Acta neurologica Belgica · 2023
Initial frontal lobe involvement in adult cerebral X-linked adrenoleukodystrophy.
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Jiang Wei, Jin Wei, Zhao Hulin, Huang Dehui, Wu Lei
Аннотация
OBJECTIVE: Adult cerebral X-linked adrenoleukodystrophy (ACALD) with initial frontal lobe involvement is a rare genetic disease that is easily misdiagnosed and underdiagnosed. We sought to improve the early identification of such diseases.
METHODS: We present three cases of adult X-linked adrenoleukodystrophy (ALD) with initial frontal lobe involvement and identify an additional 13 cases from the database. The clinical and imaging characteristics of the overall sixteen cases were analyzed.
RESULTS: The average age of onset was 37 years, with 15 male and 1 female patient. A total of 12 patients (75%) developed a decline in cerebral executive and cognitive functions. Brain trauma is the possible trigger for the onset of ALD in five patients (31%). An elevated level of very-long-chain fatty acids (VLCFA) was observed in all 15 patients on whom a plasma VLCFA was performed.10 patients with gene tests showed different mutation sites in the ABCD1 gene. Brain MRI of six patients (46%) were characterized by frontal lobe "butterfly wings"-like lesions with peripheral rim enhancement. Four patients underwent brain biopsies (patients 1, 3, 15, and 13), and five patients (31%) were initially misdiagnosed (patients 1, 2, 3, 11, and 15). Nine of the patients with follow-up records experienced poor prognoses, and five of them, unfortunately, died (56%).
CONCLUSION: ACALD patients with anterior patterns tend to be misdiagnosed. The early clinical manifestation is a decline in cerebral executive and cognitive function. Brain trauma may be a trigger for this pattern. Brain MRI findings are characterized by frontal lobe "butterfly wing"-like lesions with peripheral rim enhancement. The determination of the VLCFA levels and the genetic detection of the causative mutations are required to confirm the diagnosis.
METHODS: We present three cases of adult X-linked adrenoleukodystrophy (ALD) with initial frontal lobe involvement and identify an additional 13 cases from the database. The clinical and imaging characteristics of the overall sixteen cases were analyzed.
RESULTS: The average age of onset was 37 years, with 15 male and 1 female patient. A total of 12 patients (75%) developed a decline in cerebral executive and cognitive functions. Brain trauma is the possible trigger for the onset of ALD in five patients (31%). An elevated level of very-long-chain fatty acids (VLCFA) was observed in all 15 patients on whom a plasma VLCFA was performed.10 patients with gene tests showed different mutation sites in the ABCD1 gene. Brain MRI of six patients (46%) were characterized by frontal lobe "butterfly wings"-like lesions with peripheral rim enhancement. Four patients underwent brain biopsies (patients 1, 3, 15, and 13), and five patients (31%) were initially misdiagnosed (patients 1, 2, 3, 11, and 15). Nine of the patients with follow-up records experienced poor prognoses, and five of them, unfortunately, died (56%).
CONCLUSION: ACALD patients with anterior patterns tend to be misdiagnosed. The early clinical manifestation is a decline in cerebral executive and cognitive function. Brain trauma may be a trigger for this pattern. Brain MRI findings are characterized by frontal lobe "butterfly wing"-like lesions with peripheral rim enhancement. The determination of the VLCFA levels and the genetic detection of the causative mutations are required to confirm the diagnosis.