Malignant transformation of oral leukoplakia: Systematic review and meta‐analysis of the last 5 years

Objective Oral leukoplakia (OL) is the most frequently encountered oral potentially malignant disorder. The aims of this systematic review are to estimate the overall malignant transformation of OL and to assess the risk factors associated with malignant transformation of OL published in the last 5 ...

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Published inOral diseases Vol. 27; no. 8; pp. 1881 - 1895
Main Authors Aguirre‐Urizar, José M., Lafuente‐Ibáñez de Mendoza, Irene, Warnakulasuriya, Saman
Format Journal Article
LanguageEnglish
Published Denmark Wiley Subscription Services, Inc 01.11.2021
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Abstract Objective Oral leukoplakia (OL) is the most frequently encountered oral potentially malignant disorder. The aims of this systematic review are to estimate the overall malignant transformation of OL and to assess the risk factors associated with malignant transformation of OL published in the last 5 years (2015–2020). Materials and Methods We performed a bibliographic search in PubMed, Scopus, Web of Science, Embase, and Cochrane databases with keywords “oral leukoplakia”, “oral cancer”, “oral carcinoma” and “oral squamous cell carcinoma”. Meta‐analysis was conducted using a random‐effects model. Results Twenty‐four studies were selected, that reported a total of 16,604 patients. Malignant transformation proportion varied between 1.1% and 40.8%. Female gender, non‐homogeneous clinical type, and presence of epithelial dysplasia were significantly related to MT. Other risk factors previously suggested did not show significant results. Conclusions The pooled proportion of malignant transformation MT was 9.8% (95% CI: 7.9–11.7). It is necessary to continue to conduct well‐designed prospective clinicopathological studies on OL, using a uniform definition for OL to reduce the risk of bias for evaluating various factors associated with the MT.
AbstractList Objective Oral leukoplakia (OL) is the most frequently encountered oral potentially malignant disorder. The aims of this systematic review are to estimate the overall malignant transformation of OL and to assess the risk factors associated with malignant transformation of OL published in the last 5 years (2015–2020). Materials and Methods We performed a bibliographic search in PubMed, Scopus, Web of Science, Embase, and Cochrane databases with keywords “oral leukoplakia”, “oral cancer”, “oral carcinoma” and “oral squamous cell carcinoma”. Meta‐analysis was conducted using a random‐effects model. Results Twenty‐four studies were selected, that reported a total of 16,604 patients. Malignant transformation proportion varied between 1.1% and 40.8%. Female gender, non‐homogeneous clinical type, and presence of epithelial dysplasia were significantly related to MT. Other risk factors previously suggested did not show significant results. Conclusions The pooled proportion of malignant transformation MT was 9.8% (95% CI: 7.9–11.7). It is necessary to continue to conduct well‐designed prospective clinicopathological studies on OL, using a uniform definition for OL to reduce the risk of bias for evaluating various factors associated with the MT.
Oral leukoplakia (OL) is the most frequently encountered oral potentially malignant disorder. The aims of this systematic review are to estimate the overall malignant transformation of OL and to assess the risk factors associated with malignant transformation of OL published in the last 5 years (2015-2020). We performed a bibliographic search in PubMed, Scopus, Web of Science, Embase, and Cochrane databases with keywords "oral leukoplakia", "oral cancer", "oral carcinoma" and "oral squamous cell carcinoma". Meta-analysis was conducted using a random-effects model. Twenty-four studies were selected, that reported a total of 16,604 patients. Malignant transformation proportion varied between 1.1% and 40.8%. Female gender, non-homogeneous clinical type, and presence of epithelial dysplasia were significantly related to MT. Other risk factors previously suggested did not show significant results. The pooled proportion of malignant transformation MT was 9.8% (95% CI: 7.9-11.7). It is necessary to continue to conduct well-designed prospective clinicopathological studies on OL, using a uniform definition for OL to reduce the risk of bias for evaluating various factors associated with the MT.
