Primary cerebral ALK-1-Positive anaplastic large cell lymphoma in a child
ABSTRACT A 4-year-old African American male was referred to the Pediatric Neurosurgery Service for evaluation of new onset seizures and worsening mental status. An MRI of the brain revealed a pineal region mass with diffuse leptomeningeal enhancement and compression of the basilar cisterns. A biopsy of the brain revealed histologic and immunophenotypic findings characteristic of ALK-1+ anaplastic large cell lymphoma (ALCL). ALCL rarely occurs in the central nervous system and poses a significant diagnostic challenge often leading to a delay in the initiation of appropriate treatment. We describe a case of a rapidly deteriorating clinical course in a child with central nervous system ALCL and review the current literature on ALCL occurring in the central nervous system.
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- "Case Age (yr)/Sex Location Clinical pre- sentation Immune status Pathological features Treat- ment Outcome (post- diagnosis) Hallmark cells Positive Tcell markers Positive Bcell markers Lin- eage EMA Necro- sis ALK-1 positive cases 1. Havlioglu et al. 1995  4/F Multifocal lobes, brain stem, spinal cord Headaches, neck stiffness Normal Y N N Null Pos N Ex, R, C NED at 73 months 2. Buxton et al. 1998  10/F Rt. parietal lobe, falx Left hemiparesis Normal ND CD3, CD45RO ND T ND Y Ex, R, C Dead at 6 months from post chemo sepsis 3. Abdulkader et al. 1999  13/M Rt. fontal and parietal lobe (meningeal involve- ment) As mycobacterial CNS infection Normal Y CD45RO N T Pos Y C Dead shortly after chemotherapy 4. Ponzoni et al. 2002  29/M Lt. fontal and temporal lobes Fever, headache, generalized seizures ND Few CD3, CD45RO N T Pos Y R, C NED at 19 months 5. George et al. 2003  17/M Rt. parietal dura ND Normal ND CD3, CD43, CD45RO N T ND Y Ex, R NED at 57 months 6. George et al. 2003  18/F Lt. temporal lobe (dural involvement) ND Normal ND CD45RO N T ND N Ex, R, C NED at 62 months 7. Rupani et al. 2005  17/M Rt. fronto-parietal lobe Headache, left partial seizures Normal Y CD43 ND T Pos N Ex, R, C Dead at 4 month 8. Cooper et al. 2006  39/M Rt. parieto-occipital lobe Headaches, seizures Normal Few CD3, CD43 N T Pos ND Ex, R, C NED at 9 months 9. Carmichael et al. 2007  38/M Rt. parieto-occipital lobe Seizure, left hemi- paresis Normal ND CD45 ND T ND ND R, C NED at 15 months 10. Karikari et al. 2007  4/ M Frontal and parietal lobe (leptomeningeal involvement ), pineal region Generalized tonic clonic seizures ND ND CD3, CD4, CD7 N T ND ND R, C ED at 1 months 11. Merlin et al. 2008  "
ABSTRACT: Anaplastic large cell lymphoma (ALCL) is a rare T-cell lymphoma composed of CD30-positive lymphoid cells. ALCL arising in the dura matter of the brain is even more infrequent, in which only one case has been reported worldwide so far. We report a case of a 30-year-old immunocompetent male with a dura-based mass, radiographically consistent with meningioma. However, the excised mass via a left parieto-occipital craniotomy was composed of large, pleomorphic lymphoid cells to be immunopositive for CD3, CD30, anaplastic lymphoma kinase protein-1 (ALK-1) and epithelial membrane antigen (EMA), and immunonegative for CD20, CD15 and CD68. Multiple ALK gene fusion signals in the ALK locus were detected by fluorescence in situ hybridization (FISH) analysis. The patient was treated with CHOP chemotherapy and intrathecal methotrexate along with brain radiation therapy, which resulted in a complete remission. In an analysis of 25 previously reported primary CNS ALCLs, ALK-1 positivity was shown to be prevalent in younger age, as ALCL occurs outside the brain. Patient less than 23 years, ALK-1 positivity and unifocal tumor may be associated with a better prognosis. However, sex, dural or leptomeningeal involvement, immune status, and tumor necrosis do not appear to have any influence on survival.International journal of clinical and experimental pathology 01/2013; 6(8):1643-51. · 1.78 Impact Factor
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ABSTRACT: Objective Primary central nervous system lymphoma (PCNSL) is an extremely rare condition in childhood. We report the first case of PCNSL in a child in Iran. Clinical presentation A nine-year-old boy was referred to Mofid Hospital with the history of headache of four months and seizure of 2 months duration. Magnetic resonance imaging of the brain revealed a hyper-intense lesion in left fronto-parietal area with secondary satellite lesions. Biopsy of the brain mass was performed. Pathologic findings showed brain lymphoma and immunohistochemistry confirmed this diagnosis. The treatment started with intrathecal and systemic chemotherapy in combination with radiotherapy.Iranian Journal of Child Neurology 01/2009; 3(2):45-47.
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ABSTRACT: We report a case of cerebellar liponeurocytoma in a 62 year old woman. Histologically, the tumour was of low aggressiveness, composed of small cells with areas of lipidised cells and was positive for neuronal markers (synaptophysin and neuron specific enolase). The principal features of this unusual entity are reviewed and the pathological aspects of its differential diagnosis are discussed.07/2009; 42(3):221–223. DOI:10.1016/S1699-8855(09)70186-2