Thyroid Gland Non-Hodgkin Lymphoma

**Semantic type:** Neoplastic Process

**Definition:** A non-Hodgkin lymphoma primarily involving the thyroid gland. The vast majority of cases are either diffuse large B-cell lymphomas or extranodal marginal zone B-cell lymphomas of mucosa-associated lymphoid tissue. Hashimoto (chronic lymphocytic) thyroiditis is almost always present.

**Synonyms:** - Non-Hodgkin's Lymphoma of Thyroid - Non-Hodgkin's Lymphoma of Thyroid Gland - Non-Hodgkin's Lymphoma of the Thyroid - Non-Hodgkin's Lymphoma of the Thyroid Gland - Primary Thyroid Gland Non-Hodgkin's Lymphoma - Thyroid Gland Non-Hodgkin's Lymphoma - Thyroid Non-Hodgkin Lymphoma - Thyroid Non-Hodgkin's Lymphoma