Project description:Pediatric nodal marginal zone lymphoma (PNMZL) is an unusual and poorly understood primary B-cell nodal neoplasms. Patients are predominantly young males presenting with localized disease. The tumor shows overlapping morphological features with pediatric-type follicular lympgoma. The alterations involved in the pathogenesis of PNMZL are not known.
Project description:Pediatric nodal marginal zone lymphoma (PNMZL) is an unusual and poorly understood primary B-cell nodal neoplasms. Patients are predominantly young males presenting with localized disease. The tumor shows overlapping morphological features with pediatric-type follicular lympgoma. The alterations involved in the pathogenesis of PNMZL are not known.
Project description:Pediatric-type follicular lymphoma (PTFL) is a variant of FL with distinctive clinico-pathological features. Patients are predominantly young males presenting with localized lymphadenopathy; the tumor shows high grade cytology and lacks both BCL2 expression and t(14;18) translocation. The genetic alterations involved in the pathogenesis of PTFL are not known.
Project description:Overlap Between Pediatric Nodal Marginal Zone Lymphoma (PNMZL) and Pediatric-Type Follicular Lymphoma (PTFL) : Morphological and Molecular Analysis
Project description:Overlap Between Pediatric Nodal Marginal Zone Lymphoma (PNMZL) and Pediatric-Type Follicular Lymphoma (PTFL) : Morphological and Molecular Analysis (OncoScan)
Project description:Overlap Between Pediatric Nodal Marginal Zone Lymphoma (PNMZL) and Pediatric-Type Follicular Lymphoma (PTFL) : Morphological and Molecular Analysis (CytoScan)
Project description:Determination of the ion channel and transporters gene expression profile of Follicular Lymphoma (FL). We have compared it with that of the relapsed follicular pymphomas and with that of the more aggressive Diffuse Large B Cell Lymphoma (DLBCL).
Project description:Nodal marginal zone lymphoma is a poorly defined entity in the WHO classification, largely based on criteria by exclusion and the diagnosis often remains subjective. Follicular Lymphoma lacking t(14;18), have similar characteristics which results in a major potential diagnostic overlap which this study aims to dissect. Four subgroups of lymphoma samples (n=56) were analyzed with high-resolution arrayCGH; Nodal marginal zone lymphoma, t(14;18)-negative Follicular Lymphoma, localized t(14:18)-positive Follicular Lymphoma and disseminated t(14;18)-positive Follicular Lymphoma. Gains on chromosomes 7, 8 and 12 were observed in all subgroups. The mean number of aberrations was higher in disseminated t(14;18)-positive Follicular Lymphoma compared to localized t(14:18)-positive Follicular Lymphoma (p<0.01) and the majority of alterations in localized t(14:18)-positive Follicular Lymphoma were also found in disseminated t(14;18)-positive Follicular Lymphoma. Nodal marginal zone lymphoma was marked by 3q gains with amplifications of four genes. A different overall pattern of aberrations was seen in t(14;18)-negative Follicular Lymphoma compared to t(14;18)-positive Follicular Lymphoma. t(14;18)-negative Follicular Lymphoma is marked by specific (focal) gains on chromosome 3 as observed in Nodal marginal zone lymphoma. Our results support the notion that localized t(14:18)-positive Follicular Lymphoma represents an early phase of disseminated t(14;18)-positive Follicular Lymphoma. t(14;18)-negative Follicular Lymphoma bears aberrations that are more alike Nodal marginal zone lymphoma, suggesting a relation between these groups.
Project description:Nodal marginal zone lymphoma is a poorly defined entity in the WHO classification, largely based on criteria by exclusion and the diagnosis often remains subjective. Follicular Lymphoma lacking t(14;18), have similar characteristics which results in a major potential diagnostic overlap which this study aims to dissect. Four subgroups of lymphoma samples (n=56) were analyzed with high-resolution arrayCGH; Nodal marginal zone lymphoma, t(14;18)-negative Follicular Lymphoma, localized t(14:18)-positive Follicular Lymphoma and disseminated t(14;18)-positive Follicular Lymphoma. Gains on chromosomes 7, 8 and 12 were observed in all subgroups. The mean number of aberrations was higher in disseminated t(14;18)-positive Follicular Lymphoma compared to localized t(14:18)-positive Follicular Lymphoma (p<0.01) and the majority of alterations in localized t(14:18)-positive Follicular Lymphoma were also found in disseminated t(14;18)-positive Follicular Lymphoma. Nodal marginal zone lymphoma was marked by 3q gains with amplifications of four genes. A different overall pattern of aberrations was seen in t(14;18)-negative Follicular Lymphoma compared to t(14;18)-positive Follicular Lymphoma. t(14;18)-negative Follicular Lymphoma is marked by specific (focal) gains on chromosome 3 as observed in Nodal marginal zone lymphoma. Our results support the notion that localized t(14:18)-positive Follicular Lymphoma represents an early phase of disseminated t(14;18)-positive Follicular Lymphoma. t(14;18)-negative Follicular Lymphoma bears aberrations that are more alike Nodal marginal zone lymphoma, suggesting a relation between these groups. Four subgroups of follicular lymphoma were analyzed: NMZL (n=14), t-FL (n=12), LOC t+FL (n=16), DIS t+FL (n=14).