[A case of huge advanced rectal cancer resected successfully after chemotherapy with mFOLFOX6].

The patient, a 75-year-old woman, who was referred to our hospital in April 2010 because of diarrhea and lower abdominal pain. Abdominal CT scan revealed a large tumor, over 8 cm in diameter within the pelvis, and colonoscopy detected rectal cancer. There was no obvious distant metastasis, although invasion to the uterus and regional lymph node metastasis was suspected.