Clinical Significance of Adherent Perinephric Fat in Patients Undergoing Partial Nephrectomy

Condition(s) studied

Study summary

The aim of this study is to gain a better understanding of the phenomenon of adherent perinephric fat (APF), which occurs in some patients undergoing partial nephrectomy (PN). This phenomenon, so-called "toxic fat", is a commonly recognized problem among urologists, but its significance has not yet been fully understood. The study aims to identify new clinical risk factors for APF occurrence and evaluate its impact on functional, perioperative, and oncological treatment outcomes. The study will be conducted on patients who are qualified for PN surgery. Prior to the surgical procedure, venous blood will be collected, which will be used for various measurements, such as blood morphology, kidney parameters, inflammation markers, liver function tests, glucose, and lipid profile. In addition, medical data will be collected concerning the patient's overall health, observed changes in the kidney, perioperative course, hospitalization, and histopathological characteristics of the tumor. After treatment, patients will be followed up for up to 60 months. The knowledge gained from this study can significantly assist in making decisions about surgical treatment and thus contribute to improving the treatment outcomes of patients with kidney tumors.

Eligibility

Primary outcome measure(s)

• Evaluation of clinical risk factors for the occurrence of adherent perinephric fat in patients undergoing partial nephrectomy. — Data gathered in the pre-operative period. Blood samples collected one day prior to surgery.
  The following variables will be evaluated: 1. Anthropometric (sex; age in years; weight in kilograms; height in centimeters; waist circumference in centimeters) and comorbidity data (assessed with Charlson Comorbidity Index, 0-24). 2. Laboratory test results (C-reactive protein in mg/l; total cholesterol in mg/dl; triglycerides in mg/dl; high density lipoprotein in mg/dl; low density lipoprotein in mg/dl; ferritin in ng/ml; fasting glucose in mg/dl; creatinine in mg/dl; glomerular filtration rate calculated with the Modification of Diet in Renal Disease equation in ml/min/1,73 m²; white blood cell in G/l; lymphocyte in G/l; monocyte in G/l; hemoglobin in g/dl; platelets in G/l; neutrophil in G/l). 3. Imaging data and tumor features (maximum tumor diameter in millimeters; perirenal fat thickness in millimeters; Mayo Adhesive Probability score, 0 - 5; RENAL Nephrometry Score, 4 - 12).

Trial sites (1)

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