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Unusual cystic presentation of pulmonary nodular amyloidosis associated with MALT-type lymphoma

Depts of ¹ Pathology, ² Respiratory Disease, ³ Cardiovascular and Thoracic Surgery, and ⁴ Radiology, INSERM U578 CHU A Michallon, Grenoble, France.

CORRESPONDENCE: E. Brambilla, Dept of Pathology, CHU A Michallon, BP 217, 38043 Grenoble Cedex 09, France. Fax: 33 476765949. E-mail: EBrambilla{at}chu-grenoble.fr

Keywords: Amyloidosis, cystic, lung, lymphoma, mucosa-associated lymphoid tissue, nodular

Received: November 20, 2005
Accepted January 16, 2007

The case reported herein consists of nodular pulmonary amyloidosis presenting with unusual cystic radiological features which reveal a pulmonary localisation of an extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma).

The present case is the first to report a radiological presentation of nodular pulmonary amyloidosis in the absence of Sjögren's syndrome.

Although transthoracic fine-needle biopsy was helpful for the diagnostic of amyloidosis, final diagnosis of associated MALT-type lymphoma required an open lung biopsy.

This emphasises the importance of performing surgical investigations in pulmonary nodular amyloidosis in order to depict the presence of underlying lung tumours or lymphoproliferative disorders.