A 55-Year-Old Smoker With a Persistent Right Lower Lobe Infiltrate

Extranodal Marginal Zone Lymphoma Occurring along the Trachea and Central Airway

“…The lung involvement of an EMZL usually spreads along the bronchovascular bundles and interlobular septa 8. Although no specific radiographic findings have been established for MALT lymphoma of the lung, many studies have reported that pulmonary nodules and air space consolidation are major CT patterns 5-9.…”

Primary Pulmonary Mucosa-Associated Lymphoid Tissue Lymphoma Accompanied by a Hydatid Cyst

“…[2][3][4]6 Radiography shows localized alveolar opacities with irregular boundaries and air bronchograms in half of PPL patients. 1,9 CT is more sensitive, and consolidations are observed as ground-glass opacities and peribronchial thickness.…”

“…To evaluate the dispersion, upper and lower gastrointestinal endoscopy and bone marrow biopsy are essential. 4 In bronchoalveolar lavage, increased cellularity is often seen with a high proportion of lymphocytes. Histological diagnosis is made with bronchial or transbronchial biopsy and transthoracic needle aspiration biopsy.…”

“…However, extrathoracic involvement is expected during the first 3 months of the follow-up period. 4,5 PPL is most commonly known as a non-Hodgkin lymphoma and has been divided into 2 World Health Organization groups: mucosa-associated lymphoid tissue (MALT) and non-MALT. MALT defines the lymphoid tissue located beneath the epithelial tissue that is associated with mucosal immunity.…”

“…[6][7][8][9] When lymphoma occurs in the lungs, factors such as smoking, autoimmune deficiencies, and infectious diseases are considered to correlate with the chronic antigenic stimulation of the disease. 1,[4][5][6]10,11 Primary pulmonary MALT lymphoma is most commonly seen between the 5th and 7th decades of life and rarely observed before 30 y of age. The disease occurrence has been thought to be similar in both sexes, but recent literature has reported a higher incidence in female patients.…”