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Diagnosis: Types of Tumors  |
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Epithelial Cancer: Mixed epithelial carcinomas |
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The presence of two epithelial cell types in an ovarian epithelial neoplasm, each comprising at least 10% of the tumor, warrants a designation of a mixed epithelial tumor. Nonetheless, as mixed epithelial tumors are by necessity a heterogeneous group, it is more convenient and of no significant clinical import to ignore the minor components and classify tumors based solely on the predominant component, unless of course the minor component is malignant in an otherwise benign tumor, or is of a higher grade than the remainder of the tumor. As the prognosis for all cell types is the same when stratified by stage, it is preferable to designate tumors based on the predominant component.
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