Evidence map›Paper›PMID 39687058›Full record

ArticleNorth American Spine Society journal2024

Surgical management of skull base and spinal chordomas: A case series with comprehensive review of the literature.

Sarah Lee, Nahom Teferi, Juan Vivanco-Suarez, Ajmain Chowdhury, Stephen Glennon, Kyle Kato, Tyson Matern, Kathryn L Eschbacher, Michael Petronek, Patrick Hitchon

Abstract read
In one paragraph

Article in North American Spine Society journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Sarah LeeDepartment of Neurosurgery, University of Iowa Carver, College of Medicine, Iowa City, IA, United States.
Nahom TeferiDepartment of Neurosurgery, University of Iowa Carver, College of Medicine, Iowa City, IA, United States.
Juan Vivanco-SuarezDepartment of Neurosurgery, University of Iowa Carver, College of Medicine, Iowa City, IA, United States.
Ajmain ChowdhuryUniversity of Iowa Carver, College of Medicine, Iowa City, IA, United States.
Stephen GlennonDepartment of Neurosurgery, University of Iowa Carver, College of Medicine, Iowa City, IA, United States.
Kyle KatoUniversity of Iowa Carver, College of Medicine, Iowa City, IA, United States.
Tyson MaternDepartment of Neurosurgery, University of Iowa Carver, College of Medicine, Iowa City, IA, United States.
Kathryn L EschbacherDepartment of Pathology, University of Iowa Carver, College of Medicine, Iowa City, IA, United States.
Michael PetronekDepartment of Radiation Oncology, University of Iowa Carver, College of Medicine, Iowa City, IA, United States.
Patrick HitchonDepartment of Neurosurgery, University of Iowa Carver, College of Medicine, Iowa City, IA, United States.

Funding

The University of Iowa Clinical and Translational Science AwardUL1TR002537 · NCATS · UNIVERSITY OF IOWA · PI HANSEN, MARLAN R, WINOKUR, PATRICIA · 2018 to 2022
$20.0M
NCATS NIH HHS UL1 TR002537
6 · The paper itself

Abstract

Background: Chordomas are rare, slow growing, locally aggressive malignant bone tumors that arise from remnants of the embryonic notochord with variable presenting symptoms depending on tumor location. Methods: All patients with craniospinal chordoma managed at our institution between 1982 and 2023 were retrospectively reviewed. Demographics, tumor characteristics, clinical course and treatment, and long-term neurological and survival outcomes were collected. Adjuvant radiotherapy (RT) was stratified into standard dose fractionated radiotherapy (standard XRT) for doses of 50 to 60 Gy at 1.8 Gy fractions or high dose hyperfractionated stereotactic radiotherapy (HD-FSRT) for doses of 60 to 81 Gy at 1.2-1.5 Gy fractions per treatment. Descriptive statistics, univariate analysis, Log-rank test, and Kaplan-Meier survival analysis were performed. Results: A total of 37 patients were included in our cohort (mean age 46.0 ± 20.8 years; 22 male). Clival chordomas accounted for the majority of patients (56.8%), followed by vertebral (27%) and sacral (10.8%) chordomas. Thirty-five patients (94.6%) underwent gross total resection (GTR) or subtotal resection (STR), and 2 patients underwent excisional biopsy only. Postoperatively, functional status trended towards improvement (KPS: Preop- 80 [range 40-100] vs. Post op- 90 [60-100], p = .0911) and all patients either maintained or improved their neurological function. Median overall survival (OS) after diagnosis was 16.5 years. Age < 65, clival tumor location, post-operative Frankel grade E, and administration of adjuvant RT following initial STR significantly improved OS. OS of GTR patients was not significantly affected by adjuvant RT treatment. Conclusions: Our results show the best long-term survival outcomes for chordoma patients undergoing GTR of tumor tissue. Higher postoperative neurological function was significantly associated with OS, highlighting the importance of maximal but safe total tumor resection. Moreover, adjuvant RT improved long-term survival for patients that underwent STR but had no effect on survival outcomes for patients that underwent GTR.

Indexed as

ChordomaClivalProton beam therapyRadiotherapySacralSpinal

Identifiers

PMID39687058
PMCPMC11648787

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.