[High-frequency ultrasonographic characteristics and clinical features of primary testicular lymphoma in children].

Objective To investigate the high-frequency ultrasonographic characteristics and clinical features of primary testicular lymphoma (PTL) in children. Methods We retrospectively analyzed the high-frequency ultrasonographic manifestations and clinical characteristics of 11 cases of PTL in children, all confirmed by postoperative pathology. Results Most of the PTL patients were school-age children, with painless testicular enlargement as the initial symptom. Preoperative grey-scale ultrasonography showed involvement of the unilateral testis in 8, bilateral testes in 3, and both the testis and epididymis in 2 of in the 11 children with PTL. Nine of the cases were displayed as diffuse lesion and the other 2 as nodular lesion, all with extremely low echogenicity. Color Doppler flow imaging (CDFI) revealed abundant blood flow signals but no liquefaction or calcification echo in the lesions. Follow-up ultrasonography after immunochemotherapy showed complete disappearance of the lesion in 3 cases, reduction in another 3, no significant change in 1, and enlargement in the other 4. Conclusions PTL in children has some specific ultrasonographic characteristics. A deeper insight into the ultrasonographic characteristics and clinical features of PTL may help improve ultrasonographic diagnosis of the disease.