Cutaneous Plasmacytosis and Idiopathic Multicentric Castleman Disease: A Spectrum of Disease?

Madeeha Drissi, Rachel Dunlap, Lara Clayton, Philipp W. Raess, Stephanie Mengden Koon, Kevin White

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Cutaneous/systemic plasmacytosis (C/SP) is a plasma cell disorder characterized by reddish-brown patches, lymphadenopathy, and hypergammaglobulinemia. The degree to which C/SP overlaps with other plasma cell proliferative disorders and neoplasms is incompletely understood. We present the case of a patient with a several-year history of cutaneous plasmacytosis and evidence of systemic involvement with concurrent idiopathic multicentric Castleman disease (iMCD) involving a lymph node. There have been only a few reports of systemic iMCD preceded by a long, asymptomatic phase of cutaneous manifestations. We discuss the relationship between C/SP and iMCD and elaborate on the pathophysiological overlap of these 2 conditions and potential similarities in their pathogenesis. We suggest that the 2 diseases may represent the same entity presenting on a spectrum, with individuals diagnosed with C/SP at risk for progression to iMCD.

Original languageEnglish (US)
Pages (from-to)294-296
Number of pages3
JournalAmerican Journal of Dermatopathology
Issue number4
StatePublished - Apr 1 2022


  • cutaneous plasmacytosis, systemic plasmacytosis, idiopathic multicentric Castleman's disease, multicentric plasmacytic castleman's disease, multicentric Castleman's Disease, HHV-8

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Dermatology


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