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Nguyen TPA, Gautam S, Mahato S, Jensen OC, Haghighian-Roudsari A, Baygi F. Overview of oral health status and associated risk factors in maritime settings: An updated systematic review. PLoS One 2023; 18:e0293118. [PMID: 37851694 PMCID: PMC10584167 DOI: 10.1371/journal.pone.0293118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 10/05/2023] [Indexed: 10/20/2023] Open
Abstract
OBJECTIVES The aim of this study is to provide an updated overview of the oral health status and associated risk factors in maritime settings. METHODS We systematically searched PubMed, Ovid Embase, Web of Science, CINAHL and SCOPUS from January 2010 to April 2023. Two independent reviewers extracted the data. The quality of included studies was assessed using relevant assessment tools. RESULTS A total of 260 records were found in the initial search; 24 articles met the inclusion criteria. Most studies had descriptive design, and only two randomized controlled trials were found. The main oral health issues noted are oral cancer, dental caries, periodontal diseases, oral mucosal lesions, and dental emergency. Male seafarers have higher risk of oral cancers in the tongue, lips, and oral cavity while oral mucosal lesions are more prevalent among fishermen. CONCLUSIONS Dental caries and periodontal diseases are prevalent in both seafarers and fishermen. The consumption of tobacco, alcohol, fermentable carbohydrate, and poor oral hygiene are risk factors that affect the oral health status at sea. The occurrence of oral diseases in maritime setting requires more attention of researchers and authorities to develop strategies to tackle these issues. TRIAL REGISTRATION Systematic review registration number in PROSPERO: CRD42020168692.
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Affiliation(s)
- Tuan P. A. Nguyen
- DeGroote School of Business, McMaster University, Hamilton, Ontario, Canada
- Faculty of Health Science, Department of Public Health, University of Southern Denmark, Esbjerg, Denmark
| | | | - Sweta Mahato
- Faculty of Health Science, Department of Public Health, University of Southern Denmark, Esbjerg, Denmark
| | - Olaf Chresten Jensen
- Center of Maritime Health and Society, Department of Public Health, University of Southern Denmark, Esbjerg, Denmark
| | - Arezoo Haghighian-Roudsari
- Faculty of Nutrition Science and Food Technology, Department of Community Nutrition, Department of Food and Nutrition Policy and Planning Research, National Nutrition and Food Technology Research Institute, Shaheed Beheshti University of Medical Sciences, Tehran, Iran
| | - Fereshteh Baygi
- Department of Public Health, Research Unit of General Practice, University of Southern Denmark, Odense, Denmark
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The Role of Carcinogenesis-Related Biomarkers in the Wnt Pathway and Their Effects on Epithelial-Mesenchymal Transition (EMT) in Oral Squamous Cell Carcinoma. Cancers (Basel) 2020; 12:cancers12030555. [PMID: 32121061 PMCID: PMC7139589 DOI: 10.3390/cancers12030555] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 12/27/2022] Open
Abstract
As oral squamous cell carcinoma (OSCC) can develop from potentially malignant disorders (PMDs), it is critical to develop methods for early detection to improve the prognosis of patients. Epithelial-mesenchymal transition (EMT) plays an important role during tumor progression and metastasis. The Wnt signaling pathway is an intercellular pathway in animals that also plays a fundamental role in cell proliferation and regeneration, and in the function of many cell or tissue types. Specific components of master regulators such as epithelial cadherin (E-cadherin), Vimentin, adenomatous polyposis coli (APC), Snail, and neural cadherin (N-cadherin), which are known to control the EMT process, have also been implicated in the Wnt cascade. Here, we review recent findings on the Wnt signaling pathway and the expression mechanism. These regulators are known to play roles in EMT and tumor progression, especially in OSCC. Characterizing the mechanisms through which both EMT and the Wnt pathway play a role in these cellular pathways could increase our understanding of the tumor genesis process and may allow for the development of improved therapeutics for OSCC.