Oral leukoplakia (OL) is the most frequently encountered oral potentially malignant disorder. The aims of this systematic review are to estimate the overall malignant transformation of OL and to assess the risk factors associated with malignant transformation of OL published in the last 5 years (2015-2020).OBJECTIVEOral leukoplakia (OL) is the most frequently encountered oral potentially malignant disorder. The aims of this systematic review are to estimate the overall malignant transformation of OL and to assess the risk factors associated with malignant transformation of OL published in the last 5 years (2015-2020).We performed a bibliographic search in PubMed, Scopus, Web of Science, Embase, and Cochrane databases with keywords "oral leukoplakia", "oral cancer", "oral carcinoma" and "oral squamous cell carcinoma". Meta-analysis was conducted using a random-effects model.MATERIALS AND METHODSWe performed a bibliographic search in PubMed, Scopus, Web of Science, Embase, and Cochrane databases with keywords "oral leukoplakia", "oral cancer", "oral carcinoma" and "oral squamous cell carcinoma". Meta-analysis was conducted using a random-effects model.Twenty-four studies were selected, that reported a total of 16,604 patients. Malignant transformation proportion varied between 1.1% and 40.8%. Female gender, non-homogeneous clinical type, and presence of epithelial dysplasia were significantly related to MT. Other risk factors previously suggested did not show significant results.RESULTSTwenty-four studies were selected, that reported a total of 16,604 patients. Malignant transformation proportion varied between 1.1% and 40.8%. Female gender, non-homogeneous clinical type, and presence of epithelial dysplasia were significantly related to MT. Other risk factors previously suggested did not show significant results.The pooled proportion of malignant transformation MT was 9.8% (95% CI: 7.9-11.7). It is necessary to continue to conduct well-designed prospective clinicopathological studies on OL, using a uniform definition for OL to reduce the risk of bias for evaluating various factors associated with the MT.CONCLUSIONSThe pooled proportion of malignant transformation MT was 9.8% (95% CI: 7.9-11.7). It is necessary to continue to conduct well-designed prospective clinicopathological studies on OL, using a uniform definition for OL to reduce the risk of bias for evaluating various factors associated with the MT.
ObjectiveOral leukoplakia (OL) is the most frequently encountered oral potentially malignant disorder. The aims of this systematic review are to estimate the overall malignant transformation of OL and to assess the risk factors associated with malignant transformation of OL published in the last 5 years (2015–2020).Materials and MethodsWe performed a bibliographic search in PubMed, Scopus, Web of Science, Embase, and Cochrane databases with keywords “oral leukoplakia”, “oral cancer”, “oral carcinoma” and “oral squamous cell carcinoma”. Meta‐analysis was conducted using a random‐effects model.ResultsTwenty‐four studies were selected, that reported a total of 16,604 patients. Malignant transformation proportion varied between 1.1% and 40.8%. Female gender, non‐homogeneous clinical type, and presence of epithelial dysplasia were significantly related to MT. Other risk factors previously suggested did not show significant results.ConclusionsThe pooled proportion of malignant transformation MT was 9.8% (95% CI: 7.9–11.7). It is necessary to continue to conduct well‐designed prospective clinicopathological studies on OL, using a uniform definition for OL to reduce the risk of bias for evaluating various factors associated with the MT.
Author Lafuente‐Ibáñez de Mendoza, Irene
Warnakulasuriya, Saman
Aguirre‐Urizar, José M.
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  orcidid: 0000-0002-2652-0755
  surname: Aguirre‐Urizar
  fullname: Aguirre‐Urizar, José M.
  email: josemanuel.aguirre@ehu.eus
  organization: University of the Basque Country/EHU
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  givenname: Irene
  orcidid: 0000-0001-7704-4122
  surname: Lafuente‐Ibáñez de Mendoza
  fullname: Lafuente‐Ibáñez de Mendoza, Irene
  organization: University of the Basque Country/EHU
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  givenname: Saman
  orcidid: 0000-0003-2103-0746
  surname: Warnakulasuriya
  fullname: Warnakulasuriya, Saman
  organization: King’s College London and WHO Collaborating Centre for Oral Cancer
BackLink https://www.ncbi.nlm.nih.gov/pubmed/33606345$$D View this record in MEDLINE/PubMed
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oral leukoplakia
risk
malignant transformation
systematic review
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Snippet Objective Oral leukoplakia (OL) is the most frequently encountered oral potentially malignant disorder. The aims of this systematic review are to estimate the...
Oral leukoplakia (OL) is the most frequently encountered oral potentially malignant disorder. The aims of this systematic review are to estimate the overall...
ObjectiveOral leukoplakia (OL) is the most frequently encountered oral potentially malignant disorder. The aims of this systematic review are to estimate the...
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SubjectTerms Carcinoma, Squamous Cell
Cell Transformation, Neoplastic
Dysplasia
Female
Humans
Leukokeratosis
Leukoplakia, Oral
malignant transformation
Meta-analysis
Mouth Neoplasms
Oral cancer
Oral carcinoma
oral leukoplakia
Oral squamous cell carcinoma
Prospective Studies
risk
Risk factors
Squamous cell carcinoma
Systematic review
Title Malignant transformation of oral leukoplakia: Systematic review and meta‐analysis of the last 5 years
URI https://onlinelibrary.wiley.com/doi/abs/10.1111%2Fodi.13810
https://www.ncbi.nlm.nih.gov/pubmed/33606345
https://www.proquest.com/docview/2586545904
https://www.proquest.com/docview/2491947115
Volume 27
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