How can you distinguish between the symptoms of colon cancer and ovarian cancer?

Occasionally similar: Colon cancer usually presents with signs of rectal bleeding or from a systemic view, abdominal distention secondary to bowel obstruction. Ovarian cancer most often shows up at the time of metastasis when ascites associated with abdominal distention but secondary to the accumulation of fluid in the periotoneal cavity. An abdominal CAT scan will readily show the difference between the two.