Abstract
Differentiation was studied in 73 paediatric peripheral primitive neurorectodermal tumours (pPNETs) of bone observed during 1974 through 1992. The presence of rosettes, pseudorosettes, and/or a rosette-like arrangement of tumour cells (the morphological neural marker, MNM) occurred in 29% of these cases. NSE and N-CAM were expressed by nearly all tumours; synaptophysin was present in 30% of cases, not significantly associated with the MNM status. Neuroendocrine (NE) markers were present in 25% (chromogranin B, secretogranin II) to 40% (chromogranin A, 7B2 protein) of cases. Focal expression of cytokeratins, S100 protein and/or desmin was also noted in a minority of cases. In univariate statistical analysis, only the presence of MNM conferred a significantly higher (about twofold) risk of death than its absence. This study demonstrates the occurrence of at least one immunocytochemical N and/or NE differentiation marker in all pPNETs of bone and a focal expression of cytokeratins, S100 protein and/or desmin in a minority of cases. Synaptophysin and MNM were present each in less than 1/3 of the cases, and no association was noted between them. Statistical analyses highlighted the prognostic role of MNM per se and discourage the sole use of immunocytochemistry in the assessment of neuroectodermal differentiation for prognostic purposes in paediatric pPNETs of bone.
| Original language | English |
|---|---|
| Pages (from-to) | 505-513 |
| Number of pages | 9 |
| Journal | Virchows Archiv |
| Volume | 432 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1998 |
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Keywords
- Differentiation
- Immunocytochemistry
- Peripheral primitive neuroectodermal tumour
- Statistical analysis
- Survival
ASJC Scopus subject areas
- Pathology and Forensic Medicine
Cite this
Differentiation in paediatric peripheral primitive neuroectodermal tumours of bone. A critical contribution to its assessment. / Collini, Paola; Sampietro, Giuseppe; Luksch, Roberto; Migliorini, Luca; Boracchi, Patrizia; Scopsi, Lucio.
In: Virchows Archiv, Vol. 432, No. 6, 1998, p. 505-513.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Differentiation in paediatric peripheral primitive neuroectodermal tumours of bone. A critical contribution to its assessment
AU - Collini, Paola
AU - Sampietro, Giuseppe
AU - Luksch, Roberto
AU - Migliorini, Luca
AU - Boracchi, Patrizia
AU - Scopsi, Lucio
PY - 1998
Y1 - 1998
N2 - Differentiation was studied in 73 paediatric peripheral primitive neurorectodermal tumours (pPNETs) of bone observed during 1974 through 1992. The presence of rosettes, pseudorosettes, and/or a rosette-like arrangement of tumour cells (the morphological neural marker, MNM) occurred in 29% of these cases. NSE and N-CAM were expressed by nearly all tumours; synaptophysin was present in 30% of cases, not significantly associated with the MNM status. Neuroendocrine (NE) markers were present in 25% (chromogranin B, secretogranin II) to 40% (chromogranin A, 7B2 protein) of cases. Focal expression of cytokeratins, S100 protein and/or desmin was also noted in a minority of cases. In univariate statistical analysis, only the presence of MNM conferred a significantly higher (about twofold) risk of death than its absence. This study demonstrates the occurrence of at least one immunocytochemical N and/or NE differentiation marker in all pPNETs of bone and a focal expression of cytokeratins, S100 protein and/or desmin in a minority of cases. Synaptophysin and MNM were present each in less than 1/3 of the cases, and no association was noted between them. Statistical analyses highlighted the prognostic role of MNM per se and discourage the sole use of immunocytochemistry in the assessment of neuroectodermal differentiation for prognostic purposes in paediatric pPNETs of bone.
AB - Differentiation was studied in 73 paediatric peripheral primitive neurorectodermal tumours (pPNETs) of bone observed during 1974 through 1992. The presence of rosettes, pseudorosettes, and/or a rosette-like arrangement of tumour cells (the morphological neural marker, MNM) occurred in 29% of these cases. NSE and N-CAM were expressed by nearly all tumours; synaptophysin was present in 30% of cases, not significantly associated with the MNM status. Neuroendocrine (NE) markers were present in 25% (chromogranin B, secretogranin II) to 40% (chromogranin A, 7B2 protein) of cases. Focal expression of cytokeratins, S100 protein and/or desmin was also noted in a minority of cases. In univariate statistical analysis, only the presence of MNM conferred a significantly higher (about twofold) risk of death than its absence. This study demonstrates the occurrence of at least one immunocytochemical N and/or NE differentiation marker in all pPNETs of bone and a focal expression of cytokeratins, S100 protein and/or desmin in a minority of cases. Synaptophysin and MNM were present each in less than 1/3 of the cases, and no association was noted between them. Statistical analyses highlighted the prognostic role of MNM per se and discourage the sole use of immunocytochemistry in the assessment of neuroectodermal differentiation for prognostic purposes in paediatric pPNETs of bone.
KW - Differentiation
KW - Immunocytochemistry
KW - Peripheral primitive neuroectodermal tumour
KW - Statistical analysis
KW - Survival
UR - http://www.scopus.com/inward/record.url?scp=0031861956&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031861956&partnerID=8YFLogxK
U2 - 10.1007/s004280050198
DO - 10.1007/s004280050198
M3 - Article
C2 - 9672191
AN - SCOPUS:0031861956
VL - 432
SP - 505
EP - 513
JO - Virchows Archiv - A Pathological Anatomy and Histopathology
JF - Virchows Archiv - A Pathological Anatomy and Histopathology
SN - 0945-6317
IS - 6
ER -