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Chen Y, Wang X, Fang J, Song J, Ma D, Luo L, He B, Xia J, Lui VWY, Cheng B, Wang Z. Mesenchymal stem cells participate in oral mucosa carcinogenesis by regulating T cell proliferation. Clin Immunol 2018; 198:46-53. [PMID: 30528889 DOI: 10.1016/j.clim.2018.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 12/01/2018] [Indexed: 12/29/2022]
Abstract
Recent evidences suggested that Mesenchymal stem cells (MSCs) may be involved in tumor formation by modulating of the tumor microenvironment, but it is still unclear the potential of MSCs in the malignant transformation of oral mucosa. Using a chemically-induced oral carcinogenesis model by 4-nitroquinoline-1-oxide (4NQO), we generated precancerous lesions and cancerous lesions in the oral cavity of rats. Flow cytometric analysis on lesions derived single cell suspension revealed an increase in the proportion of MSCs and a decreased proportion of T cell during oral mucosa malignancy. Moreover, MSCs showed increased immunosuppression capacity on T cell proliferation during mucosa malignancy. At last, we demonstrated that higher frequency of lesions resident MSCs was correlated with more Ki67 expression in the lesion, which indicated higher cellular proliferative status in the lesions. Our study demonstrated that MSCs may play an important role in oral mucosa malignant transformation through regulating T cell proliferation.
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Affiliation(s)
- Yichen Chen
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Stomatological Hospital, Sun Yat-Sen University, No. 56, Lingyuanxi Road, Guangzhou, CN 510000, China
| | - Xi Wang
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Stomatological Hospital, Sun Yat-Sen University, No. 56, Lingyuanxi Road, Guangzhou, CN 510000, China
| | - Juan Fang
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Stomatological Hospital, Sun Yat-Sen University, No. 56, Lingyuanxi Road, Guangzhou, CN 510000, China
| | - Jingjing Song
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Stomatological Hospital, Sun Yat-Sen University, No. 56, Lingyuanxi Road, Guangzhou, CN 510000, China
| | - Da Ma
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Stomatological Hospital, Sun Yat-Sen University, No. 56, Lingyuanxi Road, Guangzhou, CN 510000, China
| | - Liqun Luo
- Zhongshan School of Medicine, Sun Yat-Sen University, No. 74, Zhongshan 2nd Road, Guangzhou, CN 510275, China
| | - Bailin He
- Zhongshan School of Medicine, Sun Yat-Sen University, No. 74, Zhongshan 2nd Road, Guangzhou, CN 510275, China
| | - Juan Xia
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Stomatological Hospital, Sun Yat-Sen University, No. 56, Lingyuanxi Road, Guangzhou, CN 510000, China
| | - Vivian Wai Yan Lui
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong. Lo Kwee-Seong Integrated Biomedical Sciences Building, Area 39, CN 999077, Hong Kong Special Administrative Region
| | - Bin Cheng
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Stomatological Hospital, Sun Yat-Sen University, No. 56, Lingyuanxi Road, Guangzhou, CN 510000, China.
| | - Zhi Wang
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Stomatological Hospital, Sun Yat-Sen University, No. 56, Lingyuanxi Road, Guangzhou, CN 510000, China.
