Lung tumor
Lymphoma and lymphoid infiltrates

Author: Deepali Jain, M.D. (see Authors page)

Revised: 3 January 2017, last major update September 2012

Copyright: (c) 2003-2017,, Inc.

PubMed Search: chronic lymphocytic leukemia / small lymphocytic lymphoma
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Cite this page: CLL / SLL. website. Accessed January 21st, 2019.
Definition / general
  • Chronic lymphocytic leukemia / small lymphocytic lymphoma
  • Usually asymptomatic pulmonary nodules or infiltrates in elderly
  • Involves the lung at autopsy in 30% of cases, may cause significant pulmonary impairment
Gross description
  • Well defined, encapsulated mass, homogenous gray cut surface
Microscopic (histologic) description
  • Monomorphic low grade lymphocytic infiltrate with pseudofollicles
Differential diagnosis
  • Reactive lymphoid infiltrate: polymorphic lymphocytes, germinal centers, other inflammatory cells