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Updated: Aug 16, 2026

Human Neural Organoids for Studying Brain Cancer and Neurodegenerative Diseases
Published on: June 28, 2019
Rosai-Dorfman disease of the central nervous system
P Purav1, K Ganapathy, V S Mallikarjuna
1Department of Neurosurgery, Apollo Specialty Hospital, Chennai, India.
Abstract:
Rosai-Dorfman disease (RDD) is an idiopathic, non-neoplastic, lymphoproliferative disorder characterized by sinus histiocytosis and massive lymphadenopathy. When RDD involves the central nervous system the lesion simulates a meningioma. Histological and immunohistochemical confirmation is essential for a definitive diagnosis. In this paper, ten cases of RDD confined to the central nervous system are reported. Another case with orbital RDD was excluded. Nine cases involved the cranial cavity alone; in one, the cervical extradural region was also involved. Treatment consisted of surgical excision or biopsy. Histology and immunohistochemistry revealed a mixed cell population of predominantly mature histiocytes with evidence of emperipolesis and strong positivity for S100 protein in all cases. No recurrence was observed during follow up ranging from three months to eight years.
Insights
Rosai-Dorfman disease (RDD) is a rare non-cancerous condition. Central nervous system RDD can mimic meningioma, requiring histological and immunohistochemical diagnosis for effective management.
Area of Science:
- Neuropathology
- Oncology
Background:
- Rosai-Dorfman disease (RDD) is an idiopathic, non-neoplastic lymphoproliferative disorder.
- Central nervous system (CNS) involvement by RDD can present as a meningioma-like lesion.
Observation:
- This study reports ten cases of RDD exclusively affecting the CNS.
- Nine cases involved the cranial cavity, with one also affecting the cervical extradural region.
Findings:
- Histological and immunohistochemical analysis confirmed a mixed cell population with emperipolesis and S100 protein positivity in all CNS RDD cases.
- Surgical excision or biopsy was the primary treatment modality.
- No recurrences were observed during follow-up periods ranging from three months to eight years.
Implications:
- Accurate diagnosis of CNS RDD is crucial, distinguishing it from neoplastic lesions like meningioma.
- The findings support the efficacy of surgical management and highlight the benign, non-recurrent nature of CNS RDD.
- Further research into the pathogenesis and optimal management strategies for CNS RDD is warranted.
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