Abstract: To study the application of color Doppler ultrasound in the diagnosis and differential diagnosis of abdominal masses in children. Methods The clinical data of 40 children with abdominal mass confirmed by pathology in our hospital between May 2014 and May 2015 were retrospectively analyzed. All the children were diagnosed by color Doppler ultrasound. The diagnostic results of color Doppler ultrasound were analyzed. Results The results of color Doppler ultrasound diagnosis showed that among the 40 cases, 30 cases were definitely diagnosed, 3 cases were misdiagnosed and 7 cases were indefinitely diagnosed. Among them, there were 9 cases with nephroblastoma, and 7 cases were in accordance with the pathological findings, 8 cases were diagnosed as renal space occupying lesions before operation. Among them, there were 6 cases with hepatoblastoma, 5 cases were confirmed, 1 case was misdiagnosed as hepatoblastoma; there were 8 cases with severe hydronephrosis, mainly induced by congenital ureterostenosis, deformity and other reasons, of whom the causes of 2 cases with water were unclear, and 6 cases were confirmed; there were 11 cases with congenital bile duct cyst, the cause of 1 cases was not clear, and 10 cases were confirmed; there were 2 cases with neuroblastoma, 1 case did not indicate the source, 1 case was confirmed and 1 case was with repeated kidney. Preoperative ultrasound only indicated hydronephrosis, and it was not confirmed; there were 3 cases with teratoma, including 1 case with ovarian teratoma, 1 case with sacral tail teratoma and 1 cases with retroperitoneal teratoma. Among them, the origin of 1 case was unknown, and 2 cases were confirmed, and after surgery, they were confirmed as sacral tail teratoma. Conclusion Ultrasound diagnosis is quickly, simple to operate, safe and non-invasive, with low cost and high diagnostic rate. It can be used for the diagnosis of abdominal masses in children, and the clinical application value is high, especially in pediatric surgery, it has obvious advantages.

Key words: Color Doppler ultrasound, Children, Abdominal mass, Diagnosis, Differential diagnosis