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Comparative evaluation of autofluorescence imaging and histopathological investigation for oral potentially malignant disorders in Taiwan. Clin Oral Investig 2018; 23:2395-2402. [PMID: 30302607 DOI: 10.1007/s00784-018-2691-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Accepted: 10/02/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVES Autofluorescence imaging is gaining popularity as an adjunctive test for oral potentially malignant disorders (OPMD). This study evaluated the efficacy of autofluorescence imaging based on the current standard oral mucosal disorder checklist in Taiwan. MATERIALS AND METHODS In total, 126 patients suspected to have mucosal disorders at the Division of Oral and Maxillofacial Surgery, Tri-Service General Hospital, Taipei, Taiwan, were enrolled. Following a conventional oral examination by using the oral mucosal disorder checklist and an autofluorescence imaging examination, all participants underwent histopathological examination to access epithelial dysplasia. RESULTS Among 126 patients, 68 patients were diagnosis as having an OPMD and 63 having epithelial dysplasia. Autofluorescence imaging exhibited a sensitivity, specificity, positivity predictive value (PPV), negative predictive value (NPV), and accuracy of 77.94%, 35.42%, 63.10%, 53.13%, and 60.34%, respectively, for OPMD and of 88.89%, 43.86%, 63.64%, 78.13%, and 67.50%, respectively, for epithelial dysplasia. After the exclusion of 48 non-OPMD cases according to the checklist, the sensitivity, specificity, PPV, NPV, and accuracy of autofluorescence imaging became 87.50%, 72.73%, 94.23%, 53.33%, and 85.07%, respectively, for epithelial dysplasia. CONCLUSION The efficacy of epithelial dysplasia identification and OPMD risk assessment can be increased after the exclusion of the non-OPMD cases through autofluorescence imaging. CLINICAL RELEVANCE Autofluorescence imaging is a useful adjunct that can assist specialists in assessing OPMD patients prone to dysplasia without compromising patient care.
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Abstract
Oral potentially malignant disorders (OPMDs) refer to epithelial lesions and conditions with an increased risk for malignant transformation; oral leukoplakia is the most commonly encountered. Overall, OPMDs have a low risk for malignant transformation, yet the challenge is the difficulty to reliably identify and predict which patients with OPMDs are at the highest risk for malignant transformation. Future research is needed to elucidate the molecular aspects of OPMDs, to improve current diagnostic strategies, leading to personalized management.
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Kallalli BN, Rawson K, Muzammil, Singh A, Awati MA, Shivhare P. Lactate dehydrogenase as a biomarker in oral cancer and oral submucous fibrosis. J Oral Pathol Med 2016; 45:687-690. [PMID: 27132033 DOI: 10.1111/jop.12451] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND Oral cancer is the commonest cause of death in the Indian population, with a mortality rate of 0.3 million deaths per year. Oral submucous fibrosis (OSMF) is a potentially malignant disorder that has a high prevalence rate in India. It has been found that serum lactate dehydrogenase levels are increased in potentially malignant and malignant disorders. There are very few data on the application of salivary LDH in the detection of such disorders. AIMS AND OBJECTIVES The estimation of LDH levels in saliva as diagnostic markers, using a noninvasive method in patients with OSMF, oral cancer, and in the controls. METHODS A total of 60 subjects with the age range of 20-70 years were selected from the Department of Oral Medicine & Radiology and were grouped into three groups. Twenty-five subjects with clinically diagnosed OSMF (Group I), 25 subjects with histopathologically diagnosed oral cancer (Group II), and 10 subjects as control (Group III). Five milliliters of unstimulated whole saliva was aseptically collected. Following which, the collected saliva was centrifuged and then analyzed by ERBA-CHEM 5 semi auto-analyzer. The values obtained were statistically analyzed using descriptive statistics and paired t-test using the SPSS software version 22. P-value < 0.05- was taken as significant. RESULTS The mean LDH levels were Group I 608.28 ± 30.22, Group II 630.96 ± 39.80, and Group III 182.21 ± 34.85. The P-value obtained was 0.0009 for both Group I and Group II which was highly significant. CONCLUSION Salivary LDH levels were consistently higher in OSMF and oral cancer; hence, it could be a future biomarker.
