primary lesion

lesion /le·sion/ (le´zhun) any pathological or traumatic discontinuity of tissue or loss of function of a part.

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angiocentric immunoproliferative lesion  a multisystem disease consisting of invasion and destruction of body tissues and structures by atypical lymphocytoid and plasmacytoid cells resembling a lymphoma, often progresssing to lymphoma.

Armanni-Ebstein lesion  vacuolization of the renal tubular epithelium in diabetes.

benign lymphoepithelial lesion  enlargement of the salivary glands with infiltration of the parenchyma by polyclonal B cells and T cells, atrophy of acini, and formation of lymphoepithelial islands.

Blumenthal lesion  a proliferative vascular lesion in the smaller arteries in diabetes.

central lesion  any lesion of the central nervous system.

Ghon's primary lesion  Ghon focus.

Janeway lesion  a small erythematous or hemorrhagic lesion, usually on the palms or soles, in bacterial endocarditis.

primary lesion  the original lesion manifesting a disease, as a chancre.

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primary lesion

Etymology: L, primus + laesio, hurting

a sore or wound that develops at the point of inoculation of the disease, usually referring to a syphilis chancre. Also called initial lesion.