Multicentric reticulohistiocytosis: a case report.

Area of Science:

• Rheumatology
• Dermatology
• Oncology

Background:

• Multicentric reticulohistiocytosis (MR) is a rare, systemic non-Langerhans cell histiocytosis.
• It is characterized by the proliferation of mononuclear phagocytes.

Observation:

• This case report details the clinical presentation, history, and histopathological findings of MR.
• The study highlights the common delay in diagnosis, with arthritis often preceding mucocutaneous lesions by years.

Findings:

• Histopathological examination of synovium is vital, especially during synovectomies for undiagnosed arthritis.
• MR can be associated with significant internal diseases, including malignancies.

Implications:

• Prompt recognition of MR and thorough investigation for underlying malignancies are essential.
• Integrating dermatological and rheumatological findings aids in early diagnosis and management of this rare condition.