Evidence map›Paper›PMID 22607730›Full record

ArticleHead & neck oncology2012

Definitive radiotherapy for early stage glottic cancer by 6 MV photons.

Chi-Chung Tong, Kwok-Hung Au, Roger Kai-Cheong Ngan, Foon-Yiu Cheung, Sin-Ming Chow, Yiu-Tung Fu, Joseph Siu-Kei Au, Stephen Chun-Key Law

Expression of concernAbstract read
In one paragraph

Article in Head & neck oncology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It carries an expression of concern. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

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

  1. Therapeutic modalities and oncologic outcomes in the treatment of T1b glottic squamous cell carcinoma: a systematic review.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2017
    Pooled it
  2. The outcome of early-stage glottic carcinoma patients treated with radiotherapy: Egyptian National Cancer Institute (NCI-Egypt) experience.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2023
    Article
  3. Prospective Observational Comparative Study of Response and Toxicities in Early Glottic Cancer Using Telecobalt Versus 3D-CRT.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Chi-Chung TongDepartment of Clinical Oncology, Queen Elizabeth Hospital, 30 Gascoigne Road, Kowloon, Hong Kong, China. chichungtong@hkcr.org
Kwok-Hung Au
Roger Kai-Cheong Ngan
Foon-Yiu Cheung
Sin-Ming Chow
Yiu-Tung Fu
Joseph Siu-Kei Au
Stephen Chun-Key Law

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the clinical outcome of early glottic cancer (GC) treated by primary radiotherapy (RT) with 6 MV photons. METHODS AND MATERIALS: We retrospectively reviewed the medical records of 695 consecutive patients with T1N0 and T2N0 GC treated between 1983 and 2005 by RT in our institution. Clinical outcome in terms of local control (LC), overall survival (OS) and cause- specific survival (CSS) rate were evaluated.

resultsThe median follow-up time was 10.5 years. The 10-year actuarial LC rates were as follows: T1A, 91%; T1B, 87%; T2, 77%. The 10-year OS were as follows: T1, 74.2%; T2, 70.7%. The 10-year CSS were as follows: T1, 97.7%; T2, 97.1%.Poorly differentiated histology and tumor biologically effective dose<65 Gy15 were adverse factors in both LC of T1 and T2 disease. Involvement of anterior commissure was an adverse factor in both LC and CSS of T1 disease. Subglottic extension was associated with poor LC in T2 disease whereas hemoglobin <13.0 was associated with poor LC and CSS of T2 disease.

conclusionPrimary RT remains an option among the various standard treatments for early GC. Clinical treatment outcome by 6MV photons is similar and comparable to historic data of Cobalt-60 and 2 MV photons.

Indexed as

AdultAgedAged, 80 and overDose Fractionation, RadiationFemaleHumansMaleMiddle AgedNeoplasm StagingPhotonsRetrospective StudiesSurvival RateTongue NeoplasmsTreatment Outcome

Identifiers

PMID22607730
PMCPMC3448507

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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.