Somatostatin receptor scintigraphy is very useful in identifying the presence of lymph node metastases, even with a small rectal carcinoid tumor. This is of considerable importance when scheduling surgery and the CT and EUS are normal. The use of an intraoperative gamma-probe detector assists in the surgical excision of the metastatic lymphatic nodes, especially because they had been detected only using SRS, and when their exact location is uncertain.
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