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MRI brain without gadolinium showing multiple brain lesions. (A) sagittal T1. (B)(C) axial T2. (D) axial T1. (E) coronal T2. (F) axial T1.
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Computed tomography CT scan of the chest abdomen and pelvis showing: (a) small adenopathies in the Barety's space (the largest one measuring 13 mm), (b) multiple adenopathies in the retroperitoneal space (the largest one measuring 3 cm in diameter), and (c) a 6 cm mass attached to the right colon proximal to the liver flexure.
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A 6 cm mass attached to the right colon proximal to the liver flexure (Fig. 2).
Mass involving the right colon.
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Right hemicolectomy with anastomosis was performed, and mesenteric tumor, mesenteric lymph nodes and omentum were excised (Fig. 3).
Pathologic examination with H&E staining at high magnification showing cytological malignant features such as polygonal cells and moderately irregular nucleus arranged in strands.
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On microscopic examination, results were consistent with a poorly differentiated large cell neuroendocrine colonic carcinoma grade 3 (WHO) measuring around 10 cm infiltrating the serosa, sub-serosa, sub-mucosa and omentum, characterized with a polygonal cells and moderately irregular nucleus arranged in strands (Fig. 4).
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