Computed tomography positron emission tomography

Computed tomography/positron emission tomography

Positron emission tomography (PET) is increasingly being used in the preoperative staging of gastro-oesophageal cancer as it will detect otherwise occult tumour spread in up to 10% of patients who might otherwise have undergone a major surgical resection ( Figure 67.7 ). PET/CT may also be used to determine the response to neoadjuvant chemotherapy in oesophagogastric malignancies, although this is the subject of ongoing studies (see Chapter 8 ).