label: primary cutaneous marginal zone B-cell lymphoma
label_lc: primary cutaneous marginal zone b-cell lymphoma
description: "Extranodal lymphoma of lymphoid tissue associated with mucosa that is in contact with exogenous antigens. Many of the sites of these lymphomas, such as the stomach, salivary gland, and thyroid, are normally devoid of lymphoid tissue. They acquire mucosa-associated lymphoid tissue (malt) type as a result of an immunologically mediated disorder."