scholarly journals Oral Malignancy Detection Using Color Features from Digital True Color Images

2020 ◽  
Vol 16 (14) ◽  
pp. 95
Author(s):  
Nanditha B R ◽  
Geetha Kiran A ◽  
Chandrashekar H S ◽  
Dinesh M.S ◽  
Murali S
Keyword(s):  
Early Stage ◽  
Oral Lesion ◽  
High Rate ◽  
Premalignant Lesions ◽  
Oral Lesions ◽  
Color Features ◽  
The Neural Network ◽  
Malignant Lesions ◽  
Oral Malignancy ◽  
True Color

<p class="0abstract"><span lang="EN-US">One of the most prevalent forms of cancer worldwide is oral cancer which has a high rate of mortality. Diagnosis and treatment of oral premalignant lesions at an early stage reduces the death rate. The objective of this work is to detect malignancies by analyzing color features of digital true color oral images. A dataset of around 433 oral lesion images has been created that includes benign, premalignant and malignant lesions. The proposed method was experimented on this dataset. Different classifiers have been trained using various color features. The neural network classifier detects abnormalities with an accuracy of 94.82%. Results indicate that the color features have better potential in identifying benign and malignant oral lesions. </span></p>

An observational study of benign oral lesions in central India

2017 ◽  
Vol 3 (4) ◽  
pp. 816
Author(s):  
Prashant N. Keche ◽  
Nishikant P. Gadpayle ◽  
Surendra H. Gawarle ◽  
Gaurav A. Chamania
Keyword(s):  
Oral Cavity ◽  
Malignant Tumors ◽  
Early Stage ◽  
Minor Salivary Gland ◽  
Salivary Gland Tumor ◽  
Oral Lesions ◽  
Age Group ◽  
Cross Sectional ◽  
Male Predominance ◽  
Malignant Lesions

<p class="abstract"><strong>Background:</strong> <span lang="EN-IN">The oral mucosa serves as a protective barrier against trauma, pathogens and carcinogenic agents. It can be affected by a wide variety of lesions and conditions, some of which are harmless while others may have serious complications. The appearance of benign oral soft tissue masses can occasionally resemble malignant tumors. </span></p><p class="abstract"><strong>Methods:</strong> <span lang="EN-IN">Present study is an observational and cross sectional study under taken in the Department of ENT in Shri Vasant Rao Naik Government Medical College, Yavatmal. All cases of benign oral lesions were included in the study and following cases were excluded: malignant oral lesions, immunocompromised state and benign Oral lesions due to systemic diseases.  </span></p><p class="abstract"><strong>Results:</strong> <span lang="EN-IN">Present study included 235 lesions of oral cavity which were clinically or histo-pathologically found to be benign in nature.<strong> </strong>Benign oral lesions were more commonly found in males with (70.2%) than females (29.8%), and M:F ratio was 2.3:1. most common benign oral lesions were found to be Oral Sub Mucus Fibrosis (26.8%) followed by Apthous ulcers (20.4%), Leukoplakia (18.3%) and Mucocele (17.1%). Least common benign oral lesions were found to be Minor Salivary Gland Tumor (MSGT) (1.7%) followed by Squamous Papilloma (2.1%), Ranula (2.1%) and Hemangioma (2.1). There was a male predominance in oral sub mucus fibrosis with M:F ratio of 9.5:1 followed by Leukoplakia with M:F ratio of 4.4:1. OSMF was found most commonly in 21-30 years age group with (57.1%). Followed by 11-20 years with (20.6%). No cases were found in ≤10 years, 51-60 and &gt;60 years age group. </span></p><p class="abstract"><strong>Conclusions:</strong> <span lang="EN-IN">Most of the benign oral lesions have a predilection to transform into malignant lesions therefore imperative to diagnose the pre malignant lesions of oral cavity in an early stage where appropriate treatment can be given.</span></p>

scholarly journals Role of exfoliative cytology in oral lesions: with special reference to rule out malignancy

1970 ◽  
Vol 6 (2) ◽  
pp. 29-37 ◽  
Author(s):  
A Singh
Keyword(s):  
Early Stage ◽  
Invasive Procedure ◽  
Epidemiological Data ◽  
Inflammatory Cells ◽  
Oral Lesions ◽  
Exfoliative Cytology ◽  
Group I ◽  
Undifferentiated Cells ◽  
Oral Malignancy ◽  
Surgery Department

