PET Scanning Achieves Earlier Detection Of Colorectal Cancer Recurrence
Regular monitoring with positron emission tomography (PET) scanning – which detects changes in the function of cells – achieves earlier detection of recurrences of colorectal cancer than conventional scanning that simply looks at the structure of body tissues, a prospective study has shown.
Colorectal cancer – cancer affecting the lower part of the digestive tract – is the second most common cause of cancer-related deaths in Western countries. Most people newly diagnosed with the disease undergo surgery to completely remove their tumour. However, approximately half of people who have curative surgery go on to develop recurrent disease. The median survival after surgery is two years. Adjuvant chemotherapy – anticancer drug treatment given just after surgery – improves the prognosis, but one-third of patients having this treatment still suffer a recurrence within two years after surgery.
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