BACKGROUND.The use of prophylactic cranial irradiation (PCI) in patients with small cell lung cancer (SCLC) has been tempered by fears of detrimental effects on cognitive function.

• 背景：由于对认知功能的不利影响，小细胞肺癌（SCLC）患者的预防性头颅放疗（PCI）运用得少了。