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430 results on '"Rivero, Elena"'

1. Clinicopathological Features of Metastasis to the Oral and Maxillofacial Region—Multicenter Study

Author

Kirschnick, Laura Borges, Schuch, Lauren Frenzel, Gondak, Rogério, Rivero, Elena Riet Correa, Gomes, Ana Paula Neutzling, Etges, Adriana, Tarquinio, Sandra Beatriz Chaves, Mesquita, Ricardo Alves, Caldeira, Patrícia Carlos, da Costa, Adriana Aparecida Silva, Mendonça, Elismauro Francisco, dos Santos, Jean Nunes, Smit, Chané, Robinson, Liam, Tager, Elena María José Román, Mosqueda-Taylor, Adalberto, Pontes, Hélder Antônio Rebelo, de Andrade, Bruno Augusto Benevenuto, Fonseca, Thamyres Campos, Abrahão, Aline Corrêa, Agostini, Michelle, Romañach, Mário José, Alves, Fábio Abreu, Jaguar, Graziella Chagas, de Mendonça, Nathalia Félix, Pinto, Mariana Bitu Ramos, da Silva, Luan César, Lopes, Márcio Ajudarte, Vargas, Pablo Agustin, van Heerden, Willie, Abreu, Lucas Guimarães, Martins, Manoela Domingues, and Vasconcelos, Ana Carolina Uchoa

Published
2023
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2. A Pathology-Based Machine Learning Method to Assist in Epithelial Dysplasia Diagnosis

Author

da Rocha, Karoline, Bermudez, José C. M., Rivero, Elena R. C., and Costa, Márcio H.

Subjects
Electrical Engineering and Systems Science - Image and Video Processing, Computer Science - Computer Vision and Pattern Recognition, Computer Science - Machine Learning
Abstract

The Epithelial Dysplasia (ED) is a tissue alteration commonly present in lesions preceding oral cancer, being its presence one of the most important factors in the progression toward carcinoma. This study proposes a method to design a low computational cost classification system to support the detection of dysplastic epithelia, contributing to reduce the variability of pathologist assessments. We employ a multilayer artificial neural network (MLP-ANN) and defining the regions of the epithelium to be assessed based on the knowledge of the pathologist. The performance of the proposed solution was statistically evaluated. The implemented MLP-ANN presented an average accuracy of 87%, with a variability much inferior to that obtained from three trained evaluators. Moreover, the proposed solution led to results which are very close to those obtained using a convolutional neural network (CNN) implemented by transfer learning, with 100 times less computational complexity. In conclusion, our results show that a simple neural network structure can lead to a performance equivalent to that of much more complex structures, which are routinely used in the literature.

Published
2022

4. ATYPICAL HISTOPATHOLOGICAL PRESENTATION OF SYPHILIS.

Author

LAUREANO, Natalia Koerich, primary, ANTONINI, Fernando, additional, MARASCHIN, Bruna Jalfim, additional, SILVA, Viviane Palmeira DA, additional, RIVERO, Elena Riet Correa, additional, de ALBUQUERQUE-JUNIOR, Ricardo Luiz Cavalcanti, additional, and DA SILVA, Alessandra Dutra, additional

Published
2024
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9. ADENOMATOID ODONTOGENIC TUMOR: A CASE REPORT.

Author

FRANCISCONI, Nicolle da Silva, primary, SILVA, Bruna Bernardino, additional, ARAÚJO, Lara Thaís Coelho, additional, MARIANI, Taimara Rubia, additional, GIL, Luiz Fernando, additional, and RIVERO, Elena Riet Correa, additional

Published
2024
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11. ODONTOGENIC MYXOMA IN THE MAXILLA: A CASE REPORT.

Author

SALAZAR, Yasmin, primary, CRUZ, Morgana Callai, additional, CORRÊA, Allana Barbosa, additional, SANTOS, Thiago de Santana, additional, RIVERO, Elena Riet Correa, additional, GONDAK, Rogério de Oliveira, additional, and de ALBUQUERQUE-JÚNIOR, Ricardo Luiz Cavalcanti, additional

Published
2024
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16. Bacterial cellulose matrix and acellular dermal matrix seeded with fibroblasts grown in platelet-rich plasma supplemented medium, compared to free gingival grafts: a randomized animal study

Author

Prado, Abraão Moratelli, primary, Ferreira, Cimara Fortes, additional, Porto, Luismar Marques, additional, Rivero, Elena Riet Correa, additional, de Souza Magini, Ricardo, additional, Benfatti, Cesar Augusto Magalhães, additional, and Rodriguez-Ivich, Jair, additional

Published
2024
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17. Tomographic and Histologic Analysis of Different Socket Sealing Approaches for Alveolar Ridge Preservation: A Randomized Controlled Pilot Clinical Trial.

