A case report of extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT) arising from the kidney

Abstract

Background : We report herein on a case of extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT) arising from the kidney.
Case : A 59-year-old woman. An imprint cytology renal biopsy specimen consisted of mainly small lymphocytes and plasma cells with little cytologic atypia. The polymerase chain reaction technique for IgH gene re-arrangement was required for the diagnosis.
Conclusion : Atypical lymphocytes is weak, cytology was struggling to find a diagnosis. We need to reference as well as the clinical findings and imaging findings, make a careful diagnosis.