Objective:To investigate the clinical features of adherent perirenal fat (APF) in patients undergoing laparoscopic adrenal surgery through peritoneal approach, and to analyze its predictors and risk factors, so as to provide reference for clinical diagnosis and treatment.Methods:A total of 86 patients who received transabdominal approach laparoscopic adrenal surgery in the Department of Urology, the Rizhao Hospital of Traditional Chinese Medicine and the First Department of Minimally invasive Urology of Shandong Provincial Hospital from February 2021 to February 2024 were retrospectively selected as the study objects. According to whether patients developed APF during the operation, they were divided into APF group (29 cases) and non-APF group (57 cases). The Mayo Adhesive Probability (MAP) score and preoperative perirenal fat CT density were compared between the two groups. Receiver operating characteristic (ROC) curve was used to analyze the value of each index in predicting the occurrence of APF. Univariate and multivariate logistic regression models were used to analyze the influencing factors of the occurrence of APF.Results:The MAP score, CT density of perirenal fat (renal vein level, adrenal tumor level, normal adrenal gland level) and CT density score of the APF group were higher than those of the non-APF group, with statistical significance (all P<0.05). Age, body mass index (BMI), perirenal fat thickness and the proportion of diabetes mellitus and hyperlipidemia in the APF group were significantly higher than those in the non-APF group, with statistical significance (all P<0.05). The area under ROC curve predicted by MAP score, CT density of perirenal fat (renal vein level, adrenal tumor level, normal adrenal level) and CT density score for APF in patients undergoing laparoscopic adrenal surgery were 0.921, 0.655, 0.628, 0.538, and 0.912, respectively. Logistic regression model results showed that high MAP score, high CT density score, old age, high BMI, large perirenal fat thickness, and complicated diabetes were independent risk factors for APF in patients undergoing peritoneal laparoscopic adrenal surgery (all P<0.05). Conclusions:In patients with adrenal tumor treated by peritoneal laparoscopic adrenal surgery, MAP score and CT perirenal fat density examination before operation are beneficial to predict whether APF will occur, which has certain guiding significance for the formulation of surgical plan.

Objective:To investigate the clinical features of adherent perirenal fat (APF) in patients undergoing laparoscopic adrenal surgery through peritoneal approach, and to analyze its predictors and risk factors, so as to provide reference for clinical diagnosis and treatment.Methods:A total of 86 patients who received transabdominal approach laparoscopic adrenal surgery in the Department of Urology, the Rizhao Hospital of Traditional Chinese Medicine and the First Department of Minimally invasive Urology of Shandong Provincial Hospital from February 2021 to February 2024 were retrospectively selected as the study objects. According to whether patients developed APF during the operation, they were divided into APF group (29 cases) and non-APF group (57 cases). The Mayo Adhesive Probability (MAP) score and preoperative perirenal fat CT density were compared between the two groups. Receiver operating characteristic (ROC) curve was used to analyze the value of each index in predicting the occurrence of APF. Univariate and multivariate logistic regression models were used to analyze the influencing factors of the occurrence of APF.Results:The MAP score, CT density of perirenal fat (renal vein level, adrenal tumor level, normal adrenal gland level) and CT density score of the APF group were higher than those of the non-APF group, with statistical significance (all P<0.05). Age, body mass index (BMI), perirenal fat thickness and the proportion of diabetes mellitus and hyperlipidemia in the APF group were significantly higher than those in the non-APF group, with statistical significance (all P<0.05). The area under ROC curve predicted by MAP score, CT density of perirenal fat (renal vein level, adrenal tumor level, normal adrenal level) and CT density score for APF in patients undergoing laparoscopic adrenal surgery were 0.921, 0.655, 0.628, 0.538, and 0.912, respectively. Logistic regression model results showed that high MAP score, high CT density score, old age, high BMI, large perirenal fat thickness, and complicated diabetes were independent risk factors for APF in patients undergoing peritoneal laparoscopic adrenal surgery (all P<0.05). Conclusions:In patients with adrenal tumor treated by peritoneal laparoscopic adrenal surgery, MAP score and CT perirenal fat density examination before operation are beneficial to predict whether APF will occur, which has certain guiding significance for the formulation of surgical plan.