Objective To explore the clinical characteristics of neonatal abdominal solid tumor.

Methods The case information of 31 newborns with abdominal solid tumors treated in the First Affiliated Hospital of Zhengzhou University from September 2011 to September 2021 were retrospectively analyzed and followed up.

Results Among the 31 cases, there were 17 males and 14 females. Twelve cases (38.7%) were found by prenatal ultrasound, and 19 cases (61.3%) were found after birth. There were 13 cases of malignant tumors, including 7 cases of neuroblastoma (3 cases of survival, 1 case of spontaneous regression and 3 cases of loss to follow-up), 5 cases of hepatoblastoma (1 case of survival, 2 cases of death and 2 cases of loss to follow-up), and 1 case of malignant teratoma that survived after surgical treatment. There were 18 cases of benign tumor, including 16 cases of hepatic hemangioma (4 cases of survival after operation, 1 case of spontaneous regression, 10 cases of survival with tumors and 1 case of loss to follow-up) and 2 cases of benign teratoma that had no recurrence after surgical resection.

Conclusions Prenatal examination is helpful to find some solid tumors in the early stage and the treatment plan is different according to the nature of the tumor. Early and reasonable treatment and close follow-up are of great significance to improve the prognosis of children.