| immunoblast | An antigenically stimulated lymphocyte; a large cell with well-defined basophilic cytoplasm, a large nucleus with prominent nuclear membrane, distinct nucleoli, and clumped chromatin. See: lymphocyte transformation. Origin: immuno-+ G. Blastos, germ (05 Mar 2000) |
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| immunoblastic lymphadenopathy | A disorder characterised by proliferation of arborizing small vessels, prominent immunoblastic proliferations and amorphous acidophilic interstitial material. Clinical manifestations include fever, sweats, weight loss, generalised lymphadenopathy and frequently hepatosplenomegaly. (12 Dec 1998) |
| immunoblastic lymphoma | <tumour> A monomorphous proliferation of immunoblasts involving the lymph nodes; it may develop in some patients with angioimmunoblastic lymphadenopathy. (05 Mar 2000) |
| immunoblastic sarcoma | <tumour> Obsolete term for immunoblastic lymphoma. (05 Mar 2000) |