pseudomalignancy

A benign tumor that appears, clinically or histologically, to be a malignant neoplasm. SEE ALSO: pseudotumor.

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pseu·do·ma·lig·nan·cy (soo″do-mə-ligґnən-se) [pseudo- + malignancy] any of several types of tumors exhibiting benign clinical behavior but having a distinctly malignant microscopic appearance; see also pseudolymphoma and pseudomelanoma.