1
|
Van Horn CM, Iovanel G, Atwater B, Engelberg R, Sobieh A, Sorokin I. Perinephric fat stranding is associated with increased age and stone size but not with serum creatinine in patients with obstructing ureterolithiasis. Urolithiasis 2024; 52:87. [PMID: 38869700 DOI: 10.1007/s00240-024-01583-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 05/21/2024] [Indexed: 06/14/2024]
Abstract
Previous reports show increased severity of perinephric fat stranding (PFS) with elevated serum creatinine in obstructing ureterolithiasis. We sought to investigate this association with our institution's patient population.We reviewed charts of patients diagnosed with obstructive ureterolithiasis or nephrolithiasis in our emergency department between January and October 2018. Patient demographics, lab results, and computed tomography (CT) imaging were reviewed. A blinded radiologist reviewed all CTs and graded hydronephrosis and PFS. Subjects were stratified by degree of PFS and compared via paired t-test, chi-squared test, univariate analysis, and multivariate analysis.We identified 141 patients; 114 had no-mild (Group 1) PFS, while 27 had moderate-severe (Group 2) PFS. Group 1 had a mean age of 56 (SD = 16.1) and mean stone size of 7.3 mm (SD = 4.22); 77% of the cohort had symptoms under 24 h. Group 2 was older with a mean age of 65 (SD = 16.2, p = 0.01) and mean stone size of 10.1 mm (SD = 6.07, p < 0.01); 50% had symptoms less than 24 h (p = 0.01). PFS did not correlate with change in serum creatinine. Univariate and multivariate analysis showed increasing age increased the odds of moderate-severe PFS by 3.5% (OR = 1.035, p < 0.05) while increased stone size increased the odds of moderate-severe PFS by 13.7% (OR = 1.137, p = 0.01).Although increased PFS correlated with increased age and stone size, no correlation was found with presenting creatinine or change in creatinine. Degree of PFS is likely a poor predictor of renal disease severity in acute ureterolithiasis.
Collapse
Affiliation(s)
- Christine M Van Horn
- UMass Chan Medical School, Worcester, MA, USA.
- Department of Urology, Loyola University Chicago Stritch School of Medicine, Maywood, IL, USA.
| | | | - Britney Atwater
- UMass Chan Medical School, Worcester, MA, USA
- Department of Urology, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Rachel Engelberg
- UMass Chan Medical School, Worcester, MA, USA
- St. Vincent Medical Center, Worcester, MA, USA
| | - Ahmed Sobieh
- Department of Radiology, UMass Memorial Medical Center, Worcester, MA, USA
- University of Kentucky HealthCare, Lexington, KY, USA
| | - Igor Sorokin
- UMass Chan Medical School, Worcester, MA, USA
- Department of Urology, UMass Memorial Medical Center, Worcester, MA, USA
| |
Collapse
|
2
|
Kuo YR, Lee YC, Wang CT, Liu WC, Ou CH, Lin KC, Cheng TH, Jan HC, Hu CY. Prognostic value of preoperative radiographic perinephric fat features in renal cell carcinoma patients undergoing surgery. Asian J Surg 2024; 47:2188-2194. [PMID: 38383186 DOI: 10.1016/j.asjsur.2024.02.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/23/2024] [Accepted: 02/02/2024] [Indexed: 02/23/2024] Open
Abstract
BACKGROUND We aimed to assess the prognostic importance of perinephric fat features in images of patients with non-metastatic renal cell carcinoma (RCC) undergoing surgery. METHODS We enrolled RCC patients who underwent surgical treatment between 2011 and 2019. Two characteristics, including perinephric fat thickness and perinephric fat stranding, were evaluated using preoperative computed tomography or magnetic resonance images. The association between perinephric fat characteristics and disease progression was examined by Kaplan-Meier survival analysis and Cox regression model. RESULTS In a multivariate Cox proportional hazards model adjusting for tumor stage, intratumoral necrosis, and neutrophil-to-lymphocyte ratio, we found that patients in the thin perinephric fat group (<1 cm) had a poorer progression-free survival (PFS) compared to the thick perinephric fat group (≥1 cm) (HR 2.8; 95% CI 1.175-6.674, p = 0.02). Additionally, the fat stranding group had a poorer PFS than the non-stranding group (HR 3.852; 95% CI 1.082-13.704, p = 0.037). The non-stranding with thick perinephric fat group exhibits the highest cumulative PFS while the stranding with thin perinephric fat group has the lowest cumulative PFS. In receiver operating characteristic curve analysis, combing these two perinephric fat characteristics with tumor stage can achieve a better discriminatory power than tumor stage alone. CONCLUSIONS Our study indicates that the evaluation of image-based perinephric fat features is a simple, straightforward, reproducible tool for predicting RCC prognosis and may assist in preoperative risk stratification.
