[Clinical Features of Von-Hippel-Lindau Syndrome and Its Ultrasonographic Diagnosis of Abdominal Mass].

Objective To analyze the clinical features of Von-Hippel-Lindau(VHL)syndrome and explore the diagnostic value of abdominal ultrasound for this disease.Methods The clinical features including age at first diagnosis,symptoms,signs,affected organs,number of operations,and diagnostic examinations of 35 patients with VHL syndrome admitted to our center from January 1994 to December 2017 were retrospectively analyzed.The diagnostic value of abdominal ultrasound for VHL syndrome was analyzed.Results Pheochromocytoma(n=14)and nervous system hemangioblastoma(n=13)were the common firstly-identified tumors.Nervous system hemangioblastoma(n=21),pheochromocytoma(n=19),renal carcinoma(n=17),and pancreatic mass(n=15)were common tumors.The main surgical reasons were nervous system hemangioblastoma(n=22),pheochromocytoma(n=23)and renal carcinoma(n=13).Abdominal organ involvements were found in 33 patients,which were first detected by abdominal ultrasound in 20 patients and were found accidently during routine health checkups in 6 patients.The ultrasound results were accurate in 27 of 33 adrenal gland scans,13 of 16 pancreas scans,and 8 of 19 kidney scans.Conclusions When multiple tumors are detected in the kidney,adrenal gland,and pancreas by ultrasound,the possibility of VHL syndrome should be considered.When the clinical findings suggest the possibility of VHL syndrome,ultrasound can discover and diagnose the abdominal tumors and can also be used for the long-term follow-up of the tumors.Therefore,ultrasound is an important method in the screening and follow-up of patients with VHL syndrome.