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. The disease is primary cutaneous marginal zone B-cell lymphoma (MONDO_0015813). Also known as: C-MALT, PCMZL, Primary cutaneous marginal zone B cell lymphoma of mucosa-associated lymphoid tissue, Primary cutaneous marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue, Primary cutaneous marginal zone lymphoma of mucosa-associated lymphoid tissue, cutaneous Immunocytoma, marginal zone B cell lymphoma of skin, marginal zone B cell lymphoma of the skin.