Marginal zone B-cell lymphoma of MALT

Extranodal marginal zone B-cell lymphoma of MALT type... 

MARGINAL ZONE B-CELL LYMPHOMA OF MALT TYPE... 

The differential diagnosis of LIP is low-grade marginal zone B-cell lymphoma of MALT (MALToma) and interstitial pneumonitides in the lung, including nonspecific interstitial pneumonitis and hypersensitivity pneumonitis (Table 2). 

Isaacson, P. G., Muller-Hermelink, H. K., Piris, M. A., Berger, F., Nathwani, B., Swerdlow, S. H., and Harris, N. L., Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma). In World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of Haematopoietic and Lymphoid Tissues (E. S. Jaffe, N. L. Harris, H. Stein, and J. W. Vardiman, eds.), pp. 157-160. IARC Press, Lyon, 2001. 

Lymphoproliferative malignancies occur in approximately 7% of patients with primary SjS, a prevalence that is 40 times higher than in the general population (192). MALT-type lymphomas of the lung (Fig. 9), also called BALT lymphomas, are extranodal marginal-zone B-cell neoplasms, not usually associated with viruses (192). BALT lymphoma is usually detected in routine or incidental examination. HRCT features are similar to those of patients without SjS (214). The course of the disease is quite indolent, even in cases with extensive or prominent HRCT abnormalities (214). 

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