“…Usually, primary pleural lymphoma is closely associated with chronic tuberculosis pyothorax, pneumothorax for treatment of lung tuberculosis, or some other chronic stimulation of B-cells such as rheumatoid arthritis, Sjögren's syndrome, or Epstein-Barr virus (3, 4). Considering these factors, primary malignant lymphoma arising in the chest wall without pre-existing pleural disease, as with the present case, are not common (1, 2).…”