inflammatory myofibroblastic tumor

(redirected from plasma cell pseudotumor)

inflammatory myofibroblastic tumor

heterogeneous group of morphologically similar lesions composed of myofibroblasts, plasma cells, and other chronic inflammatory cells. In children and young adults, occurs preferentially in soft tissue and viscera and shows clonal features. In adults, it may occur in any site and is usually not clonal.
See also: pseudotumor.
References in periodicals archive ?
4] Because of its histological heterogeneity, it has received many names over the past years, including plasma cell pseudotumor, inflammatory pseudotumor, xanthomatous pseudotumor, pseudosarcomatous myofibroblastic proliferation, inflammatory myofibrohistiocytic proliferation, atypical fibromyxoid tumor and atypical myofibroblastic tumour.
In fact, the current World Health Organization classification of lung tumors adopted the name myofibroblastic tumor as the term for a tumor composed of myofibroblastic spindle cells accompanied by an inflammatory infiltrate of plasma cells, lymphocytes, and eosinophils and listed IPT as a synonym for IMT, along with other names including plasma cell granuloma, plasma cell pseudotumor, inflammatory myofibrohistiocytic proliferation, and omental mesenteric myxoid hamartoma.

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