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Primary cutaneous extramedullary plasmacytoma secreting lambda IgG.

R Llamas-Martin·C Postigo-Llorente·F Vanaclocha-Sebastian·R Gil-Martin·L Iglesias-Diez
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Abstract

An adult male was described, who developed a tumour on his left arm, which was diagnosed as a primary cutaneous extramedullary plasmacytoma after histopathological, electron microscopic and immunocytochemical studies. Further studies ruled out the presence of multiple myeloma, extramedullary plasmacytoma of another site, or paraproteinaemia/paraproteinuria. During a relapse of the tumour 2 1/2 years after initial treatment, a new immunocytochemical study demonstrated that the tumour cells expressed monoclonal lambda IgG at the intracytoplasmic level, an unusual finding.

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R Llamas-Martin, C Postigo-Llorente, F Vanaclocha-Sebastian, R Gil-Martin, L Iglesias-Diez. 1993. Primary cutaneous extramedullary plasmacytoma secreting lambda IgG.. https://doi.org/10.1111/j.1365-2230.1993.tb02216.x

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