Oral malignancy is quite common in country like India because of tobacco chewing and smoking. Cytology is cheaper and easy procedure that can be carried out at outdoor patient department to diagnose malignancy at early stage. The present study carried out to detect cancer pre-invasive stage by use of exfoliative cytology and to explore the possibility of using this technique in diagnosis of other oral lesions considered as premalignant ones. A total 102 patients referred from OPD and surgery department of J.A. Group of Hospital, Madhav Dispensary and Cancer Hospital, Gwalior, between July 2004 to October 2005, were included in this study. Two smears by scrap method, from each patient were prepared and after air dried stained with RAPID PAP stain. The smear were evaluated along with clinical, epidemiological data and classified in group I to IV according to the Papanicolaou classification. In our result 25 cases were normal. 47 were Leukoplakia with mean age 47.5 years, 85% male. Smear show anucleated squames predominantly 53%. Six cases were submucous fibrosis 66.7% female with mean age 38.3 years and, smear revealed rarification of nuclei in 66% cases. Two cases of mucosal hyperemia (Erythema), one-one case of traumatic ulcer and granular buccal mucosa included. Out of Twenty cases of malignancy, male were 75% with mean age of 46 year. Cheek and tongue were the common site with incidence of 60%. The smear revealed inflammatory cells in 100%, malignant cells in 75% cases either in groups or in singles. The third type of cells 60%, the undifferentiated cells 37%, and Tadpole cells in 5% cases. In study 75% cases were positive for cancer, 10% were suspicious for cancer and remaining 15% were given as negative for cancer. Cytology is reliable diagnostic tool in diagnosis of presence or absence of malignancy in a lesion with high accuracy rate. The oral cytologic technique is easy to do and can provide the help of surgeon/physician, where he/she might hesitate to perform an invasive procedure, like a biopsy, or desire more information regarding a lesion before referring the patient. Key words: Cancer; exfoliative cytology; leukoplakia; oral malignancy. DOI: 10.3126/jcmsn.v6i2.3614 Journal of college of Medical Sciences-Nepal, 2010, Vol.6, No-2, 29-37

scholarly journals Role of exfoliative cytology in diagnosis of oral lesions: With special reference to rule out malignancy

2021 ◽  
Vol 6 (2) ◽  
pp. 84-89
Author(s):  
Shoborose Tantray ◽  
Seema Sharma
Keyword(s):  
Buccal Mucosa ◽  
Early Stage ◽  
Oral Submucous Fibrosis ◽  
Invasive Procedure ◽  
Epidemiological Data ◽  
Inflammatory Cells ◽  
Oral Lesions ◽  
Exfoliative Cytology ◽  
Group I ◽  
Oral Malignancy

Oral malignancy is very common in India because of the excessive use of tobacco chewing and smoking. Procedure of Cytology is inexpensive and unchallenging that can be carried out effortlessly at outdoor patient department to diagnose malignancy at early stage. The present study was carried out to detect cancer pre-invasive stage by use of exfoliative cytology and to probe the probability of using this technique in diagnosis of other oral lesions thought as premalignant ones. A total 102 patients referred from OPD and Surgery Department of a Private Hospital, Dispensary and Cancer Hospital, Delhi, between August 2019 to April 2020 , were included in this study. Two smears were taken by scrap method, from each patient and were prepared after air dried stained with RAPID PAP stain. According to the Papanicolaou classification the smear were assessed along with clinical, epidemiological data and classified in group I to IV. In our result 25 cases were normal, leukoplakia 47 cases with mean age 47.5 years, 85% male. Predominantly 53% Smear show anucleated squames. 06 cases were Oral submucous fibrosis ,66.7% were female with mean age 38.3 years and, the present smear revealed rarification of nuclei in 66% cases. 02 cases of mucosal hyperemia (Erythema), one-one case of traumatic ulcer and granular buccal mucosa were included. Out of 12 cases of malignancy, male were 75% with mean age of 46 year. Buccal mucosa and tongue were the common site with incidence of 60%. The smear showed inflammatory cells in 100%, malignant cells in 75% cases either in groups or in singles. The third type of cells 60%, 37% the undifferentiated cells, and 5% cases Tadpole cells. In this study 75% cases were positive for cancer, 10% were suspicious for cancer and remaining 15% were given as negative for cancer. For the diagnosis of presence or absence of malignancy in a lesion with high accuracy rate Cytology is reliable diagnostic tool. The oral cytologic technique is effortless to do and can provide the help of surgeon/physician, instead of performing an invasive procedure, like a biopsy, or desire more information regarding a lesion before referring the patient.

