Unknown

Dataset Information

0

Pathological prognostic markers in central nervous system solitary fibrous tumour/hemangiopericytoma: Evidence from a small series.


ABSTRACT: BACKGROUND:Primary central nervous system (CNS) solitary fibrous tumour/hemangiopericytoma (SFT/HPC) is a rare neoplasm and its classification criteria have been redefined by the latest WHO Classification of CNS Tumours. Outcome can vary significantly among patients, thus reliable prognostic markers are warranted. METHODS:Primary CNS SFT/HPC diagnosed at the Pathology Unit of our Institution between 2006 and 2016 were retrospectively collected. Tumour grade along with immunohistochemistry for Ki67, STAT6, PHH3, CD34 and Bcl-2 were assessed. TERT promoter status was evaluated by Sanger sequencing. RESULTS:Fifteen SFT/HPC were analysed: 9/15 (60%) female, median age at diagnosis 60 (range: 10-67). Six (40%) cases showed a SFT phenotype and mean H&E-mitotic count was 4.8/10 HPF. Tumour grade was I in 6, II in 4 and III in 5 cases. Mean PHH3-mitotic count was higher than H&E count (8.4 versus 4.8/10 HPF), but it would have determined a change in tumour grade in a sole case. Nuclear staining for STAT6 was present in 14/15 (93.3%). CD34 and Bcl-2 expression rates were lower in higher grade tumours. TERT promoter was mutated in two cases. Median follow up time was 2.4 years (6 months-7.4 years) and 5/15 (33%) patients developed local disease recurrence. Partial resection (p = 0.0185), higher WHO grade (p = 0.038), lower CD34 (p = 0.038) and Bcl-2 (p = 0.010) expressions were significantly associated with a poorer disease-free interval. CONCLUSIONS:WHO grade is the main prognostic tool in CNS SFT/HPC, but it could be integrated by other markers, like CD34 and Bcl-2, in the clinical practice. The relevance of TERT promoter mutations in this subset of CNS tumours needs further evaluation.

SUBMITTER: Bertero L 

PROVIDER: S-EPMC6124774 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

altmetric image

Publications

Pathological prognostic markers in central nervous system solitary fibrous tumour/hemangiopericytoma: Evidence from a small series.

Bertero Luca L   Anfossi Vittorio V   Osella-Abate Simona S   Disanto Maria Giulia MG   Mantovani Cristina C   Zenga Francesco F   Rudà Roberta R   Garbossa Diego D   Soffietti Riccardo R   Ricardi Umberto U   Papotti Mauro M   Cassoni Paola P  

PloS one 20180905 9


<h4>Background</h4>Primary central nervous system (CNS) solitary fibrous tumour/hemangiopericytoma (SFT/HPC) is a rare neoplasm and its classification criteria have been redefined by the latest WHO Classification of CNS Tumours. Outcome can vary significantly among patients, thus reliable prognostic markers are warranted.<h4>Methods</h4>Primary CNS SFT/HPC diagnosed at the Pathology Unit of our Institution between 2006 and 2016 were retrospectively collected. Tumour grade along with immunohistoc  ...[more]

Similar Datasets

| S-EPMC9913704 | biostudies-literature
| S-EPMC9327149 | biostudies-literature
| S-EPMC4899415 | biostudies-literature
| S-EPMC9304060 | biostudies-literature
| S-EPMC7962064 | biostudies-literature
| S-EPMC10140206 | biostudies-literature
| S-EPMC9853498 | biostudies-literature
| S-EPMC7220372 | biostudies-literature
| S-EPMC8756112 | biostudies-literature
| S-EPMC6513906 | biostudies-literature