Primary Hepatic Mucosa-Associated Lymphoid Tissue Lymphoma: A Case Report

Mucosa-associated lymphoid tissue (MALT) lymphomas are an extranodal subset of marginal zone B-cell lymphomas and represent u003e 8% of all types of lymphomas (1). In 1983, Isaacson and Wright (2) initially described MALT lymphomas as a distinctive type of B-cell lymphoma arising in the gastrointestinal tract. MALT lymphomas can be found at mucosal sites such as the stomach, lung, and salivary gland or from sites, which share an embryologic origin with mucosa such as the thyroid that normally lacks organized lymphoid tissue (3). Primary hepatic MALT lymphoma is an extremely rare lesion, with only 45 cases reported in the English literature (4, 5). Because of its rarity, the radiologic findings in patients with this lesion are seldom described, to our best knowledge. Herein, we reported a patient with pathologically proven primary MALT lymphoma who underwent ultrasonography, computed tomography (CT), magnetic resonance imaging (MRI), and fluorodeoxyglucose positron emission tomography with CT (FDG PET/CT).