scholarly journals The detection of oral pre- malignant lesions with an autofluorescence based imaging system (VELscopeTM) – a single blinded clinical evaluation

2013 ◽  
Vol 9 (1) ◽  
Author(s):  
Henning Hanken ◽  
Juliane Kraatz ◽  
Ralf Smeets ◽  
Max Heiland ◽  
Marco Blessmann ◽  
...  
Keyword(s):  
Early Detection ◽  
White Light ◽  
Imaging System ◽  
Early Stage ◽  
Premalignant Lesions ◽  
Diagnostic Strategies ◽  
Non Invasive ◽  
Invasive Test ◽  
Malignant Lesions ◽  
Group 2

Abstract Objective The disease specific five-year survival rate especially for patients with advanced oral cancer has not improved significantly over the period of time. The most effective way of combating this dilemma is an early detection, diagnosis and eradication of early-stage lesions and their precursors. The use of VELscope® using an autofluorescence as a diagnostic tool might be useful in early detection of oral malignant lesions. Materials and methods 120 patients with suspicious oral premalignant lesions were examined with two examination methods. They were randomly divided into two groups. Group 1 was examined conventional with white-light and group 2 was examined additionally to the white-light-examination with an autofluorescence visualization device, VELscope®. Biopsies were obtained from all suspicious areas identified in both examination groups (n = 52). The diagnostic strategies were compared regarding sensitivity and specificity. Results Based upon the result, use of the VELscope® leads to a higher sensitivity (22.0%), but regarding specificity the additional use of the VELscope® is inferior (8.4%). Conclusion The VELscope device is a simple, non-invasive test of the oral mucosa, which can help the experienced clinician to find oral precursor malignant lesions.

scholarly journals Evaluation of the Accuracy of Liquid-Based Oral Brush Cytology in Screening for Oral Squamous Cell Carcinoma

Cancers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1813 ◽  
Author(s):  
Deuerling ◽  
Gaida ◽  
Neumann ◽  
Remmerbach
Keyword(s):  
Squamous Cell ◽  
Early Stage ◽  
Oral Lesions ◽  
Brush Cytology ◽  
Brush Biopsy ◽  
Highly Sensitive ◽  
Potentially Malignant ◽  
Identical Number ◽  
Malignant Lesions ◽  
Liquid Based Cytology

This study evaluates the accuracy of the results of liquid-based oral brush cytology and compares it to the histology and/or the clinical follow-ups of the respective patients. A total of 1352 exfoliated specimens were collected with an Orcellex brush from an identical number of oral lesions, then cytological diagnoses were made using liquid-based cytology. The final diagnoses in the study were 105 histologically proven squamous cell carcinomas (SCCs), 744 potentially malignant lesions and 503 cases of traumatic, inflammatory or benign hyperplastic oral lesions. The sensitivity and specificity of the liquid-based brush biopsy were 95.6% (95% CI 94.5–96.7%) and 84.9% (95% CI 83.0–86.8%), respectively. This led to the conclusion that brush biopsy is potentially a highly sensitive and reliable method to make cytological diagnoses of oral neoplasia. The main advantage of a brush biopsy over a scalpel biopsy is that it is less invasive and is more tolerated by the patients. Therefore, more lesions can be screened and more cancers can be detected at an early stage.

scholarly journals A comprehensive analysis of single-cell transcriptome network underlying gastric premalignant lesions and early gastric cancer

2018 ◽  
Author(s):  
Peng Zhang ◽  
Mingran Yang ◽  
Yiding Zhang ◽  
Shuai Xiao ◽  
Xinxing Lai ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Single Cell ◽  
Early Stage ◽  
Cell Subset ◽  
Premalignant Lesions ◽  
Data Resource ◽  
Precise Diagnosis ◽  
Malignant Lesions ◽  
Cell Transcriptome ◽  
Single Cell Transcriptome

