2.Idiopathic spinal cord herniation.
Abhishek PRASAD ; Rahat BRAR ; Shradha SINHA ; Shaleen RANA
Singapore medical journal 2013;54(2):e43-5
Idiopathic spinal cord herniation (ISCH) is a rare cause of progressive myelopathy. This condition has recently seen an increased frequency of diagnosis, possibly due to increased awareness and the use of magnetic resonance (MR) imaging. ISCH is characterised by herniation of the thoracic spinal cord through an anterior or anterolateral dural defect. Patients usually present with a Brown-Séquard-like syndrome, which is gradually progressive and may evolve into severe paraparesis. This disease has a characteristic radiological appearance, and in most cases, excellent postsurgical outcome. We report ISCH and its imaging appearance in a 31-year-old woman with classical presentation, and discuss the current concepts regarding the aetiopathogenesis, radiological features and management of the disease.
Adult
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Female
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Hernia
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diagnosis
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diagnostic imaging
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Humans
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Image Processing, Computer-Assisted
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Imaging, Three-Dimensional
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Magnetic Resonance Imaging
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Radiography
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Spinal Cord
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diagnostic imaging
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pathology
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physiopathology
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Spinal Diseases
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diagnosis
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diagnostic imaging
3.Aberrant myeloid antigen co-expression is correlated with high percentages of CD34-positive cells among blasts of acute lymphoblastic leukemia patients: an Indian tertiary care center perspective.
Rahul Kumar SHARMA ; Abhishek PUROHIT ; Venkatesan SOMASUNDARAM ; Pravas Chandra MISHRA ; Mrinalini KOTRU ; Ravi RANJAN ; Sunil KUMAR ; Sudha SAZAWAL ; Hara Prasad PATI ; Seema TYAGI ; Renu SAXENA
Blood Research 2014;49(4):241-245
BACKGROUND: Aberrant myeloid antigen (MA) co-expression and high expression of CD34 antigen on the blasts of acute lymphoblastic leukemia (ALL) patients are independently reported to have a role in pathogenesis and prognosis. This study was conducted to determine whether these two parameters are related. METHODS: A total of 204 cases of ALL were included in an analysis of blast immunophenotypic data. CD34 expression was categorized as low when less than 50% of blasts were CD34-positive (CD34low) and as high when 50% or more were CD34-positive (CD34high). RESULTS: Of 204 cases of ALL, 163 and 41 were of B-cell origin (B-ALL) and T-cell origin (T-ALL), respectively. Of all cases, 132 (64.7%) showed co-expression of MA and among these, 101 (76.51%) were CD34high, while the remaining 31 (23.48%) were CD34low. Of 72 cases without MA co-expression, 25 (34.72%) were CD34high and 47 (67.25%) were CD34low. Furthermore, of 163 cases of B-ALL, 111 showed co-expression of MA and 84 of these were CD34high. Of 52 cases of B-ALL without MA expression, 22 were CD34high. Among 41 cases of T-ALL, 21 co-expressed MA, 17 of which were CD34high. Moreover, all 20 cases of T-ALL without co-expression of MA were CD34low. These differences were statistically significant. CONCLUSION: We observed a strong correlation between aberrant MA expression and CD34high expression on the blasts of ALL. We hypothesize that these different patient subsets may represent unique prognostic characteristics.
Antigens, CD34
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B-Lymphocytes
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Flow Cytometry
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Humans
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Immunophenotyping
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Precursor Cell Lymphoblastic Leukemia-Lymphoma*
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Precursor T-Cell Lymphoblastic Leukemia-Lymphoma
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Prognosis
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T-Lymphocytes
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Tertiary Care Centers*