Abstract
Purpose
Soft tissue sarcoma (STS) of the sella is exceptionally rare. We conducted a case series, literature review, and nationwide analysis of primary and iatrogenic (radiation-associated) STS of the sella to define the clinical course of this entity.
Methods
This study employed a multi-institutional retrospective case review, literature review, and nationwide analysis using the National Cancer Database (NCDB).
Results
We report five patients who were diagnosed at three institutions with malignant STS of the sella. All patients presented with symptoms related to mass effect in the sellar region. All tumors extended to the suprasellar space, with the majority displaying extension into the cavernous sinus. All patients underwent an operation via a transsphenoidal approach with a goal of maximal safe tumor resection in four patients and biopsy for 1 patient. Histopathologic evaluation demonstrated STS in all patients. Post-operative adjuvant radiotherapy and chemotherapy were given to 2 and 1 out of 4 patients with known post-operative clinical course, respectively. The 1-year and 5-year overall survival rates were 100% (5/5) and 25% (1/4). Twenty-two additional reports of primary, non-iatrogenic STS of the sella were identified in the literature. Including the three cases from our series, treatment included resection in all cases, and adjuvant radiotherapy and chemotherapy were utilized in 50% (12/24) and 17% (4/24) of cases, respectively. The national prevalence of malignant STS is estimated to be 0.01% among all pituitary and sellar tumors within the NCDB.
Conclusions
We report the prevalence and survival rates of STS of the sella. Multimodal therapy, including maximal safe resection, chemotherapy, and radiotherapy are necessary to optimize outcomes for this uncommon pathology.
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Funding
JBI acknowledges support from the NIH (5T32HL007627). J.D.B has positions and equity in CITC Ltd and Avidea Technologies and is on the Scientific Board of Advisors for POCKiT Diagnostics.
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SG, JBI, LBF, and TRS were responsible for the initial conceptualization of this manuscript. SG, JBI, SH, and LBF were responsible for chart review. SG, JBI, MC, JDB, MC, DJS, ERL, and TRS were responsible for data analysis and interpretation. SG, JDB, MC, DJS, and LBF were responsible for drafting the manuscript. JBI, MC, ERL, and TRS were responsible for critical review of the manuscript. All authors contributed to final review of the manuscript and approved it.
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This study was conducted under IRB approval. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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11102_2020_1062_MOESM1_ESM.tif
Supplementary Figure 1. Representative Histology of a Primary Unclassified Sarcoma of the Sella. Representative histology from a case of a primary unclassifed sarcoma of the sella (Case 4, hematoxylin and eosin 200× magnification) demonstrating poorly-differentiated spindle cell morphology with up to 21 mitoses per 10 HPF, but no further distinguishing histological features. Immunohistochemistry (negative for GFAP, OLIG2, desmin, chromogranin, SMA, CD34, pan-keratin, S100, and EMA), targeted sequencing (of 41 cancer-related genes), and karyotyping (no cytogenetic abnormalities) were additionally equivocal (TIF 13805 kb)
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Gupta, S., Iorgulescu, J.B., Hoffman, S. et al. The diagnosis and management of primary and iatrogenic soft tissue sarcomas of the sella. Pituitary 23, 558–572 (2020). https://doi.org/10.1007/s11102-020-01062-y
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DOI: https://doi.org/10.1007/s11102-020-01062-y