고립성 폐결절로 발현한 파종성 림프절 외 변연부 B-세포 림프종 1예

Extranodal marginal zone B-cell lymphoma of the mucosa-associated lymphoid tissue (MALT lymphoma) is usually indolent. Although it was reported recently that about 20-30% cases of MALT lymphoma presented with a disseminated disease at diagnosis, it was described as a disease localized at diagnosis and remaining stable for a prolonged period. However, only a few cases of MALT lymphoma involved the lung and gastrointestinal tract all at once. We report a case of a 73-year-old man with disseminated MALT lymphoma. He presented with non-productive cough, initial chest radiograph showed a nodule in the right lower lobe. The diagnosis of stage IV MALT lymphoma was made by CT scan, video-assisted thoracoscopic excisional biopy, gastrofiberscopic biopsy and bone marrow biopsy. The lymphoma involved the lung, stomach and bone marrow at the time of diagnosis. Because he refused chemotherapy, he discharged after Helicobacter pylori eradication without chemotherapy. Regular follow-up examination did not show any evidence of disease progression over 22 months. MALT림프종은 질병의 진행이 느리고, 진단 당시 국소적인 병변이 대부분이며, 폐와 위장관을 동시에 침범하는 경우는 매우 드물다. 저자들은 흉부 단순촬영에서 고립성 폐결절이 발견된 73세 남자 환자에서 위, 폐, 골수를 침범한 파종성 MALT림프종 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.