case_images: PMC3566469_01
case_images: Computed tomography scan shows well-defined and complex density mass in mesentery or adjacent proximal jejunum.
case_images: jkss-84-114-g001.jpg
case_images: PMC3566469_01_jkss-84-114-g001.jpg
case_images: F1
case_images: Computed tomography (CT) scan demonstrated an 8.2 x 7.3 cm sized well-defined mass with complex density located in the mesentery or adjacent proximal jejunum (Fig. 1).
case_images: Well-capsulated mass originated near the ligament of Treitz.
case_images: jkss-84-114-g002.jpg
case_images: PMC3566469_01_jkss-84-114-g002.jpg
case_images: F2
case_images: At laparotomy, a well-encapsulated mass was found to be arising from the small bowel mesentery near the ligament of Treitz (Fig. 2).
case_images: (A) Cells composing tumor are arranged in trabecular pattern and well encapsulated (H&E, x40). (B) Cellular nucleus has coarsely granular chromatin pattern without mitosis (H&E, x400).
case_images: jkss-84-114-g003.jpg
case_images: PMC3566469_01_jkss-84-114-g003.jpg
case_images: F3
case_images: There was no mitosis (Fig. 3A, B).
case_images: Tumor expresses strong positivity in immunohisochemical stain with synaptophysin (A), CD56 (B), and cytokeratin (C) (x200).
case_images: jkss-84-114-g004.jpg
case_images: PMC3566469_01_jkss-84-114-g004.jpg
case_images: F4
case_images: Immunohistochemistry showed the tumor to be positive for multiple neuroendocrine markers including synaptophysin (Fig. 4A), CD56 (Fig. 4B), cytokeratin (Fig. 4C).