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Zanella VG, Costa SFDS, Schuch LF, Pilar EFS, Paes Leme AF, Dos Santos JN, Khurram SA, Elalawy F, Bingle L, Nunes FD, Fonseca FP, Vargas PA, Martins MD, Wagner VP. Pleomorphic adenoma and carcinoma ex-pleomorphic adenoma tumorigenesis: A proteomic analysis. Oral Dis 2024. [PMID: 39155517 DOI: 10.1111/odi.15109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 06/27/2024] [Accepted: 08/06/2024] [Indexed: 08/20/2024]
Abstract
OBJECTIVES To conduct a comprehensive proteomic analysis of normal salivary gland tissue, pleomorphic adenoma (PA), and carcinoma ex-pleomorphic adenoma (CXPA), and validate the proteomic findings using immunohistochemistry. METHODS Six normal salivary gland tissues, seven PA and seven CXPA samples underwent laser microdissection followed by liquid chromatography coupled to mass spectrometry. Protein identification and quantification were performed using MaxQuant software. Statistical analysis and functional enrichment were conducted using the Perseus platform and STRING tool, respectively. Immunohistochemistry was used for validation. RESULTS Comparative proteomic analysis revealed 2680 proteins across the three tissue types, with 799 significantly altered between groups. Translocation protein SEC63 homolog, Annexin A6 and Biglycan were up-regulated in CXPA compared to PA. Decorin was markedly up-regulated in both PA and CXPA compared to normal salivary gland (log2 fold changes of 7.58 and 7.38, respectively). Validation confirmed elevated levels of Biglycan and Decorin in the extracellular matrix of CXPA compared to PA. CONCLUSIONS Proteomic analysis identified differential protein expression patterns associated with malignant transformation of PA into CXPA. Findings indicate a crucial role for extracellular matrix proteins, specifically Biglycan and Decorin, in the tumorigenic progression of PA and CXPA.
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Affiliation(s)
- Virgílio Gonzales Zanella
- Department of Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- Head and Neck Surgery Department, Santa Rita Hospital, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brazil
| | - Sara Ferreira Dos Santos Costa
- Department of Oral Surgery and Pathology, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Lauren Frenzel Schuch
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | | | - Adriana Franco Paes Leme
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Jean Nunes Dos Santos
- Postgraduation Program in Dentistry and Health, Federal University of Bahia, Salvador, Brazil
| | - Syed Ali Khurram
- Academic Unit of Oral and Maxillofacial Medicine and Pathology, Department of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - Fatima Elalawy
- Academic Unit of Oral and Maxillofacial Medicine and Pathology, Department of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - Lynne Bingle
- Academic Unit of Oral and Maxillofacial Medicine and Pathology, Department of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - Fabio Daumas Nunes
- Department of Oral and Maxillofacial Pathology, Dental School, University of São Paulo (USP), São Paulo, Brazil
| | - Felipe Paiva Fonseca
- Department of Oral Surgery and Pathology, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Pablo Agustin Vargas
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Manoela Domingues Martins
- Department of Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Vivian Petersen Wagner
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
- Academic Unit of Oral and Maxillofacial Medicine and Pathology, Department of Clinical Dentistry, University of Sheffield, Sheffield, UK
- Department of Oral and Maxillofacial Pathology, Dental School, University of São Paulo (USP), São Paulo, Brazil
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Shi L, Wu D, Yang X, Yan C, Huang P. Contrast-Enhanced Ultrasound and Strain Elastography for Differentiating Benign and Malignant Parotid Tumors. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2023; 44:419-427. [PMID: 36731495 PMCID: PMC10629480 DOI: 10.1055/a-1866-4633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 05/21/2022] [Indexed: 06/18/2023]
Abstract
OBJECTIVES Preoperative differentiation between benign parotid tumors (BPT) and malignant parotid tumors (MPT) is crucial for treatment decisions. The purpose of this study was to investigate the benefits of combining contrast-enhanced ultrasound (CEUS) and strain elastography (SE) for preoperative differentiation between BPT and MPT. METHODS A total of 115 patients with BPT (n=72) or MPT (n=43) who underwent ultrasound (US), SE, and CEUS were enrolled. US and CEUS features and the elasticity score were evaluated. Receiver operating characteristic curve (ROC) analysis was used to assess the diagnostic performance of SE, CEUS, and SE + CEUS with respect to identifying MPT from BPT. RESULTS Solitary presentation, larger diameter, irregular shape, ill-defined margin, heterogeneous echogenicity, and calcification on US and higher elasticity score on SE had a significant association with malignancy. MPT also presented an unclear margin, larger size after enhancement, and "fast-in and fast-out" pattern on CEUS. The combination of SE and CEUS was effective for differentiating MPT from BPT (AUC: 0.88, 0.80-0.95), with a sensitivity of 86.0%, specificity of 88.9%, and accuracy of 87.8%, which were significantly higher than the values for SE (AUC: 0.75, 0.66-0.85) and CEUS (AUC: 0.82, 0.73-0.91) alone. CONCLUSION The combination of CEUS and SE is valuable for distinguishing MPT from BPT.
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Affiliation(s)
- Liuhong Shi
- Department of Ultrasound in Medicine, Zhejiang University School of Medicine Second Affiliated Hospital, Hangzhou, China
| | - Dingting Wu
- Nutrition Division, The Fourth Affiliated Hospital Zhejiang University School of Medicine, Yiwu, China
| | - Xu Yang
- Pathology, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, China
| | - Caoxin Yan
- Department of Ultrasound in Medicine, Zhejiang University School of Medicine Second Affiliated Hospital, Hangzhou, China
| | - Pintong Huang
- Department of Ultrasound in Medicine, Zhejiang University School of Medicine Second Affiliated Hospital, Hangzhou, China
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Bruzinga FFB, Fernandes FCF, Dias FR, Lima MG, de Souza PEA, de Aguiar MCF, Grossmann SDMC. Clinical and demographic features of minor salivary gland tumors: A collaborative study of 480 cases. Oral Dis 2023; 29:1028-1038. [PMID: 34965007 DOI: 10.1111/odi.14119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/15/2021] [Accepted: 12/10/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To describe the frequency, clinical, and demographic features of minor salivary gland tumors and possible associated factors. MATERIALS AND METHODS A cross-sectional study was conducted. Clinical and demographic data were collected from biopsy records of two oral pathology services. Chi-square test, Fisher's exact test, and descriptive statistical analysis were performed. RESULTS A total of 480 (0.89%) minor salivary gland tumors were retrieved, 272 (56.7%) benign and 147 (30.7%) malignant. Sixty-one (12.6%) had no subtype specification. Most patients were women (307/64.0%), in sixth decade of life (80/16.7%), with a mean age of 45.32 years. Palate was the most common site (336/70.1%). Pleomorphic adenoma (PA; 245/51.1%), mucoepidermoid carcinoma (MEC; 70/14.6%), and adenoid cystic carcinoma (ACC; 43/8.9%) were the most frequent tumors. Symptomatic case, recurrence, and tobacco use were associated with malignancy (p < 0.05). PA and MEC were more frequent in palate (p < 0.05). No association between the three most frequent histological types and gender or age group was observed (p > 0.05). CONCLUSIONS This represents one of the largest exclusive series of minor salivary gland tumors in Brazil and worldwide. PA, MEC, and ACC were the most frequent tumors. Clinical and demographic data are similar from Brazilian studies or from other countries.
