Anaplastic large cell lymphoma arising in bone: Report of a case of the monomorphic variant with the t(2;5) (p23;q35) translocation

M. A. Lones, W. Sanger, S. L. Perkins, L. J. Medeiros

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


Anaplastic large cell lymphoma (ALCL) represents approximately 2% of all non-Hodgkin lymphomas according to the recent Non-Hodgkin Lymphoma Classification Project. As defined in the revised European-American classification of lymphoid neoplasms (REAL), ALCL is a neoplasm of T-cell or null-cell lineage; 20% to 60% of cases are associated with the t(2;5)(p23;q35) translocation. ALCL commonly involves nodal as well as a wide variety of extranodal sites, although primary or secondary involvement of bone is rare. We describe the case of a 71-year-old man with stage IE T-cell ALCL, monomorphic variant, arising in the left anterior fifth rib and involving adjacent soft tissue without other sites of disease. The monomorphic histologic features hindered the initial recognition of this neoplasm as ALCL. However, strong uniform CD30 antigen expression and subsequent demonstration of the t(2;5)(p23;q35) translocation and anaplastic lymphoma kinase (ALK) immunoreactivity led to the correct diagnosis. We identified only 5 reported cases of T-cell and null-cell ALCL arising in bone and only 2 of these cases involved a single bone site. All 5 previously reported cases were ALCL of the classic type. We report a case of ALCL that is unique to our knowledge. This case of monomorphic ALCL was localized to bone and tumor cells contained the t(2;5)(p23;q35) translocation.

Original languageEnglish (US)
Pages (from-to)1339-1343
Number of pages5
JournalArchives of Pathology and Laboratory Medicine
Issue number9
StatePublished - 2000

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Medical Laboratory Technology


Dive into the research topics of 'Anaplastic large cell lymphoma arising in bone: Report of a case of the monomorphic variant with the t(2;5) (p23;q35) translocation'. Together they form a unique fingerprint.

Cite this