Abstract
We report four patients (3 females and 1 male, mean age of 62 years) with pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma confirmed by lung resection, and followed by chemotherapy. They had various CT features such as a well-circumscribed mass, nodule, or consolidation mimicking lung cancer. Bronchoscopy was performed for three of the four, but failed to result in a definitive diagnosis in any case. Lung resection was performed in all patients for the purposes of diagnosis and treatment, and pathological examination led to a definitive diagnosis of pulmonary MALT lymphoma. Adjuvant chemotherapy was performed in two patients, while it was administered as treatment for newly appearing lesions in other organs during the long-term follow-up period. One of the four patients died of another cancer 25 years after surgery. Three patients survived for 11 years, 2 and a half years, and 1 year and 8 months after surgery, respectively. We believe that pulmonary resection combined with close follow-up and treatment by a hematologist is effective to treat patients with pulmonary MALT lymphoma.
