[Carcinoma of the Ascending Colon Showing Rapid Progression of Disseminated Carcinomatosis of the Bone Marrow-Report of a Case].

A 72-year-old man with ascending colon cancer was admitted to our hospital. Right hemicolectomy and lymph node dissection(D3)were performed. The pathological diagnosis was signet-ring cell carcinoma, T4a(SE), N2b, M1a(LYM), Stage Ⅳ, R0, Cur B. Capecitabine was administered after surgery. Subcutaneous bleeding, thrombocytopenia, and a rapid increase in tumor marker levels occurred 9 months after surgery. He had already developed disseminated intravascular coagulation and was admitted to our hospital immediately. CT scan revealed metastasis in the thoracic vertebrae. Bone scintigraphy demonstrated multiple abnormal areas of uptake in the costal bones and the thoracic and lumber vertebrae. We made a final diagnosis of disseminated carcinomatosis of the bone marrow by histopathological examination. Unfortunately, before starting chemotherapy, his general condition deteriorated, and he died 14 days after hospitalization. We present here a case of colon cancer with disseminated carcinomatosis of the bone marrow.