Author

Magrin, Gabriel Leonardo, Scarduelli, Letícia Daros, Correa Rivero, Elena Riet, de Souza Magini, Ricardo, Gruber, Reinhard, and Magalhães Benfatti, Cesar Augusto

Subjects
MAXILLA surgery, TISSUE analysis, ALVEOLAR process surgery, OPERATIVE dentistry, DENTAL implants, WOUND healing, COLLAGEN, BONE resorption, PERIODONTITIS, MOLARS, ALVEOLAR process, DENTAL extraction, BIOMEDICAL materials, TREATMENT effectiveness, RANDOMIZED controlled trials, AUTOGRAFTS, HISTOLOGICAL techniques, DESCRIPTIVE statistics, STATISTICAL sampling
Abstract

Purpose: To compare different socket sealing approaches for alveolar ridge preservation and assess the dimensional changes and histologic characteristics of soft and hard tissues in a 4- to 6-month period. Material and Methods: A total of 22 patients with indicated single-tooth extraction in the maxillary nonmolar region were eligible for this study. After CBCT scanning and minimally traumatic tooth extraction, the alveolar sockets were filled with demineralized bovine bone mineral with collagen (DBBM-C) in patients from all groups except for those in the control group. Patients were divided into groups for socket sealing as follows: unsealed/spontaneous healing (control; n = 6), collagen matrix (n = 5), collagen membrane (n = 5), and autogenous graft (n = 6). A second CBCT scan was taken 4 to 6 months after extraction, and a trephine biopsy of soft and hard tissues was collected during implant placement. Tomographic dimensional changes were compared between groups. Intragroup tomographic evaluation and histological analysis were also performed. Results: Analysis of dimensional changes did not detect differences between the socket sealing groups (P > .05). In an intragroup evaluation, the height of the buccal bone and cross-sectional area of the alveolar ridge were significantly lower 4 to 6 months after extraction for the control group (P = .031). Histological analysis revealed that the socket sealing approach had no impact on hard and soft tissue formation. Conclusion: The data from the present study suggest that socket sealing with a collagen matrix, a collagen membrane exposed to the oral cavity, or an autogenous punch graft had no difference in the effects on volumetric maintenance and tissue formation in a period of 4 to 6 months. [ABSTRACT FROM AUTHOR]

Published
2023
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19. Microvascular density analysis and histological parameters of oral cancer progression.

Author

Batistella, Elis Angela, Miguel, Andressa Fernanda Paza, Nascimento, Nicole Lonni, Horta, Martinho Campolina Rebello, Vieira, Daniella Serafin Couto, and Rivero, Elena Riet Correa

Subjects
SQUAMOUS cell carcinoma, LYMPHATICS, VASCULAR endothelial growth factors, MOUTH tumors, RESEARCH funding, SEX distribution, GLYCOPROTEINS, TUMOR markers, CARDIOVASCULAR system physiology, HISTOLOGICAL techniques, DISEASE progression
Abstract

Objectives: This study aimed to investigate the role of blood and lymphatic microvascular density in the progression of oral squamous cell carcinoma (OSCC). Materials and Methods: The sample was composed of 54 cases of OSCC. The immunoexpression to anti‐alpha‐smooth muscle actin (α‐SMA) and to anti‐endoglin (CD105) was used to determine the microvessel density (MVD); anti‐podoplanin (D2‐40) was used to assess the lymphatic vessel density (LVD); vascular endothelial growth factor (VEGF) was evaluated in malignant cells. The histological differentiation, the worst pattern of invasion (WPOI), tumour thickness and tumour budding (TB) intensity were assessed using haematoxylin–eosin and anti‐pan‐cytokeratin (AE1/AE3). Patients' age and sex, TNM classification and follow‐up time were collected from the medical records. Results: MVD markers presented a similar pattern of expression in blood vessels. However, only α‐SMA + MVD was significantly higher among women and in tumours ≤4 cm. LVD was lower in tumours with lymph node metastasis. Regarding the histological parameters, high TB intensity was associated with histological differentiation, advanced clinical stage, greater tumour thickness and reduced disease‐free survival. No difference was found in VEGF. Conclusions: The decrease in OSCC LVD could be related to pathological node involvement, whereas high TB intensity could indicate OSCC progression and worse patient outcomes. [ABSTRACT FROM AUTHOR]

