The two tumors that had been detected in former president Chen Shui-bian’s (陳水扁) seminal vesicle earlier this year are nonmalignant blood clots, doctors said yesterday after Chen underwent a follow-up medical checkup, adding that they were trying to determine why a third clot had formed.

Chen was granted temporary release from prison so he could get a medical checkup at Chang Gung Hospital’s branch in Linkou District (林口), New Taipei City (新北市), yesterday morning. He was transported from Taipei Prison to the hospital at about 6am.