TY - JOUR
T1 - Idiopathic hypereosinophilic syndrome
T2 - a new cause of vasculitis of the central nervous system
AU - Rice, C M
AU - Kurian, K M
AU - Renowden, S
AU - Whiteway, A
AU - Price, C
AU - Scolding, N J
PY - 2015/5
Y1 - 2015/5
N2 - Idiopathic hypereosinophilic syndrome (IHES) is a primary haematological condition characterised by persistent, otherwise unexplained hypereosinophilia sufficient to cause organ damage. Various neurological complications are reported, but very few have mentioned CNS pathology and none has included CNS vasculitis. Our objective here is to report IHES as a new cause of histopathologically confirmed CNS vasculitis. A 39-year-old man presented with a relapsing sub-acute encephalopathy, with severe headaches, confusion and drowsiness, myoclonus, ataxia and papilloedema. He had a history of nephrotic syndrome 18 years earlier, stable for the past 5 years on low-dose corticosteroids and low-dose tacrolimus (2 mg bd); lichen planus, and (15 years previously) aloplecia totalis. On admission, he had a marked peripheral eosinophilia (up to 9.1 × 10(9)/dL), which—it subsequently became clear—had been intermittently present for 16 years. After extensive investigation, biopsies of brain and bone marrow confirmed diagnoses of cerebral vasculitis, with lymphocytic and macrophage (but not eosinophilic) cellular infiltration of blood vessel walls, and IHES. CNS vasculitis can therefore now be added to the list of neurological complications of IHES. A dramatic and sustained neurological improvement, and likewise of the eosinophilia, following treatment with corticosteroids and cyclophosphamide, emphasises the tractability of this newly described form of CNS vasculitis.
AB - Idiopathic hypereosinophilic syndrome (IHES) is a primary haematological condition characterised by persistent, otherwise unexplained hypereosinophilia sufficient to cause organ damage. Various neurological complications are reported, but very few have mentioned CNS pathology and none has included CNS vasculitis. Our objective here is to report IHES as a new cause of histopathologically confirmed CNS vasculitis. A 39-year-old man presented with a relapsing sub-acute encephalopathy, with severe headaches, confusion and drowsiness, myoclonus, ataxia and papilloedema. He had a history of nephrotic syndrome 18 years earlier, stable for the past 5 years on low-dose corticosteroids and low-dose tacrolimus (2 mg bd); lichen planus, and (15 years previously) aloplecia totalis. On admission, he had a marked peripheral eosinophilia (up to 9.1 × 10(9)/dL), which—it subsequently became clear—had been intermittently present for 16 years. After extensive investigation, biopsies of brain and bone marrow confirmed diagnoses of cerebral vasculitis, with lymphocytic and macrophage (but not eosinophilic) cellular infiltration of blood vessel walls, and IHES. CNS vasculitis can therefore now be added to the list of neurological complications of IHES. A dramatic and sustained neurological improvement, and likewise of the eosinophilia, following treatment with corticosteroids and cyclophosphamide, emphasises the tractability of this newly described form of CNS vasculitis.
U2 - 10.1007/s00415-015-7720-9
DO - 10.1007/s00415-015-7720-9
M3 - Article (Academic Journal)
C2 - 25843450
VL - 262
SP - 1354
EP - 1359
JO - Journal of Neurology
JF - Journal of Neurology
SN - 0340-5354
IS - 5
ER -