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Affiliation(s)
- Fábio Fernandes Borém Bruzinga
- Department of Dentistry, School of Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, Brazil
| | | | - Fernanda Ribeiro Dias
- Department of Dentistry, School of Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, Brazil
| | - Marla Gabriela Lima
- Department of Dentistry, School of Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, Brazil
| | - Paulo Eduardo Alencar de Souza
- Department of Dentistry, School of Dentistry, Pontifícia Universidade Católica de Minas Gerais (PUC Minas), Belo Horizonte, Brazil
| | - Maria Cássia Ferreira de Aguiar
- Department of Oral Diagnosis and Pathology, School of Dentistry, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
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Quixabeira Oliveira GA, Pérez-DE-Oliveira ME, Robinson L, Khurram SA, Hunter K, Speight PM, Kowalski LP, Lopes Pinto CA, Sales De Sá R, Mendonça EF, Sousa-Neto SS, de Carlucci Junior D, Mariano FV, Altemani AMDAM, Martins MD, Zanella VG, Perez DEDC, Dos Santos JN, Romañach MJ, Abrahão AC, Andrade BABD, Pontes HAR, Jorge Junior J, Santos-Silva AR, Lopes MA, Van Heerden WFP, Vargas PA. Epithelial salivary gland tumors in pediatric patients: An international collaborative study. Int J Pediatr Otorhinolaryngol 2023; 168:111519. [PMID: 36965251 DOI: 10.1016/j.ijporl.2023.111519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 03/10/2023] [Accepted: 03/19/2023] [Indexed: 03/27/2023]
Abstract
OBJECTIVE Salivary gland tumors (SGT) are a diverse group of uncommon neoplasms that are rare in pediatric patients. This study aimed to characterize the clinicopathological profile of pediatric patients affected by SGT from a large case series derived from an international group of academic centers. STUDY DESIGN A retrospective analysis of pediatric patients with SGT (0-19 years old) diagnosed between 2000 and 2021 from Brazil, South Africa, and the United Kingdom was performed. SPSS Statistics for Windows was used for a quantitative analysis of the data, with a descriptive analysis of the clinicopathological characteristics and the association between clinical variables and diagnoses. RESULTS A total of 203 cases of epithelial SGT were included. Females were slightly more commonly (56.5%), with a mean age of 14.1 years. The palate was the most common site (43.5%), followed by the parotid gland (29%), lip (10%), and submandibular gland (7.5%). The predominant clinical presentation was a flesh-colored, smooth, and painless nodule. Pleomorphic adenoma (PA) was the most frequently diagnosed SGT (58.6%), followed by mucoepidermoid carcinoma (MEC) (26.6%). Surgery (90.8%) was the favored treatment option. CONCLUSIONS Benign SGT in pediatric patients are more commonly benign than malignant tumors. Clinicians should keep PA and MEC in mind when assessing nodular lesions of possible salivary gland origin in pediatric patients.
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Affiliation(s)
| | | | - Liam Robinson
- Department of Oral Pathology and Oral Biology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Syed Ali Khurram
- Unit of Oral and Maxillofacial Medicine and Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
| | - Keith Hunter
- Department of Oral Pathology and Oral Biology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa; Unit of Oral and Maxillofacial Medicine and Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
| | - Paul M Speight
- Unit of Oral and Maxillofacial Medicine and Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
| | - Luiz Paulo Kowalski
- Department of Head and Neck Surgery and Otorhinolaryngology, A.C. Camargo Cancer Center, São Paulo, Brazil; Department of Head and Neck Surgery, University of São Paulo (USP) Medical School, São Paulo, Brazil
| | - Clóvis Antonio Lopes Pinto
- Department of Head and Neck Surgery and Otorhinolaryngology, A.C. Camargo Cancer Center, São Paulo, Brazil
| | - Raísa Sales De Sá
- Oral Diagnosis Department, Piracicaba Dental School, State University of Campinas (UNICAMP), São Paulo, Brazil
| | - Elismauro Francisco Mendonça
- Department of Stomatology (Oral Pathology), School of Dentistry, Federal University of Goiás (UFG), Goiânia, Brazil
| | | | | | - Fernanda Viviane Mariano
- Department of Pathology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | | | - Manoela Domingues Martins
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Virgílio Gonzales Zanella
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil; Head and Neck Surgery Department, Santa Rita Hospital, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - Danyel Elias da Cruz Perez
- Department of Oral Pathology, School of Dentistry, Universidade Federal de Pernambuco (UFPE), Recife, Brazil
| | - Jean Nunes Dos Santos
- Laboratory of Oral Surgical Pathology, School of Dentistry, Federal University of Bahia (UFBA), Salvador, Brazil
| | - Mário José Romañach
- Department of Oral Diagnosis and Pathology, School of Dentistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Aline Corrêa Abrahão
- Department of Oral Diagnosis and Pathology, School of Dentistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | | | - Hélder Antônio Rebelo Pontes
- Service of Oral Pathology, João de Barros Barreto University Hospital, Federal University of Pará (UFPA), Belém, Brazil
| | - Jacks Jorge Junior
- Oral Diagnosis Department, Piracicaba Dental School, State University of Campinas (UNICAMP), São Paulo, Brazil
| | - Alan Roger Santos-Silva
- Oral Diagnosis Department, Piracicaba Dental School, State University of Campinas (UNICAMP), São Paulo, Brazil
| | - Márcio Ajudarte Lopes
- Oral Diagnosis Department, Piracicaba Dental School, State University of Campinas (UNICAMP), São Paulo, Brazil
| | - Willie F P Van Heerden
- Department of Oral Pathology and Oral Biology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Pablo Agustin Vargas
- Oral Diagnosis Department, Piracicaba Dental School, State University of Campinas (UNICAMP), São Paulo, Brazil; Department of Oral Pathology and Oral Biology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
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Krauss C, Wagner S, Klußmann JP, Pons-Kühnemann J, Arens C, Langer C, Wittekindt C. [Salivary gland carcinomas - Monocentric experience on subtypes and their incidences over 42 years]. Laryngorhinootologie 2022. [PMID: 36543220 DOI: 10.1055/a-1976-9694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Salivary gland carcinomas are rare and heterogeneous. More than 20 subtypes are recognized and risk factors are diverse. The aim of this work was to evaluate the subtype and other risk factors in a monocentric population from more than four decades. MATERIAL AND METHODS 205 cases (diagnosis period 1972-2014) were retrospectively collected and analyzed with regard to the distribution of risk factors and their influence on overall survival (OS). RESULTS 19/24 (79.2%) of the subtypes listed in the WHO classification occurred rarely in the cohort (< 5%). 10/24 (41.7%) of all subtypes were never diagnosed. With a total of 145/205 cases (70.7%), squamous cell carcinoma (PEC), adenocarcinoma (AdenoCa), acinar cell carcinoma (AcinarCa), mucoepidermoid carcinoma (MEC), and adenoid cystic carcinoma (ACC) were by far the most common subtypes. Risk factors are significantly different in these groups (e.g., lymphogenic metastasis and degree of differentiation in AdenoCa and age, T and UICC stage in PEC). The 5-year overall survival of all patients was 66.9% and differed significantly within the most common subtypes. An independent impact on overall survival was detectable for patient age (p<0.001), and T- (p=0.003) and N-stage (p=0.046) in multivariate analysis. CONCLUSIONS Most subtypes occurred markedly rarely or not at all within decades. The most common diagnoses differ with respect to risk factors as well as OS and 3 risk groups can be defined based on histology. In conclusion, considering TNM alone is insufficient for prognosis estimation in salivary gland carcinoma.
