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Somatostatin Receptor Scintigraphy in Liver Metastasis Detection from Gastroenteropancreatic Neuroendocrine Tumors

¹ Nuclear Medicine Division, University Tor Vergata, Rome, Italy
² Department of Nuclear Medicine, University of Sassari, Sassari, Italy
³ Nuclear Medicine Unit, University La Sapienza, Rome, Italy
⁴ Department of Internal Medicine, University of Sassari, Sassari, Italy
⁵ Gastroenterology Division, University La Sapienza, Rome, Italy

View larger version (37K): [in a new window]   FIGURE 1. Patient 15 with ileal carcinoid, who previously underwent surgery and who developed single liver metastasis ascertained on histologic examination. Lesion is visible on SPECT SRS (single arrow) on transaxial, sagittal, and coronal views (A), whereas planar SRS and CIP (B, both CT and MRI) were negative.

View larger version (55K): [in a new window]   FIGURE 2. Patient 36 with pancreatic gastrinoma in whom abdominal SPECT SRS (A) reveals 2 liver metastases (single arrow), both visible on sagittal and coronal views. Only 1 liver metastasis is visible on transaxial view. Only 1 lesion is visualized by both planar imaging and MRI (B, double arrows). On CT view, negative for metastasis, primary tumor is visible.

View larger version (53K): [in a new window]   FIGURE 3. Patient 56 with rectal carcinoid in whom abdominal SPECT SRS (A) shows 2 liver metastases in 1 lobe (single arrow) on transaxial, sagittal, and coronal views, whereas planar SRS and CIP (B, both CT and MRI) are negative. Patient, who was classified as having NEM according to CIP data, was reclassified by SPECT SRS as having resectable metastases (RM) and underwent potentially curative surgery.