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Immune response in hosts with cadaveric dural grafts. Report of two cases
1Department of Neurosurgery, Emory University School of Medicine, Atlanta, Georgia.
Insights
Cadaveric dural grafts can trigger rare immune responses, causing serious complications like meningeal signs and cerebrospinal fluid eosinophilia in neurosurgery patients. Graft removal offers a permanent solution to these adverse reactions.
Area of Science:
- Neurosurgery
- Immunology
- Transplantation
Background:
- Cadaveric human dura is a common graft material for dural defect repair in neurosurgery.
- Immune responses to cadaveric dural grafts are infrequently reported in medical literature.
Observation:
- Two patients developed meningeal signs and cerebrospinal fluid (CSF) eosinophilia weeks after receiving cadaveric dural implants.
- One patient also exhibited peripheral eosinophilia.
Findings:
- The patients' symptoms temporarily improved with corticosteroid treatment.
- Permanent resolution of symptoms was achieved only after the removal of the dural grafts.
- These cases highlight the potential for significant morbidity due to immune-type reactions to cadaveric dural grafts.
Implications:
- Clinicians should consider immune-mediated reactions in patients presenting with neurological symptoms post-dural graft surgery.
- This underscores the importance of monitoring for and recognizing rare adverse events associated with allografts.
- Further research into the mechanisms of immune response to dural allografts may improve graft safety and patient outcomes.
Abstract:
The use of cadaveric human dura has been critical in the repair of dural defects since the dawn of neurosurgery. Reports in the literature of immune response to this type of graft have been extremely rare. Two patients are presented who received cadaveric dural implants with resulting meningeal signs and cerebrospinal fluid eosinophilia several weeks after surgery. Peripheral eosinophilia was present in one patient. The signs and symptoms resolved temporarily during corticosteroid therapy and permanently upon removal of the offending grafts. These cases illustrate that an immune-type reaction can occur with significant morbidity in patients receiving cadaveric dural grafts. A proposed mechanism for this response is discussed.