyma as a factor affecting the development of life-threatening post-nephrectomy renal functional deterioration. Moreover, we are the first to advocate the importance of the characterization of favorable post-nephrectomy renal functional deterioration. The identification of MRFD and SRFD by histopathological evaluation of nephrectomized non-neoplastic renal parenchyma will contribute to personalized postoperative follow-up. It may improve follow-up of individual patients with SRFD by permitting collaboration with other clinical departments such as cardiology.
METHODS: MRFD was defined as a postoperative decline of percent estimated glomerular filtration rate (eGFR) lower than the value of the mean minus standard deviation (SD). SRFD was defined as a rate greater than the value of the mean plus SD. The histopathological factors of global glomerulosclerosis (GS) and arteriosclerosis in non-neoplastic renal parenchyma and multiple clinical factors were analyzed to determine whether they affected postoperative renal functional deterioration in 100 renal cell carcinoma cases. The prognoses, including non-cancer mortality, were collected from long-term follow-up data.
RESULTS: A higher preoperative eGFR and a higher global GS extent in non-neoplastic renal parenchyma were independently associated with MRFD and SRFD, respectively. The cardiovascular disease-specific survival rates of the SRFD group and the group with global GS extent >14 % were significantly worse than those of their counterparts.
CONCLUSIONS: This is the first report to identify global GS extent in nephrectomized non-neoplastic renal parenchyma as a factor affecting the development of life-threatening post-nephrectomy renal functional deterioration. Moreover, we are the first to advocate the importance of the characterization of favorable post-nephrectomy renal functional deterioration. The identification of MRFD and SRFD by histopathological evaluation of nephrectomized non-neoplastic renal parenchyma will contribute to personalized postoperative follow-up. It may improve follow-up of individual patients with SRFD by permitting collaboration with other clinical departments such as cardiology.