The number of lesions that could be identified clearly as single foci will be determined for each patient. The same anatomic areas will be imaged with 68Ga-DOTATATE PET and 111In-penteoctreotide Scintigraphy to ensure relevant comparison of lesion detection. Because of confluence and inability to clearly delineate single liver lesions in some cases, liver metastases will be classified as 1 organ metastasis, independent of the number of liver metastases present. Lymph nodes smaller than 1 cm on CT or MRI and showing marked avidity for 68Ga- DOTATATE and 111In-penteoctreotide will be labeled as positive for disease. The presence of lesions will be confirmed by cross-sectional imaging of all patients with CT or MRI.
