PMC5413775_01
CT scans show a 10-mm-diameter nodule in segment four of the right lung (left upper panel). Formalin-fixed and paraffin-embedded sample from the lung tumor shows cells with an eosinophilic cytoplasm, low nuclear grade and oval nuclei. The cells show rosette structures (right panel). The tumor was histologically diagnosed as a typical carcinoid with immunoreactive ACTH (left lower panel).
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PMC5413775_01_edmcr-2017-160144-g001.jpg
fig1
Finally, repeated computed tomography (CT) scans and FDG-PET/CT showed a nodule of 10 mm diameter in segment four of the right lung (Fig. 1). Trans-bronchial lung biopsy was performed, and the patient was histologically diagnosed with a typical carcinoid with immunoreactive ACTH (Fig. 1).  
Contrast-enhanced transverse CT scan shows intestinal dilatation with collection of gas, gas in the bowel wall (left upper panel, arrowheads) and hepatic portal venous gas (right upper panel, arrow). Continual necrosis was found between the ileum and transverse colon (left lower panel). Formalin-fixed and paraffin-embedded sample shows capillary microthrombi of the mucous membrane (right lower panel, arrow).
edmcr-2017-160144-g002.jpg
PMC5413775_01_edmcr-2017-160144-g002.jpg
fig2
Enhanced CT findings showed intestinal dilatation and hepatic portal venous gas (Fig. 2).