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[Primary malignant tumor of the appendix: clinicopathological analysis of 22 cases]
Bin Huang1, Mei-juan Di, Hong-sheng Liu
1Department of Pathology, The First Peopleos Hospital of Xiaoshan, Hangzhou, Xiaoshan 311200, China.
Objective:
To investigate the clinicopathological and immunohistochemical features of primary malignant tumor of the appendix.
Methods:
The clinical data were reviewed; and histopathological and immunohistochemical features were analyzed in 22 cases with primary malignant tumor of the appendix.
Result:
In 22 cases of primary malignant tumor of the appendix, 19 cases were carcinoid and 3 were adenocarcinoma. Immunohistochemistry showed that the carcinoid was positively reacted to the neuroendocrine markers, and the adenocarcinoma was negatively reacted to the neuroendocrine markers.
Conclusion:
Immunohistochemistry is useful in diagnosis of primary malignant tumor of the appendix, a rare type of cancer.
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