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Affiliation(s)
- Christian Krauss
- Klinik für HNO-Heilkunde, Kopf- und Halschirurgie, Justus Liebig Universität Giessen, Fachbereich Medizin, Giessen, Deutschland
| | - Steffen Wagner
- Klinik für HNO-Heilkunde, Kopf- und Halschirurgie, Justus Liebig Universität Giessen, Fachbereich Medizin, Giessen, Deutschland
| | - Jens-Peter Klußmann
- Klinik für HNO-Heilkunde, Kopf- und Halschirurgie, Justus Liebig Universität Giessen, Fachbereich Medizin, Giessen, Deutschland.,Medizinische Fakultät, Klinik für Hals-, Nasen-, Ohrenheilkunde, Kopf- und Halschirurgie, Universität zu Köln, Deutschland
| | - Jörn Pons-Kühnemann
- Medizinische Statistik, Institut für Medizinische Informatik, Justus Liebig Universität Giessen, Fachbereich Medizin, Giessen, Deutschland
| | - Christoph Arens
- Klinik für HNO-Heilkunde, Kopf- und Halschirurgie, Justus Liebig Universität Giessen, Fachbereich Medizin, Giessen, Deutschland
| | - Christine Langer
- Klinik für HNO-Heilkunde, Kopf- und Halschirurgie, Justus Liebig Universität Giessen, Fachbereich Medizin, Giessen, Deutschland
| | - Claus Wittekindt
- Klinik für HNO-Heilkunde, Kopf- und Halschirurgie, Justus Liebig Universität Giessen, Fachbereich Medizin, Giessen, Deutschland.,Klinik für HNO-Heilkunde, Universität Witten/Herdecke Department für Humanmedizin, Witten, Deutschland
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Apparent Diffusion Coefficient (ADC) Histogram Analysis in Parotid Gland Tumors: Evaluating a Novel Approach for Differentiation between Benign and Malignant Parotid Lesions Based on Full Histogram Distributions. Diagnostics (Basel) 2022; 12:diagnostics12081860. [PMID: 36010211 PMCID: PMC9406314 DOI: 10.3390/diagnostics12081860] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to assess the diagnostic value of ADC distribution curves for differentiation between benign and malignant parotid gland tumors and to compare with mean ADC values. 73 patients with parotid gland tumors underwent head-and-neck MRI on a 1.5 Tesla scanner prior to surgery and histograms of ADC values were extracted. Histopathological results served as a reference standard for further analysis. ADC histograms were evaluated by comparing their similarity to a reference distribution using Chi2-test-statistics. The assumed reference distribution for benign and malignant parotid gland lesions was calculated after pooling the entire ADC data. In addition, mean ADC values were determined. For both methods, we calculated and compared the sensitivity and specificity between benign and malignant parotid gland tumors and three subgroups (pleomorphic adenoma, Warthin tumor, and malignant lesions), respectively. Moreover, we performed cross-validation (CV) techniques to estimate the predictive performance between ADC distributions and mean values. Histopathological results revealed 30 pleomorphic adenomas, 22 Warthin tumors, and 21 malignant tumors. ADC histogram distribution yielded a better specificity for detection of benign parotid gland lesions (ADChistogram: 75.0% vs. ADCmean: 71.2%), but mean ADC values provided a higher sensitivity (ADCmean: 71.4% vs. ADChistogram: 61.9%). The discrepancies are most pronounced in the differentiation between malignant and Warthin tumors (sensitivity ADCmean: 76.2% vs. ADChistogram: 61.9%; specificity ADChistogram: 81.8% vs. ADCmean: 68.2%). Using CV techniques, ADC distribution revealed consistently better accuracy to differentiate benign from malignant lesions (“leave-one-out CV” accuracy ADChistogram: 71.2% vs. ADCmean: 67.1%). ADC histogram analysis using full distribution curves is a promising new approach for differentiation between primary benign and malignant parotid gland tumors, especially with respect to the advantage in predictive performance based on CV techniques.
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Alzumaili B, Xu B, Saliba M, Abuhashem A, Ganly I, Ghossein R, Katabi N. Clinicopathologic Characteristics and Prognostic Factors of Primary and Recurrent Pleomorphic Adenoma: A Single Institution Retrospective Study of 705 Cases. Am J Surg Pathol 2022; 46:854-862. [PMID: 34772841 PMCID: PMC9106806 DOI: 10.1097/pas.0000000000001837] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Although pleomorphic adenoma (PA) is benign, it may recur and prompt further treatment with radiotherapy (RT). This study investigated the prognostic features of primary and recurrent PAs. A total of 705 PAs (613 primary and 92 recurrent) were analyzed. The following parameters: age, site and size, status of resection, histologic features, and clinical management were documented and correlated with recurrence-free survival. For primary PAs: The mean patient age was 50 years (female/male: 2/1), the median size was 2.1 cm (range: 0.5 to 9.0 cm), and the most common location was the parotid (92%). Tumors showed the following: complete encapsulation (25%), involvement of the surrounding salivary gland/fat (74%), hypercellularity (26%), ≥10 pseudopods (15%), squamous metaplasia (43%), mitoses (49%), intravascular tumor deposit (n=1), close proximity to nerves (n=2), positive margin (15%), and suboptimal resection (2%). The recurrence rate was 3.4% and malignant transformation was <1%. On univariate analysis, age below 30, mitosis ≥3/10 HPFs, squamous metaplasia, hypercellularity, and suboptimal resection correlated with recurrence-free survival. On multivariate analysis, only age below 30, mitosis ≥3/10 HPF and suboptimal resection predicted recurrence. For recurrent PAs: The resected primary PAs were fragmented in 58%. Forty-eight percent of patients had subsequent recurrences, mostly within 10 years, and 1 patient developed a subsequent malignant transformation. Forty-two percent of patients received RT. On univariate analysis, only RT was associated with better outcome (P=0.033). Young age, high mitoses, and specimen integrity predicted recurrence in primary PA. Recurrent PAs are difficult to eradicate, and 48% of these recurred for the second time, mostly within 10 years.
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Affiliation(s)
- Bayan Alzumaili
- Department of Pathology, Mount Sinai Hospital, New York, NY, USA
| | - Bin Xu
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Maelle Saliba
- Department of Pathology, Colombia University, New York, NY, USA
| | - Abderhman Abuhashem
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ian Ganly
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ronald Ghossein
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Nora Katabi
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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Moura JMBDO, Gonzaga AKG, Queiroz SIML, Martins MD, Pinto LP, Souza LBD. Immunohistochemical expression of OCT4 and CD44 in major and minor salivary gland neoplasms. Braz Oral Res 2021; 35:e073. [PMID: 34161412 DOI: 10.1590/1807-3107bor-2021.vol35.0073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 10/22/2020] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to identify tumor parenchyma cells exhibiting immunohistochemical profile of stem cells by evaluating the immunoreactivity of OCT4 and CD44 in a number of cases of salivary gland neoplasms. The sample consisted of 20 pleomorphic adenomas, 20 mucoepidermoid carcinomas, and 20 adenoid cystic carcinomas located in major and minor salivary glands. The expression of OCT4 and CD44 was evaluated by the percentage of positive cells and the intensity of expression. All studied cases showed positive expression of OCT4 and CD44 and higher values than the control groups. For OCT4, luminal and non-luminal cells were immunostained in the case of pleomorphic adenomas and adenoid cystic carcinomas. Moreover, the immunoreactivity of CD44 was particularly evident in the non-luminal cells of these lesions. In mucoepidermoid carcinomas, there was immunoreactivity for both markers in squamous and intermediate cells and absence of staining in mucous cells. For both markers, a significantly higher immunostaining was verified in neoplasms located in the major salivary glands compared with lesions in minor salivary glands (p<0.001). In the total sample and in minor salivary glands, malignant neoplasms exhibited higher immunoreactivity for OCT4 than pleomorphic adenoma. A significant moderate positive correlation (r = 0.444 and p ≤ 0.001) was found between OCT4 and CD44 immunoexpression in the total sample. The high expression of OCT4 and CD44 may indicate that these proteins play an important role in identifying tumor stem cells.
