Diffuse lung uptake of 111In octreotide from chronic emphysema.

A 62-y-old woman was found to have a lung mass and a brain mass. The brain mass was resected, and the histopathologic findings were suggestive of a gastrointestinal primary tumor with neuroendocrine features. She was referred for an 111In-octreotide SPECT/CT scan to evaluate for somatostatin-avid disease. After injection of 222 MBq (6 mCi) of 111In-octreotide, planar SPECT images (Fig. 1A) and correlative CT images (Fig. 1B) of the chest were acquired in the anterior and posterior projections at the end of 4 h and 24 h. SPECT of the chest was also performed at the end of 24 h. An 18F-FDG PET/CT scan (Fig. 1C) had been obtained 2 wk previously.