Colorectal cancer is currently the most common gastrointestinal malignancy. Recurrence and/or metastasis occurs in 30 to 50 percent of patients after surgery. Early diagnosis and accurate staging of postoperative recurrence and metastasis is crucial for prescribing an optimal, individualized treatment plan. Research performed in China by Dr. Chen has found that combined positron emission tomography and computed tomography can provide complete information about the location, nature and extent of lesions.
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