Collapse
Affiliation(s)
- Yuh-Ren Kuo
- Department of Urology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC
| | - Ya-Che Lee
- Department of Urology, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, 600, Taiwan, ROC
| | - Chung-Teng Wang
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC
| | - Wan-Chen Liu
- Department of Medical Imaging, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC
| | - Chien-Hui Ou
- Department of Urology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC; Department of Urology, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC
| | - Kun-Che Lin
- Department of Urology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC
| | - Tsung-Han Cheng
- Department of Urology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC
| | - Hau-Chern Jan
- Department of Urology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC; Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC.
| | - Che-Yuan Hu
- Department of Urology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC; Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan, ROC.
| |
Collapse
|
3
|
Kazan HO, Cicek M, Caskurlu H, Atis RG, Yildirim A. Early versus delayed ureterolithotripsy following obstructive acute pyelonephritis treatment. Urologia 2024; 91:147-153. [PMID: 38009295 DOI: 10.1177/03915603231210604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
BACKGROUND AND OBJECTIVES There is no recommendation on the timing of ureterolithotripsy after the treatment of obstructive acute pyelonephritis (APN). The effect of early and delayed ureterolithotripsy on postoperative urinary tract infection (UTI) and other complications was investigated. METHODS Patients who underwent ureterolithotripsy after obstructive APN treatment between February 2017 and August 2021 were divided into two groups, those operated during hospitalization and those operated within 3 months after discharge. Two groups were compared in terms of stone-free status, postoperative complications, postoperative UTI, and urosepsis rates. RESULTS Of the 91 patients included in the study, 68 were in the early ureterolithotripsy group, while 23 patients were in the delayed ureterolithotripsy group. The postoperative UTI rate was significantly higher in patients who underwent early ureterolithotripsy (29.4% vs 8.7%, p = 0.045). Patients with postoperative UTI had a higher moderate/severe perinephric fat stranding (PFS) on non-contrast CT at hospital admission (52.2% vs 29.4%, p = 0.048). Among the laboratory parameters, white blood cells were significantly higher in the group with postoperative UTI (21604.5 vs 14728.9, p = 0.042). In the multivariate analysis, early ureterolithotripsy and moderate/severe PFS were independent predictors for postoperative UTI. In the created model, the probability of postoperative UTI after ureterolitripsy after obstructive APN treatment was 3.5% in patients without risk factors, while this rate was 51.9% in patients with both risk factors. CONCLUSION There is no consensus on the timing of stone removal after treatment of obstructive APN. Early ureterolithoripsy and moderate/severe perinephric fat stranding on non-contrast CT are risk factors for postoperative UTI.
Collapse
Affiliation(s)
- Huseyin Ozgur Kazan
- Department of Urology, Istanbul Medeniyet University Goztepe Prof. Dr. Suleyman Yalcin City Hospital, Istanbul, Türkiye
| | - Muhammet Cicek
- Department of Urology, Van Training and Research Hospital, Van, Türkiye
| | - Hulya Caskurlu
- Department of Infectious Diseases and Clinical Microbiology, Istanbul Medeniyet University Goztepe Prof. Dr. Suleyman Yalcin City Hospital, Istanbul, Türkiye
| | - Ramazan Gokhan Atis
- Department of Urology, Istanbul Medeniyet University Goztepe Prof. Dr. Suleyman Yalcin City Hospital, Istanbul, Türkiye
| | - Asif Yildirim
- Department of Urology, Istanbul Medeniyet University Goztepe Prof. Dr. Suleyman Yalcin City Hospital, Istanbul, Türkiye
| |
Collapse
|
4
|
Gershon A, Kim PJH, Ball CG. Post mortem computed tomography is highly sensitive for pyelonephritis. A radiologic-pathologic correlation series. Forensic Sci Med Pathol 2022; 18:450-455. [PMID: 36210403 DOI: 10.1007/s12024-022-00540-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/30/2022] [Indexed: 12/14/2022]
Abstract
Pyelonephritis is a potentially lethal disease occasionally encountered in the forensic setting. Post mortem computed tomography (PMCT) is an important investigative tool for the forensic pathologist. In particular, it may be used to document and screen disease prior to traditional autopsy methods. While the sensitivity and specificity of computed tomography for pyelonephritis is well studied in the antemortem clinical setting, the test characteristics of PMCT are not yet described in the forensic pathology literature. A series of all cases of fatal pyelonephritis identified at the Ontario Forensic Pathology Service, over the course of 1 year was studied. Radiologic, clinical and pathologic findings were reviewed. A fulsome autopsy, including histopathologic examination, was considered the gold standard for sensitivity and specificity calculations. A control group consisting of 16 cases without pyelonephritis (ex: opiate toxicity) in which both PMCT and histologic data were available by way of comparison. Sixteen cases of pyelonephritis were identified. Post mortem computed tomographical signs of pyelonephritis included asymmetric renal enlargement, perinephric fat stranding, and ectopic renal air. The most (57%) individually sensitive of these findings was perinephric fat stranding but sensitivity increased to 100% if any of the three signs were present. The control group analysis revealed the specificity of air asymmetry (81%), asymmetric renal enlargement (81%), and fat stranding (69%). PMCT findings may rule in a diagnosis of pyelonephritis, and should prompt the pathologist to grossly and microscopically examine the kidneys.
Collapse
Affiliation(s)
- Ariel Gershon
- Provincial Forensic Pathology Unit, Ontario Forensic Pathology Service, Toronto, ON, Canada.
| | - Patrick J H Kim
- Provincial Forensic Pathology Unit, Ontario Forensic Pathology Service, Toronto, ON, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Christopher G Ball
- Provincial Forensic Pathology Unit, Ontario Forensic Pathology Service, Toronto, ON, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| |
Collapse
|