Thyroid Gland Mucosa-Associated Lymphoid Tissue Lymphoma

**Semantic type:** Neoplastic Process

**Definition:** An extranodal marginal zone B-cell lymphoma arising from mucosa-associated lymphoid tissue in the thyroid gland. The vast majority of cases are associated with chronic lymphocytic thyroiditis.

**Synonyms:** - Thyroid MALT Lymphoma - Thyroid Mucosa-Associated Lymphoid Tissue Lymphoma