Lesson of the Week: False localising signs in the spinal cord: Fig 1

Relief of lumbar symptoms after cervical spine decompression in the patients with an asymptomatic cervical spinal stenosis: A case series

“…This high occurrence of TSS can be compounded by 5% per year of development of cervical myelopathy from asymptomatic cervical stenosis [16] . False localization signs [21] of spinal cord have been described previously. D R S Jameison et al [21] had a case which described the sensory level 11 segments lower to the pathological level.…”

“…False localization signs [21] of spinal cord have been described previously. D R S Jameison et al [21] had a case which described the sensory level 11 segments lower to the pathological level. False localization leads to delay in diagnosis and a timely diagnosis of cervical myelopathy has been shown to halt the disease progression.…”

“…Scott M et al [20] described tumors of high thoracic and cervical spine as cause of lower extremity symptoms. One explanation has been given is that the spinothalamic tracts cross obliquely 2 or 3 level [21] above the affected segment but it still doesn't explain the pathological levels present 9 segments [22] or 7 segments [23] away from sensory level. Another explanation is that the lamination of sensory tracts places the cervical tracts more centrally but this theory doesn't explain the occurrence of this phenomenon in centrally occurring lesions.…”

Relief of lumbar symptoms after cervical spine decompression in the patients with an asymptomatic cervical spinal stenosis: A case series

“…This high occurrence of TSS can be compounded by 5% per year of development of cervical myelopathy from asymptomatic cervical stenosis [16] . False localization signs [21] of spinal cord have been described previously. D R S Jameison et al [21] had a case which described the sensory level 11 segments lower to the pathological level.…”

“…False localization signs [21] of spinal cord have been described previously. D R S Jameison et al [21] had a case which described the sensory level 11 segments lower to the pathological level. False localization leads to delay in diagnosis and a timely diagnosis of cervical myelopathy has been shown to halt the disease progression.…”

“…Scott M et al [20] described tumors of high thoracic and cervical spine as cause of lower extremity symptoms. One explanation has been given is that the spinothalamic tracts cross obliquely 2 or 3 level [21] above the affected segment but it still doesn't explain the pathological levels present 9 segments [22] or 7 segments [23] away from sensory level. Another explanation is that the lamination of sensory tracts places the cervical tracts more centrally but this theory doesn't explain the occurrence of this phenomenon in centrally occurring lesions.…”

False localizing sign caused by schwannoma in cervical spinal canal at C1-2 level

“…In 1956, Scott [ 3 ] described the irritation of ascending spinothalamic tract as the likely cause of sciatica-like lower extremity pain caused by a tumor at high thoracic and cervical cord. Jamieson et al [ 13 ] presented several hypotheses regarding the origin of false localizing sign in their clinical case report. Above all, these authors suggested that myelopathy originated from the destruction of the anterior horn cell by venous obstruction and subsequent static hypoxia, and this hypothesis was evaluated by Taylor and Byrnes in 1974 as the most reasonable.…”

False localising levels in spinal cord compression

“…Different explanations are proposed for such discrepancies. Differential decussation of fiber tracts to and from upper and lower limbs and lamination of sensory fibers, especially in the anterolateral sensory pathways, have been discussed as a cause, but they are unlikely to produce a difference of 10-11 and up to 14 segments [1,4,6,17]. In very high cervical compression this mechanism may indeed play a role.…”

Relief of lumbar symptoms after cervical spine decompression in the patients with an asymptomatic cervical spinal stenosis: A case series

“…This high occurrence of TSS can be compounded by 5% per year of development of cervical myelopathy from asymptomatic cervical stenosis [16] . False localization signs [21] of spinal cord have been described previously. D R S Jameison et al [21] had a case which described the sensory level 11 segments lower to the pathological level.…”

“…False localization signs [21] of spinal cord have been described previously. D R S Jameison et al [21] had a case which described the sensory level 11 segments lower to the pathological level. False localization leads to delay in diagnosis and a timely diagnosis of cervical myelopathy has been shown to halt the disease progression.…”

“…Scott M et al [20] described tumors of high thoracic and cervical spine as cause of lower extremity symptoms. One explanation has been given is that the spinothalamic tracts cross obliquely 2 or 3 level [21] above the affected segment but it still doesn't explain the pathological levels present 9 segments [22] or 7 segments [23] away from sensory level. Another explanation is that the lamination of sensory tracts places the cervical tracts more centrally but this theory doesn't explain the occurrence of this phenomenon in centrally occurring lesions.…”

False localizing sign caused by schwannoma in cervical spinal canal at C1-2 level

“…In 1956, Scott [ 3 ] described the irritation of ascending spinothalamic tract as the likely cause of sciatica-like lower extremity pain caused by a tumor at high thoracic and cervical cord. Jamieson et al [ 13 ] presented several hypotheses regarding the origin of false localizing sign in their clinical case report. Above all, these authors suggested that myelopathy originated from the destruction of the anterior horn cell by venous obstruction and subsequent static hypoxia, and this hypothesis was evaluated by Taylor and Byrnes in 1974 as the most reasonable.…”

False localising levels in spinal cord compression

“…Different explanations are proposed for such discrepancies. Differential decussation of fiber tracts to and from upper and lower limbs and lamination of sensory fibers, especially in the anterolateral sensory pathways, have been discussed as a cause, but they are unlikely to produce a difference of 10-11 and up to 14 segments [1,4,6,17]. In very high cervical compression this mechanism may indeed play a role.…”

Relief of lumbar symptoms after cervical spine decompression in the patients with an asymptomatic cervical spinal stenosis: A case series

“…This high occurrence of TSS can be compounded by 5% per year of development of cervical myelopathy from asymptomatic cervical stenosis [16] . False localization signs [21] of spinal cord have been described previously. D R S Jameison et al [21] had a case which described the sensory level 11 segments lower to the pathological level.…”

“…False localization signs [21] of spinal cord have been described previously. D R S Jameison et al [21] had a case which described the sensory level 11 segments lower to the pathological level. False localization leads to delay in diagnosis and a timely diagnosis of cervical myelopathy has been shown to halt the disease progression.…”

“…Scott M et al [20] described tumors of high thoracic and cervical spine as cause of lower extremity symptoms. One explanation has been given is that the spinothalamic tracts cross obliquely 2 or 3 level [21] above the affected segment but it still doesn't explain the pathological levels present 9 segments [22] or 7 segments [23] away from sensory level. Another explanation is that the lamination of sensory tracts places the cervical tracts more centrally but this theory doesn't explain the occurrence of this phenomenon in centrally occurring lesions.…”

False localizing sign caused by schwannoma in cervical spinal canal at C1-2 level

“…In 1956, Scott [ 3 ] described the irritation of ascending spinothalamic tract as the likely cause of sciatica-like lower extremity pain caused by a tumor at high thoracic and cervical cord. Jamieson et al [ 13 ] presented several hypotheses regarding the origin of false localizing sign in their clinical case report. Above all, these authors suggested that myelopathy originated from the destruction of the anterior horn cell by venous obstruction and subsequent static hypoxia, and this hypothesis was evaluated by Taylor and Byrnes in 1974 as the most reasonable.…”

False localising levels in spinal cord compression

“…Different explanations are proposed for such discrepancies. Differential decussation of fiber tracts to and from upper and lower limbs and lamination of sensory fibers, especially in the anterolateral sensory pathways, have been discussed as a cause, but they are unlikely to produce a difference of 10-11 and up to 14 segments [1,4,6,17]. In very high cervical compression this mechanism may indeed play a role.…”