Role of (18F) 2-fluoro-2-deoxyglucose positron emission tomography in upper gastrointestinal malignancies

Table 1 Prospective studies comparing the accuracy of positron emission tomography with computed tomography and/or endo-ultrasonography for the detection of lymph-node metastases

Ref.	Yr	Histology	n	Imaging	Sensitivity (%)	Specificity (%)
Flamen et al[114]	2000	SCC/AC	74	PET	39	97
				CT	63	88
				EUS	22	96
				EUS/CT	54	90
Lerut et al[115]	2000	SCC/AC	42	PET	22	91
				CT/EUS	83	45
Yoon et al[116]	2003	SCC	81	PET	30	90
				CT	11	95
Sihvo et al[18]	2004	AC	55	PET	35	91
				CT	42	45
				EUS	85	60
Lowe et al[19]	2005	SCC/AC	75	PET	82	60
				CT	84	67
				EUS	86	67
Shimizu et al[20]	2009	SCC	20	PET-CT	11-50	85-100
				Thin slice CT	22-100	69-100

PET: Positron emission tomography; CT: Computed tomography; EUS: Endoscopic ultrasound; SCC: Squamous cell carcinoma; AC: Adenocarcinoma.