A Case of Primary Pulmonary Extranodal Marginal Zone B-Cell Lymphoma of the MALT Type

An extranodal marginal zone B-cell lymphoma of the mucosa-associated lymphoid tissue (MALT) is the most frequent type of non-Hodgkin's lymphoma that primarily involves the lung. The radiographical discovery of a pulmonary lesion in an asymptomatic patient is the most common clinical presentation. In general, the prognosis of a localized extranodal pulmonary marginal zone B-cell lymphoma of MALT type is excellent.We report a case of a 61-year-old man who sought evaluation of an incidentally discovered mass in the lung.