A, pretreatment CT scan of pelvic lymphadenopathy (identified by white arrow) in 1 patient with documented response to 1α-OH-D2. A, pretreatment CT scan of pelvic lymphadenopathy (identified by white arrow) in 1 patient with documented response to 1α-OH-D2. B, week 36 CT scan of the same patient showing regression of pelvic lymphadenopathy (identified by white arrow) meeting definition for a partial response. Glenn Liu et al. Clin Cancer Res 2002;8:2820-2827 ©2002 by American Association for Cancer Research