Abstract
Background: Tuberous sclerosis complex (TSC) is a rare autosomal dominant genetic disease with multiple organ system involvement. Renal angiomyolipoma (RAML) is a leading cause of death in TSC-adult patients. The aim of the study was to investigate the clinical features of tuberous sclerosis-associated renal angiomyolipoma among Chinese population so that clinicians can make better clinical diagnosis.Methods: Retrospective review of clinical data of 145 patients with tuberous sclerosis-associated renal angiomyolipoma treated in the Department of Urology, Peking Union Medical College Hospital from January 2014 to January 2019. Analysis of age and gender distribution, tumor stage, and combined clinical manifestations. All analyses used a significance level of 0.05 and were presented in SPSS23.0 software.Results: A total of 145 patients were enrolled. There were 51 males and 94 females. The male to female ratio was 1:1.84, with mean age of 30.50±9.79 years (range 7-58 years). 92 cases were mainly distributed in 21-40 age group, accounting for 63.45%. Among all 6 age groups, 21-30 age group contained the largest number of patients(48 case，33.10%). 86 (59.31%) renal angiomyolipoma cases were classified stage 6; 19 cases had a history of tumor rupture and hemorrhage, including 7 selective arterial embolization, 8 partial nephrectomy and 4 nephrectomy. Subependymal nodules (104/122cases, 85.24%), angiofibromas /fibrous cephalic plaque (121 cases, 83.44%), hypomelanotic macules (89 cases, 61.39%), shagreen patch (65 cases, 44.83%) and ungual fibromas (62 cases, 42.07%) were the main combined clinical manifestation. 91.30% (42/46) lymphangioleiomyomatosis cases were female.Conclusion: Patients with TSC-RAML were mainly young and middle-aged females with giant Angiomyolipoma. Most tumor were ranged in stage 5 and 6. Nervous system characteristics (subependymal nodules), dermatological lesions (angiofibromas or fibrous cephalic plaque, hypomelanotic macules, shagreen patch and ungual fibromas) were common combined clinical manifestations. Lymphangioleiomyomatosis showed an obvious difference in gender distribution
A single-center analysis of clinical features of 145 tuberous sclerosis complex—associated renal angiomyolipoma cases in China
