Objective This study aims to conduct a thorough analysis of the CT and MRI imaging features associated with pulmonary mucosa-associated lymphoid tissue(MALT)lymphoma,to enhance diagnostic accuracy.Methods 34 cases of pulmonary MALT lymphoma confirmed by pathology at Affiliated Hospital of Nanjing University of Chinese Medicine from April 2010 to June 2023 were collected.A retrospective analysis encompassing clinical characteristics,alongside detailed scrutiny of CT and MRI imaging manifestations,was conducted.Notably,23 patients underwent CT contrast-enhanced examinations,and 3 patients(accounting for a total of 11 lesions)underwent chest MRI plain scan and enhanced examination.Results In the cohort of 34 patients with pulmonary MALT lymphoma,the nodular mass pattern,and pneumonia-like consolidation pattern accounted for 47.1%and 44.1%respectively.Bilateral and multiple lesions were observed in 55.9%and 58.8%of the cases,respectively.Lesions distributed along the subpleural and peribronchial regions accounted for 44.1%,with a cross-lobe distribution rate of approximately 26.5%.The important features of CT include moderate to severe homogeneous enhancement(95.5%),angiogram signs(86.3%),pulmonary interstitial thickening(61.8%),bronchial dilation(58.8%),coexisting pulmonary cysts(55.9%),and brush like margins(52.9%).The essential MRI features include homogeneous signal intensity in the non-enhancement sequence(100.0%),low apparent diffusion coefficient(ADC)value[(0.878±0.382)×10-3 mm2/s],moderate to severe homogeneous enhancement(81.8%),and platform/washout type time-signal intensity curve(TIC)(100.0%).Conclusion The imaging manifestations of pulmonary MALT lymphoma exhibit inherent complexity.Recognition of morphological nuances,distinct distribution patterns,moderate to severe homogeneous enhancement,angiogram signs,bronchial dilation,low ADC values,and platform/washout type TIC collectively contribute to the correct diagnosis of pulmonary MALT lymphoma.
NETL
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