Evidence map›Paper›PMID 29714075›Full record

ArticleDento maxillo facial radiology2018

Prevalence and imaging characteristics of nasopharyngeal and eustachian tube tonsilloliths in 2244 patients determined using computed tomography.

Akira Takahashi, Chieko Sugawara, Kazuya Akita, Kumiko Kamada, Keiko Kudoh, Tetsuya Tamatani, Youji Miyamoto

Open access · greenAbstract read
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In one paragraph

Article in Dento maxillo facial radiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
0.8field-weighted citation impact, top 27% 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

0 citing papers in PubMed, 7 citations in OpenAlex.

No citing paper in PubMed yet.

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

7 authors at 1 institution in 1 country.

Akira Takahashi1 Department of Oral Surgery, Oral Sciences, Clinical Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan.
Chieko Sugawara2 Department of Oral Surgery, Tokushima Prefectural Central Hospital , Tokushima , Japan.
Kazuya Akita1 Department of Oral Surgery, Oral Sciences, Clinical Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan.
Kumiko Kamada1 Department of Oral Surgery, Oral Sciences, Clinical Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan.
Keiko Kudoh1 Department of Oral Surgery, Oral Sciences, Clinical Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan.
Tetsuya Tamatani1 Department of Oral Surgery, Oral Sciences, Clinical Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan.
Youji Miyamoto1 Department of Oral Surgery, Oral Sciences, Clinical Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan.
Tokushima University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectives: Nasopharyngeal tonsilloliths (NT) and eustachian tube tonsilloliths (ET) are not as well-known to radiologists as palatine and lingual tonsilloliths. The aim of this investigation was to determine the prevalence and imaging characteristics of NT and ET using CT and panoramic radiographs.

methods: We retrospectively assessed the scans of 2244 patients who underwent consecutive CT and panoramic radiographs of the maxillofacial region. The prevalence, size, number, and position of NT and ET were analysed.

results: NT and ET were detected in 14 (0.6%) and 6 (0.3%) of 2244 patients on CT, respectively, but they were undetectable on panoramic radiographs. No significant difference was found in the prevalence with respect to sex. Although there was also no significant difference in the prevalence among age groups, tonsilloliths were most commonly noted in patients over 40 years old; they appeared as small and round calcified bodies, ranging from 1 to  3 mm in diameter. All NT were found 0 to 3 mm beneath the nasopharyngeal mucosal surface.

conclusions: The prevalence of NT and ET on CT was lower than that of palatine and lingual tonsilloliths. However, since they are encountered more frequently than clinically significant calcifying diseases such as retropharyngeal calcific tendinitis, clinicians should be able to correctly diagnose NT and ET based on their anatomical features.

Indexed as

Eustachian TubeLithiasisPharyngeal DiseasesAdultFemaleHumansMalePrevalenceRetrospective StudiesTomography, X-Ray Computed

Identifiers

PMID29714075
PMCPMC6196070
OpenAlexW2799992078

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.