2014 Volume 36 Issue 5 Pages 498-503
Background. A rare case of primary pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma and hepatic MALT lymphoma are in the lung and liver is reported. Case. A 76-year-old man was referred because a chest tumor was found on computed tomography (CT) during investigation for hepatitis C. Chest CT showed a 1.2×1.0 cm tumor in the right middle lobe. The tumor was bigger than seen on his previous CT and showed accumulation on positron emission tomography (PET), therefore a malignant tumor was suspected. Contrast-enhanced magnetic resonance imaging (MRI) findings showed a 4.2-cm tumor and a 1.9-cm tumor in the right lobe of the liver, suspicious of hepatocellular carcinoma. A liver tumor biopsy was then performed, followed by right middle lobectomy for the lung tumor. The diagnosis on frozen section showed MALT lymphoma of the lung. The diagnosis of the liver tumor was also MALT lymphoma; therefore, a bone marrow biopsy was performed, revealing bone marrow involvement. Multiple organ MALT lymphomas were diagnosed, and chemotherapy was subsequently performed. Conclusion. A case of MALT lymphoma of the lung, liver, and bone marrow was reported.
