Abstract
There is a paucity of literature reporting the outcome of intracranial sarcomas (IS) in children, adolescents, and young adults (CAYA). A multimodal therapeutic approach is commonly used, with no well-established treatment consensus. We conducted a retrospective review of CAYA with IS, treated at our institution, to determine their clinical findings, treatments, and outcomes. Immunohistochemistry (PDGFRA and EGFR) and DNA sequencing were performed on 5 tumor samples. A literature review of IS was also conducted. We reviewed 13 patients (median age, 7 years) with a primary diagnosis of IS between 1990 and 2015. Diagnoses included unclassified sarcoma (n = 9), chondrosarcoma (n = 2), and rhabdomyosarcoma (n = 2). Five patients underwent upfront gross total resection (GTR) of the tumor. The 5-drug regimen (vincristine, doxorubicin, cyclophosphamide, etoposide, and ifosfamide) was the most common treatment used. Nine patients died due to progression or recurrence (n = 8) or secondary malignancy (n = 1). The median follow-up period of the 4 surviving patients was 1.69 years (range 1.44–5.17 years). The 5-year progression-free survival and overall survival rates were 21 and 44 %, respectively. BRAF, TP53, KRAS, KIT, ERBB2, MET, RET, ATM, and EGFR mutations were detected in 4 of the 5 tissue samples. All 5 samples were immunopositive for PDGFRA, and only 2 were positive for EGFR. IS remain a therapeutic challenge due to high progression and recurrence rates. Collaborative multi-institutional studies are warranted to delineate a treatment consensus and investigate tumor biology to improve the disease outcome.
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Acknowledgments
We appreciate Dr. Adriana Olar’s help with the pathology review. She is currently supported by NIH/NCI training grant no. 5T32CA163185. Dr. Ossama Maher is also currently affiliated with the National Cancer Institute, Cairo University, Cairo, Egypt.
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11060_2015_2027_MOESM1_ESM.tif
Supplementary Figure 1 Axial T1-weighted post-contrast image (A) from patient #9 shows a falx-based, homogeneously enhancing mass involving the adjacent brain, with falx thickening and a falx tail (arrows). Coronal T2-weighted image (B) from patient #11 shows a dura-based tumor in the skull base (arrow) with a large surrounding hematoma (dark area). Axial T1-weighted postcontrast image (C) from patient #13, obtained at initial diagnosis, shows an enhancing dura-based mass in the right temporal area with dural thickening and enhancement that was suspicious for vascular malformation. Axial T-weighted image (D) of the same patient 6 weeks later shows an enhancing dura-based tumor with intratumoral bleeding and fluid-fluid levels in the enlarged tumor. Supplementary material 1 (TIFF 395 kb)
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Maher, O.M., Khatua, S., Mukherjee, D. et al. Primary intracranial soft tissue sarcomas in children, adolescents, and young adults: single institution experience and review of the literature. J Neurooncol 127, 155–163 (2016). https://doi.org/10.1007/s11060-015-2027-3
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DOI: https://doi.org/10.1007/s11060-015-2027-3