CTICasesPulmonary MALT Lymphoma
Imaging findings
Chest CT demonstrates progressive, nodular areas of consolidation and small, well-defined nodular clusters in the left upper lobe, mimicking chronic infectious pneumonitis or sarcoidosis. Biopsy of the lung lesions and subsequent blind biopsy of the endoscopically normal gastric mucosa and duodenum confirm widespread mucosa-associated lymphoid tissue (MALT) lymphoma.
Key takeaways
Pulmonary MALT lymphoma is a slow-growing, low-grade B-cell lymphoma that often mimics benign conditions on imaging, presenting as localized clusters of nodules or areas of consolidation. It can be associated with systemic mucosal involvement that may be completely invisible to the endoscopist, requiring histological biopsy for confirmation.
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