Histopathological examination. (A) Goblet cell carcinoid composed of cells with signet ring cells appearance with varied dilated cytoplasm due to mucin production withdisplacement ofthe nuclei to the periphery of the neuroendocrine cells location in the cytoplasm (HE, ×200); ((B) and (C)) positive staining for chromogranin A (B) and synaptophysin (C) demonstrating neuroendocrine differentiation (×200); (D) mucin stain (Alcian Blue, ×200).