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Affiliation(s)
| | | | | | | | - Leão Pereira Pinto
- Universidade Federal do Rio Grande do Norte - UFRN, Department of Dentistry, Natal, RN, Brazil
| | - Lélia Batista de Souza
- Universidade Federal do Rio Grande do Norte - UFRN, Department of Dentistry, Natal, RN, Brazil
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Li Y, Xiao N, Dai Y, Guo S, Zhang Y, Wang D, Cheng J. Comprehensive characterization of pleomorphic adenoma at intraoral unusual sites. Oral Surg Oral Med Oral Pathol Oral Radiol 2021; 133:21-27. [PMID: 34511341 DOI: 10.1016/j.oooo.2021.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/06/2021] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE The present study aimed to comprehensively characterize the epidemiologic characteristics, clinicopathologic characteristics, clinical treatments, and prognoses of pleomorphic adenoma (PA) identified at unusual intraoral sites. STUDY DESIGN Patients diagnosed with PA in oral and maxillofacial regions at our institution in the past 16 years (2005-2020) were screened from the inpatient disease registry. All data concerning patients with PA found at unusual intraoral sites (defined as intraoral locations except sublingual gland and palate) were retrieved. Previously published cases with adequate clinicopathologic data were collected from PubMed and Embase. Eligible cases were further reviewed and included for statistical analyses. RESULTS Among 1039 cases of PA diagnosed at our institution, 52 lesions were found at unusual intraoral sites. A literature review identified another 63 eligible cases from 32 articles. The upper lip was the most common sites for these lesions (n = 57), followed by buccal mucosa (n = 34), tongue (n = 8), lower lip (n = 8), and retromolar area (n = 2). Recurrence and malignant transformation after surgical resection were extremely rare for these lesions. CONCLUSIONS PA might rarely develop at uncommon intraoral sites with atypical presentations, thus complicating its early diagnosis. Surgical resection is the major therapeutic strategy for this rare entity and has a favorable prognosis.
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Affiliation(s)
- Yuanyuan Li
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, PRC
| | - Na Xiao
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, PRC
| | - Yibin Dai
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital, Nanjing Medical University, Nanjing, PRC
| | - Songsong Guo
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital, Nanjing Medical University, Nanjing, PRC
| | - Yuchao Zhang
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital, Nanjing Medical University, Nanjing, PRC
| | - Dongmiao Wang
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital, Nanjing Medical University, Nanjing, PRC
| | - Jie Cheng
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, PRC.
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Singh G, Jahan A, Yadav SK, Gupta R, Sarin N, Singh S. The Milan System for Reporting Salivary Gland Cytopathology: An outcome of retrospective application to three years' cytology data of a tertiary care hospital. Cytojournal 2021; 18:12. [PMID: 34221101 PMCID: PMC8248010 DOI: 10.25259/cytojournal_1_2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 03/04/2021] [Indexed: 12/12/2022] Open
Abstract
Objectives: Fine-needle aspiration cytology (FNAC) of the salivary gland lesions has diverse and sometimes overlapping features that pose a diagnostic challenge for the cytopathologists. The Milan System for Reporting Salivary Gland Cytopathology (MSRSGC) has been introduced to bring uniformity in the reporting of salivary gland FNAC and improve the clinic-pathologic communication resulting in better patient management. The aim of the present study was to assess the application of the MSRSGC on FNAC specimens of salivary gland lesions at a tertiary care hospital. Material and Methods: All salivary gland aspiration cytology cases along with histopathology follow-up of salivary gland lesions, wherever available, over a period of 36 months were analyzed and re-categorized according to MSRSGC into six categories and the risk of malignancy (ROM) was computed. Results: Of the 123 patients, 23 (18.69%) were classified as non-diagnostic, 39 cases (31.7%) as non-neoplastic, one (0.81%) as atypia of undetermined significance (AUS), benign neoplasm in 49 (39.8%) cases, uncertain malignant potential in two cases (1.63%), suspicious of malignancy in two cases, and malignant in seven cases (5.69%). Out of 123 cases, histopathological correlation was available in 34 cases, for which the ROM was calculated. The ROM was 0% for non-neoplastic, 11.1% for benign neoplasm, and 100% each for salivary neoplasm of uncertain neoplastic potential, and 100% for malignant categories. Conclusion: In the present study, the distribution of cases according to MSRSGC was comparable with the previous studies. The proportion of cases classified as AUS was within the goal set by MSRSGC at less than 10%. A risk-based stratification of salivary gland lesions in the form of MSRSGC is essential in the present era to guide and alert the clinician about the subsequent management plan and convey the ROM.
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Affiliation(s)
- Garima Singh
- Department of Pathology, Hindu Rao Hospital, New Delhi, India
| | - Aarzoo Jahan
- Department of Pathology, Hindu Rao Hospital, New Delhi, India
| | | | - Ruchika Gupta
- Department of Cytopathology, ICMR-National Institute of Cancer Prevention and Research, Noida, Uttar Pradesh, India
| | - Namrata Sarin
- Department of Pathology, Hindu Rao Hospital, New Delhi, India
| | - Sompal Singh
- Department of Pathology, Hindu Rao Hospital, New Delhi, India
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Zanella VG, Wagner VP, Schmidt TR, Thieme S, Correa C, Fonseca FP, Rigon P, Barra MB, Kroef RG, Vargas PA, Martins MD. Salivary gland cancer in Southern Brazil: a prognostic study of 107 cases. Med Oral Patol Oral Cir Bucal 2021; 26:e393-e403. [PMID: 33247564 PMCID: PMC8141320 DOI: 10.4317/medoral.24248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 11/02/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Salivary gland cancers (SGC) represent an uncommon group of heterogeneous tumors. We performed a retrospective survey of SGC diagnosed in a reference center for treatment of malignant tumors from the south of Brazil aiming to determine the prognostic value of demographic, clinic and pathologic features. MATERIAL AND METHODS Cases diagnosed as SGC between 2006 and 2016 were retrospectively collected. Medical records were examined to extract demographic, clinic, pathologic and follow-up information. RESULTS One-hundred and seven cases of SGC were identified. The most common SGC were mucoepidermoid carcinoma (MEC) (n = 39) followed by adenoid cystic carcinoma (AdCC) (n = 29). Among AdCCs, 55.2% of cases were classified as cribriform, 27.6% as tubular and 17.2% as solid. The tubular subtype had the highest percentage of cases with perineural invasion (p=0.01). Among MEC, 61.5% of cases were classified as low grade, 15.4% as intermediate grade and 19.9% as high grade. Low grade MEC had the lowest percentage of cases with perineural invasion (p=0.04). The 5-year survival for loco-regional control, disease-free survival (DFS) and disease-specific survival were 75%, 70% and 84%, respectively. The following features were associated with poor DFS: advanced age (p=0.03), rural residency (p=0.01), being a smoker or former smoker (p=0.01), pain (p=0.03), nodal metastasis (p<0.001), need for chemotherapy (p=0.02), neck dissection (p=0.04), perineural invasion (p=0.01), and being diagnosed with AdCC compared to MEC (p=0.02). CONCLUSIONS The clinco-demographic and pathologic features identified as prognostic factors reveal the profile of patients at increased risk of recurrence and who would benefit from closer follow-up.