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Affiliation(s)
- Basavaraj N Kallalli
- Department of Oral Medicine & Radiology, Narsinhbhai Patel Dental College & Hospital, Visnagar, Gujarat, India
| | - Kamala Rawson
- Department of Oral Medicine & Radiology, Narsinhbhai Patel Dental College & Hospital, Visnagar, Gujarat, India. ,
| | - Muzammil
- Division of Periodontic, Department of Preventive Dental Sciences, Buraydah College of Pharmacy & Dentistry, Buraydah, Saudi Arabia
| | - Ankur Singh
- Department of Oral Medicine & Radiology, Narsinhbhai Patel Dental College & Hospital, Visnagar, Gujarat, India
| | - Mohammed Arif Awati
- Department of Oral Medicine & Radiology, Narsinhbhai Patel Dental College & Hospital, Visnagar, Gujarat, India
| | - Peeyush Shivhare
- Department of Oral Medicine & Radiology, Narsinhbhai Patel Dental College & Hospital, Visnagar, Gujarat, India
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Hazzah HA, Farid RM, Nasra MMA, Zakaria M, Gawish Y, El-Massik MA, Abdallah OY. A new approach for treatment of precancerous lesions with curcumin solid-lipid nanoparticle-loaded gels: in vitro and clinical evaluation. Drug Deliv 2015; 23:1409-19. [PMID: 26146889 DOI: 10.3109/10717544.2015.1065524] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Preparation and characterization of curcumin solid-lipid nanoparticle (CurSLN)-loaded mucoadhesive gel for local treatment of oral precancerous lesions with low dose. METHODOLOGY The formulated CurSLNs were dispersed in a mucoadhesive gel matrix to be applied to the buccal mucosa. Conventional mucoadhesive gel using binary system was adopted. The prepared gels were evaluated for in vitro drug dialysis, ex vivo mucoadhesion test and ex vivo permeation study using chicken buccal mucosa. Short-term clinical evaluation was carried out on 10 patients suffering oral erythroplakia in terms of pain index and lesion size measurement. (1) RESULTS: The results showed that the loaded gel with CurSLN showed good mucoadhesion property and 25 min in vivo residence time. In addition to stability enhancement for the Cur powder. All formulae did not show any drug permeated, however, significant amount of Cur was retained within the chicken buccal mucosal tissue confirmed by histological examination. Significant reduction in pain, and complete healing was observed after 6 weeks of treatment. CONCLUSION The local use of Cur in low dose is a promising option for treatment of precancerous lesions. The lack of local anti-inflammatory compounds with reduced side effects intensifies the importance of studying natural products for this purpose.
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Affiliation(s)
- Heba A Hazzah
- a Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing , Pharos University in Alexandria , Alexandria , Egypt
| | - Ragwa M Farid
- a Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing , Pharos University in Alexandria , Alexandria , Egypt
| | - Maha M A Nasra
- b Department of Pharmaceutics, Faculty of Pharmacy , and
| | - Mennatallah Zakaria
- c Department of Oral Medicine, Periodontology, Oral Diagnosis and Radiology, Faculty of Dentistry , Alexandria University , Alexandria , Egypt
| | - Yousria Gawish
- c Department of Oral Medicine, Periodontology, Oral Diagnosis and Radiology, Faculty of Dentistry , Alexandria University , Alexandria , Egypt
| | - Magda A El-Massik
- a Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing , Pharos University in Alexandria , Alexandria , Egypt
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Mortazavi H, Hajian S, Fadavi E, Sabour S, Baharvand M, Bakhtiari S. ABO blood groups in oral cancer: a first case-control study in a defined group of Iranian patients. Asian Pac J Cancer Prev 2014; 15:1415-8. [PMID: 24606475 DOI: 10.7314/apjcp.2014.15.3.1415] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The ABO blood group has been recently proposed to influence development of oral cancer. The aim of this study was to evaluate the association between the type of ABO blood group and oral cancer. In a case-control study, 104 patients with oral cancer were compared with 90 blood donors without cancer as controls. Data regarding the patient demographics, blood groups, Rh status, cancer characteristics and oral habits were also compared between two subgroups of squamous and non-squamous oral cancers. For statistical analysis, Chi-square test, t-student Test and Logistic Regression were used to analyze the relationship between ABO blood groups and oral cancer. The frequency of blood group B was significantly higher in oral cancer patients than controls (32% vs 13%) (p value=0.01), but Rh factor did not show significant difference between cases and controls. According to Logistic Regression, people with blood group B and those older than 50 had 3.5 and 19.4 times elevated risk of developing oral cancer, respectively. The frequency of squamous cell cancer was also significantly higher in men and people older than 50. On the other hand, females, people under 50, and those with blood group B were at 5.6, 2.9 and 4.3 times higher risk of developing non-squamous cell oral cancer,respectively. People with blood group B are at a greater risk of developing oral cancer, and female patients under 50 years of age with blood group B have the highest risk to develop non-squamous cell oral cancer.