SummaryIntestinal-type gastric cancer is preceded by premalignant lesions including chronic atrophic gastritis (CAG) and intestinal metaplasia (IM), which are characterized as changes in cell types. In this study, for the first time, we systematically constructed a single-cell atlas for a total of 31,164 high-quality cells from gastric mucosa biopsies of patients spanning a cascade of gastric premalignant lesions and early gastric cancer (EGC) using single-cell RNA sequencing (scRNA-seq). Based on the atlas, we construct a network underlying the changes of cellular and molecular characteristics of gastric epithelial cells across different lesions. We found the conversion of gland mucous cells (GMCs) toward a more intestinal-like stem cell phenotype during metaplasia, and identified OR51E1 as a novel marker for early-malignant enteroendocrine cells. We also found that HES6 might mark a goblet cell subset that precede morphologically identifiable goblet cells in IM mucosa, potentially aiding the identification of metaplasia at the early stage. Finally, we identified a panel of EGC-related specific signature, with clinical implications for the precise diagnosis of EGC. Our study offers unparalleled insights into the human gastric cellulome in premalignant and early-malignant lesions and provides an important data resource that will facilitate studies in gastritis-induced tumourigenesis and gastric cell biology.Significance StatementUnderstanding cellular characteristics in gastric premalignant and malignant lesions would help us better understand the gastric cancer (GC) pathogenesis. In this paper, for the first time, we systematically constructed a single-cell transcriptome network of human premalignant gastric mucosa and early GC (EGC) and derived novel findings from it. We identified OR51E1 as a novel marker for early-malignant enteroendocrine cells and a panel of genes as the EGC-specific signature, with clinical implications for the precise diagnosis of EGC. We also found HES6 might mark a goblet cell subset that precede morphologically identifiable goblet cells in IM mucosa, potentially aiding the identification of metaplasia at the early stage. Our study provided an unprecedented data resource that will facilitate studies underlying gastritis-induced tumorigenesis.

Premalignant and Malignant Lesions of the Heterotopic Pancreas in the Esophagus: a Case Report and Review of the Literature

2015 ◽  
Vol 24 (2) ◽  
pp. 235-239 ◽  
Author(s):  
Jan Ulrych ◽  
Vladimir Fryba ◽  
Helena Skalova ◽  
Zdenek Krska ◽  
Tomas Krechler ◽  
...  
Keyword(s):  
Case Report ◽  
Gastrointestinal Tract ◽  
Unusual Case ◽  
Accurate Diagnosis ◽  
Heterotopic Pancreas ◽  
Premalignant Lesions ◽  
Resected Specimen ◽  
Review Of The Literature ◽  
Severe Dysphagia ◽  
Malignant Lesions

Heterotopic pancreas is a congenital pathology of the gastrointestinal tract, particularly rare in the esophagus. Both symptomatology and findings during preoperative examinations are non-specific and therefore do not often lead to an accurate diagnosis, which is usually revealed only by histopathological assessment of a resected specimen. We report an unusual case of a patient suffering from severe dysphagia caused by heterotopic pancreas in the distal esophagus with chronic inflammation and foci of premalignant changes. This article also reviews 14 adult cases of heterotopic pancreas in the esophagus previously reported in the literature, with the aim of determining the clinical features of this disease and possible complications including rare premalignant lesions and malignant transformation. Especially with regard to those complications, we suggest that both symptomatic and incidentally found asymptomatic lesions should be resected.

scholarly journals In-hospital recurrence in a Chinese large cohort with acute ischemic stroke

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Fan Yu ◽  
Xiaolu Liu ◽  
Qiong Yang ◽  
Yu Fu ◽  
Dongsheng Fan
Keyword(s):  
Risk Factors ◽  
Ischemic Stroke ◽  
Hospital Mortality ◽  
Hospital Stay ◽  
Acute Ischemic Stroke ◽  
Recurrent Events ◽  
Early Stage ◽  
High Rate ◽  
Large Artery ◽  
Stroke Event

Abstract Acute ischemic stroke (AIS) has a high risk of recurrence, particularly in the early stage. The purpose of this study was to assess the frequency and risk factors of in-hospital recurrence in patients with AIS in China. A retrospective analysis was performed of all of the patients with new-onset AIS who were hospitalized in the past three years. Recurrence was defined as a new stroke event, with an interval between the primary and recurrent events greater than 24 hours; other potential causes of neurological deterioration were excluded. The risk factors for recurrence were analyzed using univariate and logistic regression analyses. A total of 1,021 patients were included in this study with a median length of stay of 14 days (interquartile range,11–18). In-hospital recurrence occurred in 58 cases (5.68%), primarily during the first five days of hospitalization. In-hospital recurrence significantly prolonged the hospital stay (P < 0.001), and the in-hospital mortality was also significantly increased (P = 0.006). The independent risk factors for in-hospital recurrence included large artery atherosclerosis, urinary or respiratory infection and abnormal blood glucose, whereas recurrence was less likely to occur in the patients with aphasia. Our study showed that the patients with AIS had a high rate of in-hospital recurrence, and the recurrence mainly occurred in the first five days of the hospital stay. In-hospital recurrence resulted in a prolonged hospital stay and a higher in-hospital mortality rate.

