Thesis (M.S.)--University of Michigan, 1974.

MDent, Faculty of Health Sciences, Universiyt of the Witwatersrand / Introduction: HIV associated parotid lymphoepithelial lesions in children are not well documented. Most studies have concentrated on the adult population. Objectives: The present study aimed to document the disease, its risk factors and anti-retroviral treatment outcome in children. Materials and methods: The study was conducted at 2 HIV and AIDS facilities weekly over a 6 month period. “Parotid swellings” in children below 13 years were analysed. A retrospective medical chart review was conducted. Results: Seventy-one children were included; 47 with swelling (Group 1) and 24 without swelling (Group 2). Thirty-nine had parotid swelling of 1or both glands, 6 had submandibular and parotid swelling and 2 with only submandibular swelling. Twenty-six children in Group 1 were receiving HAART, 19 reported a reduction in size of lesion, 6 reported no effect and only 1 had the lesion after 11 months of HAART. Conclusion: Parotid lymphoid proliferation in children is more common than previously reported. The prevalence of this lesion could not be determined as not all children with parotid swelling presenting at the clinics were included in the study. Children with lower viral loads showed an increased risk of developing parotid lymphoid proliferation. The parotid lesions responded well to HAART but did not completely resolve.

Introduction: Cystic lymphoid hyperplasia (CLH) is a common yet under recognised entity affecting the parotid gland in HIV infected patients. This is the largest global clinicopathological study of CLH to date consisting of 167 cases (85M, 82F). Aim: To define the clinical parameters, histology and immunopathological features of CLH with a view to elucidating the aetio-pathogenesis. Material and Methods: This retrospective study on archival cases of CLH included patient’s age, race, gender, nature of CLH, HIV status, CD4 counts and viral loads where available. Of the 167 confirmed cases of CLH, 109 cases were histologically reviewed and 25 cases were immunohistochemically analysed with CD3, CD20, CD4, CD8 and p24 using standard procedures. Ethics clearance (M080927 and M080850) was obtained. Results: CLH mainly affects the parotid gland with a male predominance. Submandibular gland (p = 0.27) and bilateral parotid involvement favours females (2:1). CLH affects females at a younger mean age in both the parotid and submandibular glands (36.5, 31 years) respectively compared to males (40.9, 42.4 years) (p = 0.0032). Intra-lymph nodal origin is favoured with 76.1% of cases occurring within entrapped salivary gland remnants. P24 staining reveals ~90% specificity in HIV associated CLH. Immunostaining showed a CD8:CD4 of ~1:1 except in selected cases where CD4 was decreased in the interfollicular areas. Conclusion: CLH is the preferred term to describe bilateral parotid enlargement in HIV infected patients. This study strongly supports origin of CLH following ductal ectasia of entrapped salivary gland inclusions within atypical lymphoid hyperplasia arising within lymph nodes in the context of an HIV setting. CLH should be classified as an orofacial lesion strongly associated with HIV and AIDS.

BACKGROUND:To evaluate the feasibility of image-guided radiotherapy based on helical Tomotherapy to spare the contralateral parotid gland in head and neck cancer patients with unilateral or no neck node metastases.METHODS:A retrospective review of 52 patients undergoing radiotherapy for head and neck cancers with image guidance based on daily megavoltage CT imaging with helical tomotherapy was performed.RESULTS:Mean contralateral parotid dose and the volume of the contralateral parotid receiving 40Gy or more were compared between radiotherapy plans with significant constraint (SC) of less than 20Gy on parotid dose (23 patients) and the conventional constraint (CC) of 26Gy (29 patients). All patients had PTV coverage of at least 95% to the contralateral elective neck nodes. Mean contralateral parotid dose was, respectively, 14.1Gy and 24.7Gy for the SC and CC plans (p<0.0001). The volume of contralateral parotid receiving 40Gy or more was respectively 5.3% and 18.2% (p<0.0001)CONCLUSION:Tomotherapy for head and neck cancer minimized radiotherapy dose to the contralateral parotid gland in patients undergoing elective node irradiation without sacrificing target coverage.

Thesis (Ph. D.)--State University of New York at Buffalo, 1971. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 181-194).

Diss. (sammanfattning) Göteborg : Göteborgs universitet, 2009. / Härtill 6 uppsatser.

Thesis (Ph. D.)--State University of New York at Buffalo, 1971. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 181-194).