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Affiliation(s)
- Hamed Mortazavi
- Oral Medicine Department, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran E-mail :
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Histopathogenesis of non-HPV-related differentiated oral squamous intraepithelial neoplasia. Appl Immunohistochem Mol Morphol 2014; 23:273-9. [PMID: 25356942 DOI: 10.1097/pai.0000000000000080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
INTRODUCTION A study of immunohistopathologic and cytohistopathologic changes of the parabasal/basal layers in the differentiated squamous intraepithelial neoplasia (DSIN) may elucidate the histopathogenesis and reveal changes aiding early diagnosis and grading of the lesion. MATERIALS AND METHODS A total of 55 consecutive resection specimens of nonbasaloid squamous cell carcinoma of the anterior oral cavity and 8 biopsies before resections displaying DSIN in the overlying squamous epithelium were examined. RESULTS Squamous epithelium that is continuous/immediately adjacent to invasive squamous cell carcinoma (type 1) and the more peripheral (type 2) epithelium of resection specimens displayed consistent changes in the parabasal/basal layers: (A) cytologic atypia with proliferation of parabasal cells with downward expansion causing reactive proliferation of the basal cell layer in the early stage, invading the basal layer in the late stage; (B) disordered nuclear/cytoplasmic arrangement; (C) "Cobblestone" appearance. Immunoreactivity for TP53 and Ki67 was helpful in the diagnosis. The epithelial spectrum of changes decreased as one moved from type 1 to type 2 lesions. Five out of 8 biopsies showed type 1 lesions (followed by resection in a period of 11±6 mo) and 3 showed type 2 lesions (followed by resection in a period of 55±20 mo). In addition, resections were margin positive for type 2 lesions in 5 cases associated with recurrence at the site of resection during a period of 69±9 months. CONCLUSIONS DSIN is characterized by a proliferation of neoplastic parabasal cells with dyskeratosis, downward expansion/pushing of the basal layer with elongation of rete ridges. We proposed grading of DSIN based on the changes of the parabasal/basal layers.
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Mortazavi H, Baharvand M, Mehdipour M. Oral potentially malignant disorders: an overview of more than 20 entities. J Dent Res Dent Clin Dent Prospects 2014; 8:6-14. [PMID: 25024833 PMCID: PMC4091702 DOI: 10.5681/joddd.2014.002] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Accepted: 08/07/2013] [Indexed: 12/13/2022] Open
Abstract
Cancer of the oral cavity accounts for approximately 3% of all malignancies diagnosed annually in 270,000 patients world-wide. Oral cancer is the 12th most common cancer in women and the 6th in men. Many oral squamous cell carcinomas develop from potentially malignant disorders (PMDs). Lack of awareness about the signs and symptoms of oralPMDs in the general population and even healthcare providers is believed to be responsible for the diagnostic delay of these entities. The aim of this article is to update and improve the knowledge of healthcare providers about oral PMDs.
