Statement of Expertise:This group has published on PET work in conjunction with oesophago-gastric cancers. Stuart Suttie has undertaken a period of research, culminating in a higher degree, based on PET imaging ( 18 FDG and 11 C-choline for predicting response to chemotherapy in oesophageal cancer
MethodsAn electronic search was performed of Pubmed, Ovid and Embase websites to identify studies, in English language, using the search terms: PET; oesophageal;oesophago-gastric; survival; cancer; response; chemotherapy and chemoradiotherapy.The reference lists were searched manually to identify further relevant studies.
ResultsTwenty two studies were identified, all using 18 FDG as the tracer, using PET to predict response in terms of pathological response and survival following neoadjuvant therapy (chemotherapy/chemoradiotherapy). PET had a varying degree of success in predicting both pathological response and survival outcomes, with only one study using PET to influence management decisions.
ConclusionsPET seems a promising technique, but large scale conclusions are hindered by small study numbers, lack of criteria as to what constitutes a response and markedly differing PET imaging times. A large randomised trial, concerning a homogeneous group of patients and tumours is required before using PET to influence management.