A 52-year-old woman presented with a right middle lobe (RML) lung nodule suspicious for malignancy. Thoracoscopic middle lobectomy was performed. The pathology report revealed a pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma in association with light-chain deposition disease (LCDD). Pulmonary MALT lymphoma and LCDD are unusual disorders presenting in the lung, and the association between these 2 conditions is even more uncommon. The optimal management for these patients is controversial, although surgical resection of localized well-circumscribed lesions may represent an effective therapeutic approach.
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