Published
2024
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32. SARCOMATOID CARCINOMA: A CASE REPORT

Author

Gama-Cuellar, Ana Guadalupe, primary, Dias, Otávio Francisco, additional, Marins, Leandro, additional, Gondak, Rogério, additional, and Rivero, Elena Riet Correa, additional

Published
2022
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37. Evaluation of two classification systems for oral epithelial dysplasia.

Author

Embaló, Bubacar, Miguel, Andressa Fernanda Paza, Konrath, Andrea Cristina, Modolo, Filipe, and Rivero, Elena Riet Correa

Subjects
MOUTH tumors, RESEARCH evaluation, CONFIDENCE intervals, CHI-squared test, DESCRIPTIVE statistics, RESEARCH funding, TUMOR markers, ODDS ratio
Abstract

The article presents the discussion on evaluating the two most used classification systems for OED. Topics include main factors involved in the progression of OPMD to cancer being the presence of oral epithelial dysplasia (OED); and increasing nuclear–cytoplasmic ratio, irregular epithelial stratification, increasing number and size of nucleoli, keratin pearls within rete ridges.

Published
2023
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38. Impact of the COVID‐19 pandemic on public University laboratories of oral and maxillofacial pathology: A Brazilian multicenter study

Author

Caldeira, Patrícia Carlos, primary, Schuch, Lauren Frenzel, additional, Tavares, Thalita Soares, additional, Santos‐Silva, Alan Roger, additional, Vargas, Pablo Agustin, additional, Pérez‐de‐Oliveira, Maria Eduarda, additional, de Almeida, Oslei Paes, additional, de Souza, Lélia Batista, additional, Gonzaga, Amanda Katarinny Goes, additional, Mendonça, Elismauro Francisco, additional, Sousa‐Neto, Sebastião Silvério, additional, Rivero, Elena Riet Correa, additional, Modolo, Filipe, additional, dos Santos, Jean Nunes, additional, Manieri, Patrícia Rubia, additional, Nonaka, Cassiano Francisco Weege, additional, Alves, Pollianna Muniz, additional, Libório‐Kimura, Tatiana Nayara, additional, Mendes, Tássia Caroline da Costa, additional, Etges, Adriana, additional, Tarquinio, Sandra Beatriz Chaves, additional, Gomes, Ana Paula Neutzling, additional, Abreu, Lucas Guimarães, additional, and Vasconcelos, Ana Carolina Uchoa, additional

Published
2022
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41. Author response for 'Impact of the COVID-19 pandemic on public University laboratories of oral and maxillofacial pathology: A Brazilian multicenter study'

Author

null Caldeira, Patricia Carlos, null Schuch, Lauren Frenzel, null Tavares, Thalita Soares, null Santos-Silva, Alan Roger, null Vargas, Pablo Agustin, null Perez-de-Oliveira, Maria Eduarda, null de Almeida, Oslei Paes, null de Souza, Lelia Batista, null Goes Gonzaga, Amanda Katarinny, null Mendonca, Elismauro Francisco, null Sousa-Neto, Sebastiao Silverio, null Correa Rivero, Elena Riet, null Modolo, Filipe, null dos Santos, Jean Nunes, null Manieri, Patricia Rubia, null Weege Nonaka, Cassiano Francisco, null Alves, Pollianna Muniz, null Liborio-Kimura, Tatiana Nayara, null da Costa Mendes, Tassia Caroline, null Etges, Adriana, null Chaves Tarquinio, Sandra Beatriz, null Neutzling Gomes, Ana Paula, null Abreu, Lucas Guimaraes, and null Uchoa Vasconcelos, Ana Carolina

Published
2021

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