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Affiliation(s)
- V-G Zanella
- Faculdade de Odontologia Universidade Federal do Rio Grande do Sul Rua Ramiro Barcelos, 2492, sala 503 CEP: 90035-003 - Santana, Porto Alegre RS, Brazil
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12
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Meirovitz A, Shouchane-Blum K, Maly A, Bersudski E, Hirshoren N, Abrams R, Popovtzer A, Orevi M, Weinberger J. The potential of somatostatin receptor 2 as a novel therapeutic target in salivary gland malignant tumors. J Cancer Res Clin Oncol 2021; 147:1335-1340. [PMID: 33598797 DOI: 10.1007/s00432-021-03538-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/15/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Treatment regimens for patients with metastatic or recurrent post-radiation, locoregional, unresectable salivary cancer are limited. An inverse correlation between somatostatin receptor 2 (SSTR2) and the proliferating marker Ki-67 in neuroendocrine tumors has enabled a treatment plan for metastatic disease, utilizing peptide receptor radionuclide therapy. Interestingly, healthy salivary glands express high levels of SSTR2. In this study, the presence of SSTR2, its correlation with Ki-67 in glandular salivary carcinomas and the clinical applicability thereof was determined. METHODS In the retrospective part of this study, 76 adequate tumor tissue specimens obtained from patients diagnosed with primary or metastatic salivary carcinomas between 1988 and 2016, were collected for tissue array and histologically classified. Immunohistochemistry was performed to determine the presence, relative expression and potential correlation of SSTR2 and Ki-67. The clinical significance of SSTR2 expression was determined by prospectively assessing 68Ga-DOTATATE uptake using PET-CT imaging, in patients diagnosed with metastatic salivary gland malignant tumors between 2015 and 2016. RESULTS Sixty-three primary cancer tumors and 14 metastatic tumors were tested. All tumor subtypes were found to express SSTR2 to some extent. The highest expression was seen in Mucoepidermoid carcinoma (MEC) tissues where the majority of specimens (86.4%) expressed SSTR2. A relatively strong immunohistochemical staining score for SSTR2 was observed in MEC, adenoid cystic carcinoma and polymorphous adenocarcinoma. Interestingly, an inverse correlation between SSTR2 and Ki-67 expressions was observed (44%) in MEC tissue. Uptake of 68Ga-DOTATATE was visualized using PET-CT imaging in 40% of patients, across metastatic MEC and ACC. All observations were found to be statistically significant. CONCLUSION This study confirms the expression of SSTR2 in glandular salivary carcinomas and an inverse correlation in expression levels between SSTR2 and Ki-67. This lays a foundation for novel treatment options in salivary metastatic cancers where SSTR2 may be a potential novel therapeutic target.
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Affiliation(s)
- Amichay Meirovitz
- Sharett Institute of Oncology, Hadassah University Hospital, P.O. Box 12000, 91120, Jerusalem, Israel.
| | - Karny Shouchane-Blum
- Hebrew University Medical School, Hadassah University Hospital, P.O. Box 12000, 91120, Jerusalem, Israel
| | - Alexander Maly
- Department of Pathology, Hadassah University Hospital, P.O. Box 12000, 91120, Jerusalem, Israel
| | - Evgeniya Bersudski
- Sharett Institute of Oncology, Hadassah University Hospital, P.O. Box 12000, 91120, Jerusalem, Israel
| | - Nir Hirshoren
- Department of Otolaryngology, Hadassah University Hospital, P.O. Box 12000, 91120, Jerusalem, Israel
| | - Ross Abrams
- Sharett Institute of Oncology, Hadassah University Hospital, P.O. Box 12000, 91120, Jerusalem, Israel
| | - Aron Popovtzer
- Sharett Institute of Oncology, Hadassah University Hospital, P.O. Box 12000, 91120, Jerusalem, Israel
| | - Marina Orevi
- Department of Nuclear Medicine, Hadassah University Hospital, P.O. Box 12000, 91120, Jerusalem, Israel
| | - Jeffrey Weinberger
- Department of Otolaryngology, Hadassah University Hospital, P.O. Box 12000, 91120, Jerusalem, Israel
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13
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Louredo BVR, Santos-Silva AR, Vargas PA, Ajudarte Lopes M, Martins MD, Guerra ENDS, Prado Ribeiro AC, Brandão TB, de Mendonça RMH, Kowalski LP, Speight PM, Khurram SA, Pérez-de-Oliveira ME. Clinicopathological analysis and survival outcomes of primary salivary gland tumors in pediatric patients: A systematic review. J Oral Pathol Med 2021; 50:435-443. [PMID: 33314344 DOI: 10.1111/jop.13151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 11/27/2020] [Accepted: 11/30/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Salivary gland tumors are a diverse group of uncommon neoplasms that are rare in pediatric patients. The aim of this study was to evaluate the clinicopathological profile and survival outcomes of pediatric patients affected by salivary gland tumors. MATERIALS AND METHODS An extensive search was carried out using the MEDLINE/PubMed, EMBASE, Scopus databases, and grey literature. The risk of bias was available in all papers included. RESULTS A total of 2,830 articles were initially retrieved with 54 remaining for data extraction, resulting in 2,937 cases. This comprised forty-five case series' and nine cohort studies. These tumors were slightly more prevalent in females (57.4%). The patients' age ranged from 0.3 to 19 years old, with a mean age of 13.3 years. Parotid was the most affected site (81.9%), and 99.2% of cases clinically exhibited a swelling. Presence of pain/tenderness was reported in 13.5% of the cases, with an average duration of 12.6 months for the appearance of symptoms. Most of the reported cases were malignant tumors (75.4%), with mucoepidermoid carcinoma the most common tumor of all tumors (44.8%), followed by pleomorphic adenoma (24.1%). Surgery alone was the leading treatment choice in 74.9% cases, and the 5-year overall survival rate of patients was 93.1%. Patients with symptoms (P = .001), local recurrence (P < .001), metastasis (P < .001), and those not undergoing surgery or surgery combined with radiotherapy (P < .001) showed lower survival rates. CONCLUSION The pediatric patients present a high frequency of malignant salivary neoplasms and a high overall survival rate.
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Affiliation(s)
| | - Alan Roger Santos-Silva
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil
| | - Pablo Agustin Vargas
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil
| | - Márcio Ajudarte Lopes
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil
| | - Manoela Domingues Martins
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil.,Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Ana Carolina Prado Ribeiro
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil.,Dental Oncology Service, São Paulo State Cancer Institute, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Thaís Bianca Brandão
- Dental Oncology Service, São Paulo State Cancer Institute, School of Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Luiz Paulo Kowalski
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil.,Department of Head and Neck Surgery and Otorhinolaryngology, AC Camargo Cancer Center, São Paulo, Brazil.,Department of Head and Neck Surgery, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Paul M Speight
- Unit of Oral & Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - Syed Ali Khurram
- Unit of Oral & Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
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14
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Santana BW, Silva LP, Serpa MS, Borges MD, Moura SR, Silveira MM, Sobral AP. Incidence and profile of benign epithelial tumors of salivary glands from a single center in Northeast of Brazil. Med Oral Patol Oral Cir Bucal 2021; 26:e108-e113. [PMID: 33247571 PMCID: PMC7806355 DOI: 10.4317/medoral.24056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 11/16/2020] [Indexed: 11/21/2022] Open
Abstract
Background Benign tumors of the salivary glands are a group of lesions with varied histopathological and clinical spectrum. The aim was to determine the incidence and clinicopathological characteristics of benign salivary gland neoplasms diagnosed between 2007 and 2016 in a single center located in northeastern Brazil.
Material and Methods Records regarding sex, age, anatomical location, histopathological subtype and treatment were retrieved, and data were analyzed using the Stata/IC software (version 12.0).
Results There were above 7,100 cases of neoplasms in the head and neck region, of which 403 corresponded to salivary gland neoplasms. Of these, 238 (59%) were benign, being pleomorphic adenoma (PA) the most frequent neoplasm (n=178; 74.8%), followed by Warthin's tumor (WT) (n=23; 9.7%). Overall, most cases occurred in females (n=136; 57.1%) and age ranged from 11 to 83 years. The parotid gland (n=188; 79%) was the most common anatomical site, and all patients were treated by surgical excision. Of the cases diagnosed as PA, malignant transformation to carcinoma ex-pleomorphic adenoma (CAEXPA) occurred in 7 (3.9%) cases.
Conclusions The present study confirmed the clinical and demographic profile of benign salivary gland neoplasms, which contributes to the continuous knowledge of current data about these lesions. Key words:Salivary gland, benign neoplasms, epidemiology.