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Affiliation(s)
- Hamed Mortazavi
- 1Associate Professor, Department of Oral and Maxillofacial Medicine, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Baharvand
- 1Associate Professor, Department of Oral and Maxillofacial Medicine, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Masoumeh Mehdipour
- 1Associate Professor, Department of Oral and Maxillofacial Medicine, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Paliga A, Mai KT. Squamous Cell Carcinomas of the Anterior Oral Cavity Are Commonly Associated With Simplex (or Differentiated) Oral Intraepithelial Neoplasia. Int J Surg Pathol 2013; 22:231-40. [DOI: 10.1177/1066896913512866] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction: We investigated the occurrence of differentiated oral intraepithelial neoplasia (DOIN) that met the criteria for differentiated intravulvar neoplasia, associated with invasive squamous cell carcinoma (SCC) of the anterior oral cavity, and its clinicopathologic significance. Materials and Methods: Sixty-nine consecutive cases of SCC of the anterior oral cavity were categorized into 2 groups: group A comprised SCC associated with DOIN; Group B consisted of cases associated with classical SCC in situ. Results: Fifty-five cases (80%) were classified as group A, or DOIN lesions, with only 14 (20%) as group B. All cases were associated with invasive SCC, except 2 cases in group B. Squamous epithelium continuous or adjacent to invasive SCC displayed consistent changes in the parabasal and basal layers with (1) cytologic atypia with proliferation of parabasal cells in downward expansion causing reactive proliferation of the basal cell layer in early stage and invading the basal layer in late stage, (2) disordered nuclear/cytoplasmic arrangement, and (3) a “cobblestone” appearance characterized by prominent intercellular spaces and cytoplasmic density involving the entire cell (dyskeratosis) of the parabasal layer. p53 and Ki67 immunostaining revealed linear reactivity mainly in the parabasal layer. Conclusions: DOIN lesions are frequently associated with invasive SCC of anterior oral cavity. Due to the subtle histopathologic changes, DOIN lesions pose potential diagnostic difficulty with differentiation from mild dysplasia or reactive atypia.
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Affiliation(s)
- Aleksandra Paliga
- Department of Pathology and Laboratory Medicine, The Ottawa Hospital and University of Ottawa, Ontario, Canada
| | - Kien T. Mai
- Department of Anatomical Pathology, The Ottawa Hospital and Ottawa University, Ottawa, Ontario, Canada
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Chandran R, Meer S, Feller L. Oral leukoplakia in a South African sample: a clinicopathological study. Oral Dis 2012; 19:592-7. [PMID: 23210506 DOI: 10.1111/odi.12040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 10/23/2012] [Accepted: 10/30/2012] [Indexed: 11/27/2022]
Abstract
OBJECTIVE This study analysed differences in clinicopathological features of oral leukoplakia in different racial groups in the greater Johannesburg area of South Africa, with emphasis on the black population. MATERIAL AND METHODS The retrospective review included cases diagnosed clinically as oral leukoplakia and histologically as hyperkeratosis without dysplasia, hyperkeratosis with mild, moderate or severe dysplasia, and carcinoma in situ from 1990 to 2010. Age, gender, ethnicity, clinical appearance, site of lesion and tobacco smoking habit were recorded. RESULTS Fourteen per cent of oral leukoplakia occurred in black South Africans compared with 80% in white South Africans. In contrast to whites, blacks were diagnosed with oral leukoplakia at a younger age; there were more men affected than women; and the proportion of idiopathic leukoplakia was greater. There were significantly more blacks (23%) than whites (13%) with non-homogenous leukoplakia and significantly more whites (51%) than blacks (23%) with dysplastic oral leukoplakia. CONCLUSION This study suggests that oral leukoplakia, especially non-homogenous and idiopathic forms affects South African blacks less frequently than white South Africans; and in the former, it occurs more in men and at a younger age. These findings may provide some guidance in establishing screening policies for oral cancer, particularly suited for blacks.
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Affiliation(s)
- R Chandran
- Department of Oral Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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