Abstract
Rosai-Dorfman disease or sinus histiocytosis with lymphadenopathy is a rare benign histiocytic proliferative disorder of unknown etiology first described in 1969. It typically affects older females and most common presentation is with massive lymphadenopathy and nonspecific systemic symptoms; therefore, it is often confused with lymphoproliferative disorders [1, 2]. We present the case of a 69-year-old woman with nasal obstruction as only complaint. Laboratory tests showed normal leukocyte count with elevated ANC (absolute neutrophil count), normal RBC count with normal MCV (mean corpuscular volume) and MCH (mean corpuscular hemoglobin), elevated ESR (erythrocyte sedimentation rate), and normal IgG, IgA, and IgM values. Evaluation revealed a nasopharyngeal mass, which was biopsied and reported emperipolesis with positive CD68 and S-100; typical and differential findings of this disease [1, 2]. 18F FDG PET/CT was performed to determine the extent and involvement of the disease. Considering the presence of few symptoms and no significant laboratory abnormality, treating physicians decided to start a regimen of corticosteroids (prednisolone) for a period of 4 months, after which a follow-up with 18F FDG PET/CT will be performed.
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Vanessa Murad and Gi Jeong Cheon declare that they have no conflict of interest.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the Helsinki declaration as revised in 2013 and its later amendments or comparable ethical standards.
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The institutional review board of our institute approved this retrospective study, and the requirement to obtain informed consent was waived.
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Murad, V., Cheon, G.J. Rosai-Dorfman Disease: Importance of 18F FDG PET/CT to Determine Extension and Extranodal Involvement. Nucl Med Mol Imaging 55, 146–148 (2021). https://doi.org/10.1007/s13139-021-00683-w
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DOI: https://doi.org/10.1007/s13139-021-00683-w