2020 Volume 34 Issue 1 Pages 81-85
A 66-year-old woman with hemosputum was pointed out as having a cavitation in the left upper lobe on chest CT. Since Aspergillus was isolated from bronchial lavage, antifungal drugs were administered for one year, with no improvement of the cavitation. Then, transbronchial lung biopsy was performed again and the histology suggested pulmonary MALT (mucosa-associated lymphoid tissue) lymphoma. Surgery was performed for definitive diagnosis, and the final diagnosis confirmed pulmonary MALT lymphoma. Although pulmonary MALT lymphoma radiologically presents with various forms of shadow, there are rare reports of MALT lymphoma presenting with cavitation. Additionally, when a patient's condition does not improve with antifungal drugs against pulmonary aspergillosis in cases such as the present patient, we should consider the possibility of coexisting malignant tumors.