Mucosa-associated
Lymphoid Tissue (MALT) lymphoma comprised of monoclonal B cells is a type of
non-Hodgkin’s lymphoma (NHL) that commonly occurs in the stomach. These lesions
rarely metastasize from the stomach to other sites, especially to the airways.
This report describes a patient with multiple bronchial MALT lymphoma lesions
that developed after the remission of gastric MALT lymphoma. Furthermore, we
discuss bronchoscopy was useful for both diagnosis and determining the extent
of lesion expansion. A 90-year-old woman
who had received radiation treatment for gastric MALT lymphoma seven years
earlier was referred to our hospital after experiencing exertional dyspnea for
three weeks. Physical examination demonstrated tachypnea; peripheral SpO2 was
82%; and breath sounds of the right lower lung field were absent. Laboratory
examinations were within the normal range.
Chest CT showed severe and extensive area of stenosis, thickened
bronchial walls, and polyp-like lesions from the trachea to the bilateral main
bronchus, atelectasis of the right lower lobe, resulting in complete
interruption of the right lower bronchus and right pleural fluid. Flexible bronchoscopy,
performed with the consent of the patient, revealed edematous mucosa mimicking
multiple nodules and a thickened bronchial wall irregularly extending from the
carina to the bilateral main bronchus with mild stenosis. The right middle
bronchus was completely obstructed.
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