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Affiliation(s)
- B-W Santana
- Postgraduate Program in Dentistry, School of Dentistry, University of Pernambuco Av. General. Newton Cavalcanti, 1650 - Tabatinga Camaragibe, Zip code: 54756-220, Recife/PE, Brazil
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15
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Cunha JLS, Hernandez-Guerrero JC, de Almeida OP, Soares CD, Mosqueda-Taylor A. Salivary Gland Tumors: A Retrospective Study of 164 Cases from a Single Private Practice Service in Mexico and Literature Review. Head Neck Pathol 2020; 15:523-531. [PMID: 33044721 PMCID: PMC8134594 DOI: 10.1007/s12105-020-01231-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/01/2020] [Indexed: 12/31/2022]
Abstract
Salivary gland tumors (SGT) represent an uncommon heterogeneous group of tumors with complex clinical and pathological characteristics. The prevalence of these lesions varies between studies but has been estimated between 3 and 6% of all tumors in the head and neck region. The present study aimed to evaluate the distribution and demographic findings of salivary gland tumors diagnosed in an oral pathology service in Mexico. A retrospective descriptive cross-sectional study was performed. A total of 164 cases of SGT from a private oral pathology service were diagnosed between 2000 and 2019 in Mexico City. All cases were reviewed histologically, and demographic data and histopathological diagnoses were collected. A total of 110 (67.1%) tumors were benign, and 54 (32.9%) were malignant. The majority of patients were female (n = 100, 61.0%) with an overall female:male ratio of 1.6:1. The minor salivary glands were affected more than the major salivary glands (68.9% vs. 25.6%). The palate (n = 67, 40.9%) was the most commonly affected site, followed by the parotid gland (n = 37, 22.6%), lips (n = 16, 9.8%), and buccal mucosa (n = 14, 8.5%). Pleomorphic adenoma (n = 88; 80.0%) and mucoepidermoid carcinoma (n = 16, 29.6%) were the most frequent benign and malignant tumors, respectively. The general features of SGT from the studied Mexican population shared some similarities and differences compared to previously reported series from various parts of the world.
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Affiliation(s)
- John Lennon Silva Cunha
- grid.411087.b0000 0001 0723 2494Oral Pathology Section, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira 901, P.O. Box. 52, Piracicaba, São Paulo 1314-903 Brazil
| | - Juan Carlos Hernandez-Guerrero
- grid.9486.30000 0001 2159 0001Facultad de Odontología, Laboratory of Immunology, Universidad Nacional Autónoma de México (UNAM), México City, México
| | - Oslei Paes de Almeida
- grid.411087.b0000 0001 0723 2494Oral Pathology Section, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira 901, P.O. Box. 52, Piracicaba, São Paulo 1314-903 Brazil
| | - Ciro Dantas Soares
- grid.411087.b0000 0001 0723 2494Oral Pathology Section, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira 901, P.O. Box. 52, Piracicaba, São Paulo 1314-903 Brazil
| | - Adalberto Mosqueda-Taylor
- grid.7220.70000 0001 2157 0393Facultad de Odontología, Universidad Autónoma Metropolitana Xochimilco (UAM), México City, México
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16
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Parkins GE, Blankson PK, Affum A, Boamah MO, Sackeyfio J. Salivary gland neoplasms: A 10-year review of a major referral center in Ghana. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 131:161-165. [PMID: 32981870 DOI: 10.1016/j.oooo.2020.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 06/28/2020] [Accepted: 08/09/2020] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The aim of this study was to describe the clinicopathologic features of salivary gland tumors (SGTs) that were managed at a major referral center in Ghana. STUDY DESIGN This was a retrospective study of all histologically diagnosed and managed Ghanaian patients with SGTs during the period January 2008 to December 2017. Information collected included age, gender, affected gland, presenting symptom, treatment modality, histologic diagnosis, and complications. Descriptive summaries of variables were generated. The χ2 test with Fisher's test was used to compare categorical variables with subsequent testing of association. RESULTS The study included 116 patients, with 49 males (42.2%) and 67 females (57.8%), representing a ratio of 1:1.4. There were 82 (70.7%) benign SGTs and 34 (29.3%) malignant SGTs. The most common benign SGT was pleomorphic adenoma, which accounted for 62.1% of all SGTs. Malignant SGTs occurred more in older people, and the occurrence of SGTs was significantly at a lower age in males compared with females. CONCLUSIONS Although the general pattern of SGTs did not seem to differ significantly in comparison with the findings of a review performed 10 years earlier, the findings of this study could inform hypotheses generation for future studies to explore the risk factors and associations peculiar to the Ghanaian environment.
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Affiliation(s)
- Grace E Parkins
- Oral and Maxillofacial Surgery Unit, Korle-Bu Teaching Hospital, Accra, Ghana; Department of Oral and Maxillofacial Surgery, University of Ghana Dental School, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Paa-Kwesi Blankson
- Oral and Maxillofacial Surgery Unit, Korle-Bu Teaching Hospital, Accra, Ghana; Department of Oral and Maxillofacial Surgery, University of Ghana Dental School, College of Health Sciences, University of Ghana, Accra, Ghana.
| | - Albert Affum
- Department of Oral and Maxillofacial Surgery, University of Ghana Dental School, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Matthew Owusu Boamah
- Oral and Maxillofacial Surgery Unit, Korle-Bu Teaching Hospital, Accra, Ghana; Department of Oral and Maxillofacial Surgery, University of Ghana Dental School, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Josephine Sackeyfio
- Department of Community and Preventive Dentistry, University of Ghana Dental School, College of Health Sciences, University of Ghana, Accra, Ghana
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Cordeiro MS, de Freitas Filho SAJ, Servato JPS, Eisenberg ALA, Dias FL, de Faria PR, Loyola AM, Cardoso SV. A retrospective study of 30 basal cell adenomas of the salivary gland in a Brazilian population and literature review. Eur Arch Otorhinolaryngol 2020; 278:2447-2454. [PMID: 32886182 DOI: 10.1007/s00405-020-06331-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 08/28/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE The present study aimed to provide the clinicopathological data of Brazilian patients with basal cell adenoma (BCA). METHODS Records of BCA cases were retrospectively gathered from the Brazilian National Cancer Institute database between 1996 and 2006. All cases were histopathologically reviewed, and the clinicopathological data were collected from the patients' medical files. In addition, an English literature review about this tumor is also presented. RESULTS Of 1127 salivary gland tumors identified, 30 were BCAs (2.7%). Women were more affected than men (70.0% vs. 30.0%), and the majority (60.0%) were elderly (> 65 years old). The parotid gland was the most frequent location affected (93.3%), followed by the upper lip (3.3%) and submandibular gland (3.3%). Fine-needle aspiration was the main procedure applied to establish a preoperative diagnosis of tumor; however, the results were not always consistent. Histopathologically, the trabecular pattern was the most common type seen (50.0%) among our BCA samples. Most patients underwent superficial or partial parotidectomy. Frey's syndrome was reported only in one case during the follow-up. No recurrence was noted in the present series. The literature review revealed a total of 213 reported cases of BCA in the period investigated. CONCLUSIONS This is the first case series of BCA reported in Brazil. As occurred in other previously reported series, the clinicopathological data of BCAs are similar and confirm that this type of tumor is rare, develops predominantly in the parotid gland, frequently affects older women, has an indolent behavior, and the affected patients have an excellent prognosis.
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Affiliation(s)
- Mirna Scalon Cordeiro
- Area of Pathology, School of Dentistry, Federal University of Uberlândia, Av. Pará, 1720, Campus Umuarama, Uberlândia, MG, CEP 38400-902, Brazil
| | | | | | | | - Fernando Luiz Dias
- Head and Neck Surgery Service, Brazilian National Cancer Institute (INCA), Rio de Janeiro, RJ, Brazil
| | - Paulo Rogério de Faria
- Department of Cell Biology, Histology and Embryology, Biomedical Science Institute, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Adriano Mota Loyola
- Area of Pathology, School of Dentistry, Federal University of Uberlândia, Av. Pará, 1720, Campus Umuarama, Uberlândia, MG, CEP 38400-902, Brazil
| | - Sérgio Vitorino Cardoso
- Area of Pathology, School of Dentistry, Federal University of Uberlândia, Av. Pará, 1720, Campus Umuarama, Uberlândia, MG, CEP 38400-902, Brazil.