scholarly journals FlowCell-enriched circulating tumor cells as a predictor of lung cancer metastasis

Human Cell ◽  
2021 ◽  
Author(s):  
Yan Lu ◽  
Yushuang Zheng ◽  
Yuhong Wang ◽  
Dongmei Gu ◽  
Jun Zhang ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Tumor Cells ◽  
Circulating Tumor Cells ◽  
Cancer Metastasis ◽  
Lung Tumor ◽  
Early Stage ◽  
High Rate ◽  
Early Stage Lung Cancer ◽  
Lung Cancer Metastasis ◽  
Number Of Patients

AbstractLung cancer is the most fetal malignancy due to the high rate of metastasis and recurrence after treatment. A considerable number of patients with early-stage lung cancer relapse due to overlooked distant metastasis. Circulating tumor cells (CTCs) are tumor cells in blood circulation that originated from primary or metastatic sites, and it has been shown that CTCs are critical for metastasis and prognosis in various type of cancers. Here, we employed novel method to capture, isolate and classify CTC with FlowCell system and analyzed the CTCs from a cohort of 302 individuals. Our results illustrated that FlowCell-enriched CTCs effectively differentiated benign and malignant lung tumor and the total CTC counts increased as the tumor developed. More importantly, we showed that CTCs displayed superior sensitivity and specificity to predict lung cancer metastasis in comparison to conventional circulating biomarkers. Taken together, our data suggested CTCs can be used to assist the diagnosis of lung cancer as well as predict lung cancer metastasis. These findings provide an alternative means to screen early-stage metastasis.

scholarly journals A Clinicopathologic and Epidemiologic Study of Chronic White Lesions in the Oral Mucosa

2017 ◽  
Vol 96 (8) ◽  
pp. E13-E17
Author(s):  
Sampurna Ghosh ◽  
Sudipta Pal ◽  
Soumya Ghatak ◽  
Somnath Saha ◽  
Surajit Biswas ◽  
...  
Keyword(s):  
Oral Mucosa ◽  
Epidemiologic Study ◽  
Significant Risk ◽  
Significant Risk Factor ◽  
Premalignant Lesions ◽  
Excision Biopsy ◽  
Severe Dysplasia ◽  
Cross Sectional ◽  
Malignant Lesions ◽  
Tobacco Chewing

Invasive oral squamous cell carcinoma is often preceded by the presence of clinically identifiable premalignant changes of the oral mucosa, including white lesions. We conducted a cross-sectional, observational study to assess the clinicopathologic and epidemiologic aspects of chronic oral mucosal white lesions to determine the necessity of early biopsy in these cases. Our study population was made up of 77 patients—50 males and 27 females, aged 15 to 70 years (mean: 42.9)—who presented with white lesions persisting for at least 4 weeks. All but 3 patients underwent a biopsy; the 3 exceptions were diagnosed with smear-proven candidiasis. Patients with moderate or severe dysplasia underwent an excision biopsy. The buccal mucosa was the single most common site of white lesions, occurring in 15 patients (19.5%), although 21 patients (27.3%) exhibited a diffuse involvement of the oral mucosa. Of the 77 patients, 59 (76.6%) had concerning findings: premalignant lesions in 45 patients (58.4%) and malignant lesions in 14 (18.2%). Also, dysplasia was seen in 8 patients (10.4%), all of whom had premalignant lesions. Tobacco chewing (p = 0.008) and betel quid chewing (p = 0.029) were significantly associated with the development of premalignant and malignant lesions; a longer duration of tobacco chewing (≥10 yr) was significantly associated with a higher risk of malignant but not premalignant lesions (p = 0.031). Finally, illiteracy was a significant risk factor for premalignant and malignant lesions (p = 0.03). Our findings support the necessity of biopsy in every case. Early detection of oral carcinoma by biopsy of all oral white lesions would not only prevent patients from undergoing disfiguring surgery and chemoradiation, but it also would increase the 5-year survival rate.

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