[A case of poorly differentiated adenocarcinoma of the rectum with disseminated carcinomatosis of the bone marrow successfully treated with mFOLFOX-6/bevacizumab].

A 45-year-old woman, complaining of back pain and bloody stool was given a diagnosis of poorly differentiated adenocarcinoma of the rectum with disseminated carcinomatosis to bone marrow and disseminated intravascular coagulation syndrome (DIC). We started chemotherapy using mFOLFOX-6 with simultaneous DIC treatment. After we confirmed that DIC had improved following 2 courses of mFOLFOX-6, bevacizumab was added to mFOLFOX-6. Laboratory studies revealed a serum CEA level of 314.4ng/ml, which improved to 4.6ng/ml after a total of 6 courses of chemotherapy. Colonoscopy findings showed almost normal rectal mucosa after a total of 10 courses of chemotherapy. Outpatient treatment was started after 5 courses of chemotherapy, and was continuing according to schedule at 7 months from the onset of this disease.