A Routine Colonoscopy With an Unexpected Finding: Reactivation of Histoplasmosis in a Patient on Tocilizumab

Abdelwahab, Nermine

doi:10.1164/ajrccm-conference.2023.207.1_meetingabstracts.a3902

Cited by 2 publications

(1 citation statement)

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“…Histoplasma has been noted in individuals receiving immunosuppressive therapies such as methotrexate, prednisone, leflunomide, adalimumab, infliximab, and etanercept [8]. In addition, histoplasmosis has been seen in a patient receiving tocilizumab [9]. Over the years, our patient received immunosuppressive agents, which likely increased her susceptibility to this condition.…”

Section: Discussionmentioning

confidence: 75%

Disseminated Histoplasmosis Mimicking Macrophage Activation Syndrome in a Patient With Rheumatoid Arthritis

Jagadish,

Notta,

Notta

et al. 2024

Cureus

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Infections caused by Histoplasma capsulatum typically do not produce symptoms. However, in individuals who are immunocompromised, progressive disseminated histoplasmosis may occur. A 67-year-old female, with lengthy history of immunosuppression due to management of rheumatoid arthritis, reported a two-month history of fatigue, headaches, and intermittent fevers following hip surgery. Due to the concern for macrophage activation syndrome and hemophagocytic lymphohistiocytosis, a bone marrow biopsy was performed. However, the results indicated the presence of Histoplasma , which was supported by the presence of Histoplasma antigens in the serum and urine, Histoplasma antibodies in the serum, positive (1,3)-beta-D-glucan results, and fungal blood cultures. The patient initially received amphotericin B, but it was switched to itraconazole due to adverse effects. The patient remains on itraconazole therapy and follows as an outpatient with an infectious diseases specialist.

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Section: Discussionmentioning

confidence: 75%