Orientadores: Luiz Paulo Kowalski, Oslei Paes de Almeida / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba / Made available in DSpace on 2018-08-09T14:07:50Z (GMT). No. of bitstreams: 1 Silva_KeniaRegina_M.pdf: 1402143 bytes, checksum: 385a4aeaced1369767478ecb4c8dd53b (MD5) Previous issue date: 2007 / Resumo: As neoplasias benignas e malignas que acometem glândulas salivares constituem cerca de 1 a 4% de todas as neoplasias do organismo humano. As glândulas parótidas são as mais frequentemente envolvidas, seguidas das glândulas salivares menores e submandibulares, sendo raramente acometidas as glândulas sublinguais. A presença de metástases regionais, extensão do tumor, dor na apresentação e idade maior que 55 anos têm sido considerados como indicadores de pior prognóstico. O objetivo deste estudo foi avaliar as características clínicas, histopatológicas e imunohistoquímicas de 293 tumores malignos das glândulas salivares tratados no Departamento de Cirurgia de Cabeça e Pescoço do Hospital A.C. Camargo, São Paulo, a fim de identificar fatores de riscos associados ao desenvolvimento de metástases linfonodais e sua importância prognóstica. Os dados clínicos dos pacientes foram obtidos por meio dos prontuários médicos e transferidos para uma ficha clínica padronizada especialmente para o estudo. Os diagnósticos histopatológicos foram confirmados, através da revisão dos preparados histológicos. As reações imunoistoquímicas foram feitas através da técnica da estreptavidina-biotina-peroxidase, utilizando-se anticorpos contra proteína p53, antígeno carcinoembrionário (CEA), Ki-67, c-erbB-2 e bcl-2. Dos pacientes que participaram do estudo, 150 eram homens (51,2%) e 143 (48,8%) mulheres, com idade média de 48 anos, variando de 5 a 91 anos. Cento e cinqüenta dois casos (51,9%) eram tumores primários das glândulas salivares maiores, sendo desses 120 em parótida. O tipo histológico mais comum foi Carcinoma Mucoepidermóide seguido pelo Carcinoma Adenóide Cístico, que juntos corresponderam a 70,3% dos casos. Cirurgia foi o tratamento mais realizado e 119 pacientes foram submetidos a esvaziamento cervical. Cento e quatro pacientes (35,5%) apresentaram recidivas locais, regionais e ou à distância. Metástases linfonodais foram observadas em 25% dos casos com idade superior a 65 anos (p=0,020) e em 23% dos pacientes que foram a óbito pela doença (p=0,004). A sobrevida global em 5 anos foi de 65,6% e em 10 anos 54,6%. Reações imunoistoquímica para p53, bcl-2, Ki-67, CEA, c-erbB-2 foram positivas em 31,2%, 46,6%, 27,1%, 19,2% e 41,0% respectivamente. Após a análise dos dados, observou-se que os fatores de riscos para presença de metástases linfonodais incluíam a idade maior que 40 anos, linfonodos clinicamente comprometidos, p53 positivo e C-erb-2 negativo. Os fatores prognósticos independentes para óbito foram idade acima dos 40 anos, linfonodos clinicamente comprometidos, diâmetro do tumor maior que 4 cm e tumores com marcação positiva para Ki-67. Conclusão: Metástases linfonodais estão associadas a idade, achado clinico de presença de metástases e imunoexpressão de p53 (positivo) e C-erbB-2 (negativo). A metástase linfonodal é um fator prognóstico independente em carcinomas de glândulas salivares / Abstract: Benign and malignant salivary gland neoplasias comprises 4¿10% of all the neoplasias affecting humans. The parotid glands are the most commonly affected, followed by minor salivary and submandibular glands. Regional metastasis, tumor extension, presence of pain, and age older than 55 years have been considered poor prognostic indicators. The aim of this study was to analyze the clinical, histological and immunohistochemical characteristics of malignant salivary gland tumors treated at the Department of Head and Neck Surgery, A.C. Camargo Hospital, São Paulo, and to identify the risk factors associated with lymph node metastasis and its prognostic relevance. Clinical data were obtained from the medical records. Histopathological slides were reviewed and immunohistochemical reactions against p53 protein, carcinoembryonic antigen (CEA), Ki-67, c-erbB-2 and bcl-2 performed using the streptavidin-biotin-peroxidase method. Results revealed that 150 patients were men (51.2%) and 143 women (48.8%), with a mean age of 48 years, varying from 5 to 91 years. Primary tumors involving the major salivary glands were observed in 152 cases (51.9%), 120 of which affected the parotid glands. Histological analysis revealed Mucoepidermoid Carcinoma (41.6%) followed by Adenoid Cystic Carcinoma (28.7%) totaling 70.3% of the cases. Surgery was needed in most of the cases and 119 patients were submitted to neck dissection. Recurrence was observed for 104 patients (35.5%). Survival rate was 65.6% at 5 years and 54.6% at 10 years. Immunohistochemical reactions for p53, bcl-2, Ki-67, CEA, c-erbB-2 were positive in 31.2%, 46.6%, 27.1%, 19.2% and 41.0% of the cases, respectively. Clinically affected lymph nodes, p53 positive and C-erb-2 negative tumor cells, and age older than 40 years were regarded as risk factors for lymph node metastasis. Clinically affected lymph nodes, tumors 4 cm or greater in diameter, tumors with Ki-67 positive cells, and age older than 40 years were considered independent prognostic factors for death. Conclusion: limph node metastasis are associated with age, clinical identification of metastatic limph nodes and immunoexpression of p53 (positive) and C-erbB-2 (negative). Limph node metastasis is a significant and independent prognostic factor in salivary gland carcinomas / Mestrado / Patologia / Mestre em Estomatopatologia

Oncocytomas are uncommon tumors of the salivary gland. They have an abundance of mitochondria, which is manifested as granular eosinophilic cytoplasm by light microscopy. On histological sections, presence of cytoplasmic glycogen and/or fixation artifact can impart cytoplasmic clearing, and oncocytomas with a predominance of clear cytoplasm are labeled clear cell oncocytomas. Two forms of oncocytoma, eosinophilic and clear cell, have been described in the surgical pathology literature. The purpose of this manuscript is to conduct a comparative cytological assessment to ascertain parallels and differences between the two variants.

Thesis (Ph. D.)--University of Washington, 1997. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.