Value of ultrasound in predicting the outcome of conservative treatment of testicular appendage torsion in children.

Background: The treatment modalities for testicular appendage torsion in children are classified as conservative or surgical, and the choice is controversial.

Objectives: This study aimed to identify ultrasound-based indicators influencing the outcome of conservative treatment in children with testicular appendage torsion to divide the boundaries between conservative and surgical management.

Methods: A retrospective analysis was conducted on testicular appendage torsion data of children from November 2022 and November 2023 in the Children's Hospital of Zhejiang University School of Medicine to compare the conservatively successful and conservatively unsuccessful groups' clinical and ultrasound characteristics. Furthermore, we constructed a logistic regression model and evaluated its predictive ability.

Results: We observed 405 (88.62%) and 52 (11.38%) cases of conservative success and failure, respectively. Univariate analysis indicated significant differences between these groups in testicular appendage torsion nodule size, terminology for hydrocele, scrotal wall edema, and increased epididymal blood flow (p.