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18
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Filho OVDO, Rêgo TJRD, Mendes FHDO, Dantas TS, Cunha MDPSS, Malta CEN, Silva PGDB, Sousa FB. Prognostic factors and overall survival in a 15-year followup of patients with malignant salivary gland tumors: a retrospective analysis of 193 patients. Braz J Otorhinolaryngol 2020; 88:365-374. [PMID: 32855094 PMCID: PMC9422552 DOI: 10.1016/j.bjorl.2020.06.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/17/2020] [Accepted: 06/24/2020] [Indexed: 01/17/2023] Open
Abstract
INTRODUCTION Malignant tumors of the salivary glands are uncommon pathological entities, representing less than 5% of head and neck neoplasms. The prognosis of patients with malignant tumors of the salivary glands is highly variable and certain clinical factors can significantly influence overall survival. OBJECTIVE To analyze the clinicopathologic and sociodemographic characteristics that influence survival in patients with malignant tumors of the salivary glands METHODS: This retrospective study analyzed sex, age, race, education level, tumor location, tumor size, lymph node involvement, distant metastasis, margin status, treatment type, marital status, method of health care access and 15-year overall survival in 193 patients with malignant tumors of the salivary glands. The X², log-rank Mantel-Cox, multinomial regression and Cox logistic regression tests were used (SPSS 20.0,p < 0.05). RESULTS The most common histological types were adenocarcinoma (32.1%), adenoid cystic carcinoma (31.1%) and mucoepidermoid carcinoma (18.7%). The 15-year overall survival rate was 67.4%, with a mean of 116±6 months. The univariate analysis revealed that male sex (p = 0.026), age > 50 years (p=0.001), referral origin from the public health system (p=0.011), T stage (p= 0.007), M stage (p< 0.001), clinical stage (p< 0.001), compromised surgical margins (p= 0.013), and chemotherapy (p< 0.001) were associated with a poor prognosis. Multivariate analyses also showed that age > 50 years was independently associated with a poor prognosis (p= 0.016). The level of education was the only factor more prevalent in older patients (p= 0.011). CONCLUSIONS Patients with malignant tumors of the salivary glands older than 50 years have a worse prognosis and an independent association with a low education level.
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Affiliation(s)
- Osias Vieira de Oliveira Filho
- Universidade Federal do Ceará, Faculdade de Farmácia, Odontologia e Enfermagem, Divisão de Patologia Oral, Fortaleza, CE, Brazil
| | | | | | - Thinali Sousa Dantas
- Universidade Federal do Ceará, Faculdade de Farmácia, Odontologia e Enfermagem, Divisão de Patologia Oral, Fortaleza, CE, Brazil; Centro Universitário Christus (Unichristus), Departamento de Odontologia, Fortaleza, CE, Brazil
| | | | - Cássia Emanuella Nóbrega Malta
- Universidade Federal do Ceará, Faculdade de Farmácia, Odontologia e Enfermagem, Divisão de Patologia Oral, Fortaleza, CE, Brazil
| | - Paulo Goberlânio de Barros Silva
- Universidade Federal do Ceará, Faculdade de Farmácia, Odontologia e Enfermagem, Divisão de Patologia Oral, Fortaleza, CE, Brazil; Centro Universitário Christus (Unichristus), Departamento de Odontologia, Fortaleza, CE, Brazil.
| | - Fabrício Bitu Sousa
- Universidade Federal do Ceará, Faculdade de Farmácia, Odontologia e Enfermagem, Divisão de Patologia Oral, Fortaleza, CE, Brazil; Centro Universitário Christus (Unichristus), Departamento de Odontologia, Fortaleza, CE, Brazil
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Cunha JL, Coimbra AC, Silva JV, Nascimento IS, Andrade ME, Oliveira CR, Almeida OP, Soares CD, Sousa SF, Albuquerque-Júnior RL. Epidemiologic analysis of salivary gland tumors over a 10-years period diagnosed in a northeast Brazilian population. Med Oral Patol Oral Cir Bucal 2020; 25:e516-e522. [PMID: 32388524 PMCID: PMC7338061 DOI: 10.4317/medoral.23532] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 02/24/2020] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Salivary gland tumors (SGT) correspond to a heterogeneous group of lesions with variable biological behavior. The present study aimed to determine the distribution and demographic findings of salivary gland neoplasms in a northeast Brazilian population. MATERIAL AND METHODS A retrospective descriptive cross-sectional study was performed. A total of 588 cases of SGT were diagnosed between 2006 and 2016 of 4 pathology services in the state of Sergipe, Brazil. All cases were reviewed, and data such as sex, age, anatomical location, and histopathological diagnosis were collected. RESULTS A total of 470 (79.9%) tumors were benign and 118 (20.1%) were malignant. The majority of the patients were females (n=328, 55.8%) with an overall female:male ratio of 1.2:1. The major salivary glands were affected more than the minor glands (69.5% vs. 30.5%). Pleomorphic adenoma (n=419, 71.3%) and mucoepidermoid carcinoma (n=29, 4.9%) were the most frequent benign and malignant tumors, respectively. In addition, both benign and malignant tumors occurred more frequently in the parotid gland (n=300, 51%, p<0.05). CONCLUSIONS The epidemiologic profile and clinical characteristics of SGT were similar to those described in other countries and other regions of Brazil. Epidemiological studies of SGT help to understand their clinical and pathological features and are essential to establish the proper management and prognosis.
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Affiliation(s)
- J-L Cunha
- Laboratory of Morphology and Experimental Pathology Institute of Technology and Research, Tiradentes University Av. Murilo Dantas, 300, Farolândia, Aracaju, SE 49032-490, Brazil
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Reinheimer A, Vieira DSC, Cordeiro MMR, Rivero ERC. Retrospective study of 124 cases of salivary gland tumors and literature review. J Clin Exp Dent 2019; 11:e1025-e1032. [PMID: 31700577 PMCID: PMC6825733 DOI: 10.4317/jced.55685] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 10/07/2019] [Indexed: 11/05/2022] Open
Abstract
Background Salivary gland tumors are a rare and morphologically diverse group of lesions and their frequency is still unknown in several parts of the world. The knowledge of its population characteristics contributes to a better understanding of its etiopathogenesis. Objectives: This study investigated the frequency of salivary gland tumors in a region of southern Brazil and compared these data in a literature review. Material and Methods A retrospective study was conducted of salivary gland tumors diagnosed at two pathology centers from 1995 to 2016. Patient age and gender, tumor site and frequency, histopathological diagnosis, and symptomatology were evaluated. Chi-squared tests were used to assess the associations between variables. To compare our data, we also conducted a literature review of publications in the PubMed and LILACS databases of retrospective studies of salivary gland tumors. Results A total of 124 salivary gland tumor cases was identified, 81 (65.3%) of which were classified as benign and 43 (34.6%) as malignant. Most tumors occurred in the parotid gland (57.2%). Pleomorphic adenoma was the most common tumor (59.6%), followed by adenocarcinoma not otherwise specified (8.8%). The tumors occurred more often in women (54.8%) than in men (45.2%). Malignant tumors were associated with pain in 31.4% of cases (p<0.05). The literature review included 35 articles from different countries. Women were most affected, with a mean age of 41.7 years. The most common benign tumor was pleomorphic adenoma (48.2%) and the most common malignant tumor was mucoepidermoid carcinoma (8.7%). Conclusions The results of the present study showed that salivary gland tumors are rare. The parotid gland is the most common location and pleomorphic adenoma are the most frequent lesions. The malignant tumors presented as several histological types and the incidence was variable globally. Key words:Salivary gland neoplasms, salivary gland diseases, oral surgery, epidemiology.
