Evidence map›Paper›PMID 18704401›Full record

Trial reportEuropean journal of nuclear medicine and molecular imaging2009

Staging of untreated nasopharyngeal carcinoma with PET/CT: comparison with conventional imaging work-up.

Shu-Hang Ng, Sheng-Chieh Chan, Tzu-Chen Yen, Joseph Tung-Chieh Chang, Chun-Ta Liao, Sheung-Fat Ko, Feng-Yuan Liu, Shu-Chyn Chin, Kang-Hsing Fan, Cheng-Lung Hsu

Erratum issuedAbstract readClinical TrialComparative Study
PubMed Publisher
In one paragraph

Trial report in European journal of nuclear medicine and molecular imaging, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 60 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 4 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

60 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Comparison of [Molecular imaging and biology · 2024
    Trial
  6. Trial
  7. Trial
  8. Robustness of Radiomic Features in [Molecular imaging and biology · 2016
    Trial
  9. Trial
  10. PET/CT for staging and follow-up of pediatric nasopharyngeal carcinoma.European journal of nuclear medicine and molecular imaging · 2012
    Trial
  11. Trial
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Head and neck MRI-based T stage and [European radiology · 2023
    Article
  20. Nasopharyngeal carcinoma. A "different" head and neck tumour. Part A: from histology to staging.Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale · 2023
    Review
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

10 authors.

Shu-Hang NgMolecular Imaging Center and Department of Diagnostic Radiology, Chang Gung Memorial Hospital, Chang Gung University, Kueishan, Taiwan. Shng6@ms25.hinet.net
Sheng-Chieh Chan
Tzu-Chen Yen
Joseph Tung-Chieh Chang
Chun-Ta Liao
Sheung-Fat Ko
Feng-Yuan Liu
Shu-Chyn Chin
Kang-Hsing Fan
Cheng-Lung Hsu

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe prospectively compared PET/CT and conventional imaging for initial staging of nasopharyngeal carcinoma (NPC).

methodsA total of 111 patients with histologically proven NPC were investigated with PET/CT and conventional imaging (head-and-neck MRI, chest X-ray, abdominal ultrasound, and bone scan) before treatment. The respective findings were reviewed independently and then compared with each other.

resultsWith regard to T staging, PET/CT showed a discrepancy with head-and-neck MRI in 36 (32.4%) of the study subjects. With regard to N staging, PET/CT showed a discrepancy with head-and-neck MRI in 15 (13.5%) patients. Among the discordant cases, MRI was superior in demonstrating tumor involvement in the parapharyngeal space, skull base, intracranial area, sphenoid sinus, and retropharyngeal nodes while PET/CT was superior in demonstrating neck nodal metastasis. PET/CT disclosed 13 of 16 patients with distant malignancy compared with four patients disclosed by conventional imaging work-up. The false-positive rate of PET/CT was 18.8%. PET/CT correctly modified M staging in eight patients (7.2%) and disclosed a second primary lung malignancy in one patient (0.9%).

conclusionIn NPC patients, MRI appears to be superior to PET/CT for the assessment of locoregional invasion and retropharyngeal nodal metastasis. PET/CT is more accurate than MRI for determining cervical nodal metastasis and should be the better reference for the neck status. PET/CT has an acceptable diagnostic yield and a low false-positive rate for the detection of distant malignancy and can replace conventional work-up to this aim. PET/CT and head-and-neck MRI are suggested for the initial staging of NPC patients.

Indexed as

AdultAgedAged, 80 and overFemaleHumansLymphatic MetastasisMagnetic Resonance ImagingMaleMiddle AgedNasopharyngeal NeoplasmsNeoplasm StagingPositron-Emission TomographyTomography, X-Ray ComputedUltrasonography

Identifiers

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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.