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Pediatr Blood Cancer ; 64(12)2017 Dec.
Article in English | MEDLINE | ID: mdl-28660695

ABSTRACT

BACKGROUND: Cerebral sinus venous thrombosis (CSVT) is a rare but serious complication of childhood acute lymphoblastic leukemia (ALL) therapy. No available consensus exists regarding its risk factors and appropriate management due to the rarity of cases. PROCEDURES: Out of 209 ALL patients aged 1-21 years treated at the Children's Cancer Center of Lebanon between May 2002 and May 2015, 13 developed CSVT during therapy. Patient characteristics, clinical management, and outcomes were studied. RESULTS: The incidence of CSVT was 6.2% (95% confidence interval [CI]: 3.4-10.4). Using univariate analysis, increased risk of CSVT was observed with age >10 years (odds ratio [OR]: 3.56, 95% CI: 1.13-11.2), T-cell immunophenotype (OR: 4.14, 95% CI: 1.16-14.7), and intermediate/high risk disease (OR: 3.4, 95% CI: 1.03-11.7). The only statistically significant risk factor by multivariate analysis was the treatment as per the intermediate-/high-risk protocol (HR: 15.6, 95% CI: 1.43-171.3). Most cases (77%) occurred in the postinduction phases of treatment while receiving a combination of asparaginase and dexamethasone rather than prednisone. Treatment with low molecular weight heparin (LMWH) for a minimum of 3 months and until significant radiological improvement is observed resulted in 100% survival rate. All but one patient had complete neurological recovery. CONCLUSIONS: CSVT is an important complication of childhood ALL therapy. Postinduction combined asparaginase and dexamethasone intensive treatment for intermediate-/high-risk patients was the most important risk factor. Treatment with LMWH for a minimum of 3 months, and until asparginase therapy is over, with major radiological improvement seems to be effective and feasible.


Subject(s)
Precursor Cell Lymphoblastic Leukemia-Lymphoma/complications , Sinus Thrombosis, Intracranial/etiology , Adolescent , Adult , Asparaginase/therapeutic use , Child , Child, Preschool , Female , Heparin, Low-Molecular-Weight/therapeutic use , Humans , Infant , Logistic Models , Male , Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy , Retrospective Studies , Risk Factors , Sinus Thrombosis, Intracranial/drug therapy , Young Adult
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