PMC2647933_01
Computed tomography scan showing appendix mucocele.
1752-1947-3-28-1.jpg
PMC2647933_01_1752-1947-3-28-1.jpg
F1
Serum carcinoembryonic antigen (CEA) was <2 mug/L and the computed tomography (CT) scan revealed an appendiceal mass (Figure 1) without any surrounding lymph node enlargement.
(A) Mucinous cystadenoma and goblet cell carcinoid with hematoxylin and eosin (x200). (B) Goblet cell mucin positive with alcian blue/diastase/periodic acid Schiff stain (x200). (C) Chromogranin immunohistochemistry positive (x200).
1752-1947-3-28-2.jpg
PMC2647933_01_1752-1947-3-28-2.jpg
F2
Proximally, the appendix was infiltrated by adenocarcinoid composed of islands of epithelial cells with abundant intracellular mucin and eosinophilic granules (Figure 2).