Lysinibacillus massiliensis panniculitis masquerading as erythema nodosum: A case report

Jay J. Jin, Phillip J. Keith, Nathan W. Cummins, Sunanda V. Kane, Bobbi S. Pritt, Joyce L. Sanchez

Research output: Contribution to journalArticlepeer-review


Lysinibacillus massiliensis, formerly Bacillus massiliensis, is an environmental Gram-positive bacillus that is generally non-pathogenic. Rare case reports in immunosuppressed patients have described sepsis with this organism. In this study, we report a case of L massiliensis as a cause of infectious panniculitis mimicking erythema nodosum after infusion of autologous adipose-derived stem cells in an immunosuppressed patient with refractory Crohn's disease. This case highlights the importance of care providers to consider exposures and host factors when interpreting culture results with otherwise benign organisms.

Original languageEnglish (US)
Article numberofx072
JournalOpen Forum Infectious Diseases
Issue number2
StatePublished - Mar 1 2017


  • Adipose-derived stem cell treatment
  • Erythema nodosum
  • Lysinibacillus massiliensis
  • Panniculitis

ASJC Scopus subject areas

  • Oncology
  • Clinical Neurology


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