[Clinical and ultrasonographic features of testis tumor in children of different ages].

Objective: To explore the ultrasonographic characteristics of testis tumor in children of different ages.

Methods: We retrospectively analyzed the clinical data, ultrasonographic results, surgical methods and pathological findings of 76 children with testis tumor treated in Shanghai Children's Hospital between April 2013 and March 2018. According to the age at the first diagnosis, we divided the patients into a 0－4 yr (n = 57) and a 5－12 yr group (n = 19), and compared the clinical manifestations, tumor markers, ultrasonographic features such as the tumor size, echogenicity, calcification and color flow images, pathological findings, and surgical methods between the two groups of patients.

Expression of adenosine receptors in human retinal pigment epithelium cells in vitro.

Background: Adenosine receptors (ADORs) have been reported to play a role in experimental myopia. This study aimed to determine the distribution of ADORs in human retinal pigment epithelium (RPE) cells cultured in vitro.

Methods: Human RPE cells (cell line D407) were cultured in vitro.