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Affiliation(s)
- Angélica Reinheimer
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil
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21
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Ju WT, Zhao TC, Liu Y, Tan YR, Dong MJ, Sun Q, Wang LZ, Li J, Zhong LP. Computed tomographic features of adenoid cystic carcinoma in the palate. Cancer Imaging 2019; 19:3. [PMID: 30704527 PMCID: PMC6357373 DOI: 10.1186/s40644-019-0190-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 01/23/2019] [Indexed: 02/07/2023] Open
Abstract
Background To evaluate the computed tomographic features and create a prediction model for clinical diagnosis of adenoid cystic carcinoma (ACC) in the palate with intact mucosa. Methods From March 2016 to May 2018, 102 patients with palatal tumors and intact mucosa, including 28 patients with a pathological diagnosis of ACC after surgery, were enrolled in this study. The patients’ clinical symptoms, computed tomographic features and pathological diagnoses were recorded and analyzed. Independent predictors of ACC were determined by using univariate analysis and multivariate logistic regression, and the discrimination and calibration of the prediction model was evaluated, and internal validation was performed. Results Univariate analysis of patients showed that ACC patients were more likely than non-ACC patients to be older (P = 0.019); to have palatine bone destruction (P<0.001) and greater palatine foramen (GPF) enlargement (P<0.001); to have involvement of the pterygopalatine fossa (P<0.001), foramen rotundum (P<0.001), nasal cavity (P<0.001) and maxillary bone (P<0.001); and to have numbness (P = 0.007) and pain (P<0.001). Multivariate logistic analysis showed that age and GPF enlargement were independent predictors of ACC in palatal tumors. The diagnostic prediction model showed good discrimination and calibration, as evaluated by the area under the receiver operating characteristic curve (0.98) and the Hosmer-Lemeshow goodness-of-fit test (P = 0.927). Conclusions The palate ACC prediction model based on age and GPF enlargement shows excellent discrimination with no evidence of poor calibration. Older patients with palatal tumors and intact mucosa should be considered for ACC when they have GPF enlargement. Electronic supplementary material The online version of this article (10.1186/s40644-019-0190-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wu-Tong Ju
- Department of Oral and Maxillofacial-Head and Neck Oncology, Ninth Peoples Hospital, College of Stomatology Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Tong-Chao Zhao
- Department of Oral and Maxillofacial-Head and Neck Oncology, Ninth Peoples Hospital, College of Stomatology Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Ying Liu
- Department of Oral and Maxillofacial-Head and Neck Oncology, Ninth Peoples Hospital, College of Stomatology Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Yi-Ran Tan
- Department of Oral and Maxillofacial-Head and Neck Oncology, Ninth Peoples Hospital, College of Stomatology Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Min-Jun Dong
- Department of Oral Radiology, Ninth Peoples Hospital Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China.
| | - Qi Sun
- Department of Oral Radiology, Ninth Peoples Hospital Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Li-Zhen Wang
- Department of Oral Pathology, Ninth Peoples Hospital, College of Stomatology Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases Key Laboratory of Stomatology, Shanghai, China
| | - Jiang Li
- Department of Oral Pathology, Ninth Peoples Hospital, College of Stomatology Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases Key Laboratory of Stomatology, Shanghai, China
| | - Lai-Ping Zhong
- Department of Oral and Maxillofacial-Head and Neck Oncology, Ninth Peoples Hospital, College of Stomatology Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China.
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Salivary gland tumors in a Brazilian population: A 20-year retrospective and multicentric study of 2292 cases. J Craniomaxillofac Surg 2018; 46:2227-2233. [DOI: 10.1016/j.jcms.2018.09.028] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 07/30/2018] [Accepted: 09/24/2018] [Indexed: 11/24/2022] Open
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Shen SY, Wang WH, Liang R, Pan GQ, Qian YM. Clinicopathologic analysis of 2736 salivary gland cases over a 11-year period in Southwest China. Acta Otolaryngol 2018; 138:746-749. [PMID: 29656683 DOI: 10.1080/00016489.2018.1455108] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To investigate the epidemiological and clinicopathological characteristics of salivary gland tumors in southwest China in order to provide data for clinical diagnosis and other similar research. METHODS Between March 2007 and December 2017, 2736 patients with salivary gland tumors were recruited, the clinical and pathological data were retrospectively analyzed. RESULTS A total of 2736 patients had a ratio of males to females of about 1.02:1. The ratio of benign to malignant tumors was 3.46:1. Pleomorphic adenoma and adenoid cystic carcinoma had 50.8% and 7.2%, respectively. About 65.4% tumors occurred in the parotid gland. There was no significant difference between the tumor in the left or right parotid and the use of cell phones. There were significant differences between gender and both the characteristics and locations of salivary gland tumors (p < .05). There were also significant differences between the pathological characteristics and location of the salivary gland (p < .05). CONCLUSIONS The salivary gland benign and malignant tumors were more common in pleomorphic adenoma and adenoid cystic carcinoma, most occurred in the parotid gland. The minor gland tumors are lower than other parts of China. The incidence of parotid gland tumors is not related to the use of cell phones.
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Affiliation(s)
- S. Y. Shen
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital of Kunming Medical University, Kunming, China
| | - W. H. Wang
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital of Kunming Medical University, Kunming, China
| | - R. Liang
- Department of Pathology, First People’s Hospital of Yunnan Province, Kunming, China
| | - G. Q. Pan
- Department of Pathology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Y. M. Qian
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital of Kunming Medical University, Kunming, China
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de Moraes JK, Wagner VP, Fonseca FP, Vargas PA, de Farias CB, Roesler R, Martins MD. Uncovering the role of brain-derived neurotrophic factor/tyrosine kinase receptor B signaling in head and neck malignancies. J Oral Pathol Med 2017. [PMID: 28650560 DOI: 10.1111/jop.12611] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) is a member of the neurotrophin family of growth factors that was first known as responsible for sustain the growth, function, and plasticity of neural cells. BDNF exerts its effects by binding to the tyrosine kinase receptor B (TrkB). The BDNF/TrkB axis has been reported to be overexpressed in several neurogenic and non-neurogenic tumors. Its higher expression was associated with a poor prognosis to patients affected by different human malignancies, tumor growth, invasion, and metastasis; epithelial-mesenchymal transition and resistance to chemotherapy. BDNF/TrkB represent promising targets to the development of novel anticancer therapies. Some clinical trials are currently evaluating the efficacy of Trk protein-target drugs in different types of solid tumors. To date, few groups have evaluated the DNF/TrkB pathway in head and neck malignancies. The aims of this study were to review the literature concerning the role of BDNF/TrkB activation in head and neck squamous cell carcinoma and malignant salivary gland tumors and to discuss future perspectives of BDNF/TrkB-target therapy.
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Affiliation(s)
- Juliana Kern de Moraes
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Vivian Petersen Wagner
- Department of Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Felipe Paiva Fonseca
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Pablo Agustin Vargas
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Caroline Brunetto de Farias
- Cancer and Neurobiology Laboratory, Experimental Research Center, Porto Alegre Clinical Hospital, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Children's Cancer Institute, Porto Alegre, Brazil
| | - Rafael Roesler
- Cancer and Neurobiology Laboratory, Experimental Research Center, Porto Alegre Clinical Hospital, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Manoela Domingues Martins
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.,Department of Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Experimental Pathology Unit, Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil
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Chen W, Liu NN, Zhang SL. The cross-contaminated cell lines of adenoid cystic carcinoma: A crucial concern. ACTA ACUST UNITED AC 2017. [DOI: 10.4103/2468-5585.200513] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Lopes MLDDS, Barroso KMA, Henriques ÁCG, dos Santos JN, Martins MD, de Souza LB. Pleomorphic adenomas of the salivary glands: retrospective multicentric study of 130 cases with emphasis on histopathological features. Eur Arch Otorhinolaryngol 2016; 274:543-551. [DOI: 10.1007/s00405-016-4253-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 08/08/2016] [Indexed: 12/12/2022]
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