Evidence map›Paper›PMID 27815039›Full record

SynthesisClinical oncology (Royal College of Radiologists (Great Britain))2017

Standardisation of Target Volume Delineation for Carotid-sparing Intensity-modulated Radiotherapy in Early Glottis Cancer.

D M Gujral, M Long, J W G Roe, K J Harrington, C M Nutting

Abstract readSystematic Review
In one paragraph

Synthesis in Clinical oncology (Royal College of Radiologists (Great Britain)), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 18% of its field
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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Pooled it
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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

5 authors at 2 institutions in 1 country.

D M GujralHead and Neck Unit, The Royal Marsden Hospital, London, UK.
M LongDepartment of Physics, Royal Marsden Hospital, London, UK.
J W G RoeSpeech and Language Therapy Department, Royal Marsden Hospital, London, UK.
K J HarringtonHead and Neck Unit, The Royal Marsden Hospital, London, UK; Division of Radiotherapy and Imaging, The Institute of Cancer Research, London, UK.
C M NuttingHead and Neck Unit, The Royal Marsden Hospital, London, UK; Division of Radiotherapy and Imaging, The Institute of Cancer Research, London, UK. Electronic address: chris.nutting@rmh.nhs.uk.
Royal Marsden Hospital · GBInstitute of Cancer Research · GB

Funding

Cancer Research UK 13407Cancer Research UK C7224/A13407
6 · The paper itself

Abstract

aimsRecently, carotid-sparing intensity-modulated radiotherapy (IMRT) for early laryngeal glottis (T1/T2N0M0) cancer has generated interest in the hope of avoiding long-term carotid toxicity, as well as concerns relating to geographical misses and long-term normal tissue toxicity. The aim of this review was to summarise the current literature on carotid-sparing IMRT for early glottis cancer, with particular focus on definitions of target volumes and the carotid arteries as organs at risk. In addition, we make suggestions for standardisation of these structures, dose constraints and dose reporting. MATERIALS AND

methodsFrom 73 references, 16 articles met the criteria for inclusion in this systematic review. These papers described two case reports, 11 planning studies and three prospective studies.

resultsThere was variation in all target volume definitions with no clear consensus. The greatest variability was in clinical target volume definition. Carotid artery and spinal cord delineation were not always defined and most studies did not use a carotid artery constraint. Of the eight studies that reported carotid artery delineation, no two studies delineated the same length of carotid artery, yet most studies reported mean doses. Most studies used IMRT with three to seven fields. Five studies used arc therapy and two studies used tomotherapy.

conclusionThis review highlights a lack of consensus in target volume definitions in carotid-sparing IMRT. Ultimately, long-term prospective data are required to show the benefit of carotid-sparing IMRT. Pooled data will prove useful as most studies will report on small numbers of patients. Therefore, adopting a consensus now on target volume definition, dose constraints and dose reporting will be crucial.

Indexed as

Carotid ArteriesGlottisHumansLaryngeal NeoplasmsMaleProspective StudiesRadiotherapy, ConformalRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedCarotid sparingglottic cancerradiotherapy

Identifiers

PMID27815039
PMCPMC6155494
OpenAlexW2546580547

What OpenQuestion holds

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Registered trials

None linked

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.