Abstract:

Objective To review the clinical, imaging, and pathological features of primary pulmonary mucosa-associated lymphoid tissue lymphoma (MALT lymphoma) and analyze the causes of misdiagnosis. Methods A case of primary pulmonary MALT lymphoma confirmed by pathology was analyzed retrospectively. Results The patient had a recurrent dry cough, which was relieved after anti-inflammatory treatment at a local hospital. But then the symptoms recurred, so the patient came to Jiangsu Provincial Hospital of Traditional Chinese Medicine. After chest CT and magnetic resonance imaging (MRI), the patient was diagnosed with multicentric adenocarcinoma or inflammatory granuloma. CT-guided percutaneous lung biopsy was performed, and finally, primary pulmonary MALT lymphoma was diagnosed by pathology. Conclusion Primary pulmonary MALT lymphoma usually has no specific clinical manifestations and is difficult to be diagnosed by imaging examination. The biopsy is recommended when anti-inflammatory therapy is ineffective, which is helpful to avoid misdiagnosis and mistreatment.

Key words: lymphoma, B-cell, marginal zone, lung, dry cough