3,637 results match your criteria: "Malignant Parotid Tumor Imagings"
Cancer Med
December 2024
Department of Radiotherapy, Centre Eugène Marquis, Rennes, France.
Background: Modern imaging techniques with magnetic resonance imaging (MRI) or positron emission tomography/computed tomography (PET/CT) have recently been developed to assess radiation-induced damage to salivary structures. The primary aim of this review was to summarize evidence on the imaging modalities used for the assessment and prediction of xerostomia after head and neck radiotherapy (RT).
Methods: A systematic review of the literature was performed using successively the MeSH terms "PET," "MRI," "scintigraphy," "xerostomia," and "radiotherapy.
Clin Exp Rheumatol
December 2024
Rheumatology Institute, Azienda Sanitaria Universitaria Friuli Centrale (ASUFC), Udine, and Department of Medicine (DMED), University of Udine, Italy.
Objectives: The role of major salivary gland ultrasound (SGUS) in evaluating Sjögren's disease (SjD) continues to be debated. This study aims to assess the effectiveness of two SGUS scores (OMERACT and Hocevar et al.) in identifying lymphoma in SjD patients.
View Article and Find Full Text PDFMaedica (Bucur)
September 2024
Department of Otorhinolaryngology, Head and Neck Surgery, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece.
It is indisputable that high-resolution ultrasound (US) is the diagnostic gold standard for the evaluation of superficial parotid gland diseases. It is a dynamic, quick, simple, easily available, cost-effective, noninvasive procedure, with absence of ionizing radiation examination that can be performed safely and in special categories of patients such as pregnant women and children. It is widely accepted that on US, benign tumors have clear, smooth and well-defined borders, homogeneous hypoechoic parenchyma and a defined distribution of vessels.
View Article and Find Full Text PDFClin Med Insights Case Rep
November 2024
Department of Oto-laryngology, Cheikh Khalifa International University Hospital, Mohammed VI University of Sciences and Health (UM6SS), Casablanca, Morocco.
Cancer Diagn Progn
November 2024
Department of Pathology, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea.
Background/aim: Parotid oncocytomas typically present as benign, unilateral, slow-growing, painless, and solitary masses that are histologically firm and multilobulated. They are often misdiagnosed as pleomorphic adenomas, hemangiomas, or other forms of oncocytosis. However, in our case, the parotid oncocytomas initially mimicked bilateral parotid gland metastasis of advanced oropharyngeal cancer.
View Article and Find Full Text PDFOncol Lett
January 2025
Department of Ultrasound Medicine, Affiliated Hospital of Jining Medical University, Jining, Shandong 272029, P.R. China.
Epithelial-myoepithelial carcinoma (EMC) is a rare low-grade malignant tumor with uncommon regional lymph node metastasis and distant metastasis. The diagnosis of this disease primarily relies on the examination of pathological morphology and immunohistochemical staining, as its clinical symptoms and imaging findings are non-specific. This makes it more difficult to provide specific information about EMC lung metastasis.
View Article and Find Full Text PDFShanghai Kou Qiang Yi Xue
August 2024
Department of Stomatology, the First Affiliated Hospital of Shihezi University School of Medicine. Shihezi 832008, Xinjiang Uygur Autonomous Region, China. E-mail:
Head Face Med
October 2024
Department of Otolaryngology Head & Neck Surgery, Kyung Hee University School of Medicine, Kyung Hee University Medical Center, Seoul, Korea.
Strahlenther Onkol
December 2024
Department of Radiation Oncology, Hacettepe University Faculty of Medicine, Ankara, Turkey.
Purpose: Intensity-modulated radiotherapy (IMRT) is the standard treatment approach for nasopharyngeal cancer (NPC). IMRT enables effective sparing of the parotid glands and reduces the risk of xerostomia, a common complication of head and neck irradiation. Nevertheless, it is essential to determine whether the parotid-sparing IMRT (ps-IMRT) technique yields increased intra-/periparotid recurrence rates, which constitutes the main purpose of this study.
View Article and Find Full Text PDFJ Pak Med Assoc
October 2024
Department of Radiotherapy, Al-Amal National Hospital for Cancer Treatment, Baghdad Medical City, Iraqi Ministry of Health, Baghdad, Iraq.
Objective: To compare the efficiency of three-dimensional conformal radiotherapy and intensity-modulated radiation therapy techniques.
Method: The cross-sectional study was conducted from February to August 2021 at Al-Amal National Hospital, Baghdad, Iraq, and comprised patients aged 19-45 years with cancerous head and neck tumours of size 2-7cm. All the patients underwent magnetic resonance imaging or computed tomography simulation scans.
Front Oncol
October 2024
Department of Radiology, Ruijin Hospital, shanghai Jiao Tong University School of Medicine, Jiading, Shanghai, China.
Purpose: To assess the diagnostic potential of the synthetic MRI (SyMRI) for differentiating Warthin's tumors (WT) from pleomorphic adenomas (PA).
Materials And Methods: Forty-nine individuals with parotid gland tumors (PA, n = 23; WT, n = 26) were recruited. Using two distinct regions of interest (ROI), SyMRI quantitative parameters of lesions were calculated, including mean and standard deviation (T1, T2, PD, T1sd, T2sd, and PDsd).
Sci Rep
October 2024
Institute of Physics, College of Natural Sciences, University of Rzeszow, Profesora Stanisława Pigonia str. 1, Rzeszow, 35-310, Poland.
Parotid glands are one of the most common sites for salivary gland tumors. Conventional imaging techniques have limited usefulness in the quantitative assessment of the parotid glands, making it difficult to differentiate between healthy tissue and tumors, as well as between benign and malignant tumors. Magnetic resonance elastography (MRE) is a non-invasive technique that may potentially overcome these limitations.
View Article and Find Full Text PDFAm J Cancer Res
September 2024
Department of Radiology, The First Affiliated Hospital of Chongqing Medical University Chongqing 400016, China.
Objective: To investigate the ability of intra- and peritumoral radiomics based on three-phase computed tomography (CT) to distinguish between malignant and benign parotid tumors.
Methods: We conducted a retrospective analysis of data from 374 patients with parotid gland tumors, all confirmed by histopathology. A total of 321 patients from Center 1 (January 2014 to January 2023) were randomly divided into the training set and internal testing set at a ratio of 7:3, whereas 53 patients from Center 2 (January 2020 to June 2022) constituted the external testing set.
J Med Case Rep
October 2024
Department of Pathology, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
Int J Surg Case Rep
November 2024
Dept. of orthodontics and dentofacial orthopaedics, M. A. Rangoonwala College of Dental Sciences & Research Centre, Pune, Maharashtra, India.
Introduction: Mammary analogue secretory carcinoma (MASC) of the salivary gland was first described by Skálová et al. in 2010. It is often associated with a translocation, t(12;15)(p13;q25), which results in the fusion gene ETV6-NTRK3.
View Article and Find Full Text PDFJ Imaging Inform Med
September 2024
Department of Electrical and Electronics Engineering, Kahramanmaraş Sütçü İmam University, Kahramanmaraş, 46050, Turkey.
The differentiation of benign and malignant parotid gland tumors is of major significance as it directly affects the treatment process. In addition, it is also a vital task in terms of early and accurate diagnosis of parotid gland tumors and the determination of treatment planning accordingly. As in other diseases, the differentiation of tumor types involves several challenging, time-consuming, and laborious processes.
View Article and Find Full Text PDFEur J Rheumatol
July 2024
Department of Rheumatology, Hospital de Sant Joan Despí Moisès Broggi, Barcelona, Spain.
Soft tissue masses are very common and may appear in the context of rheumatic diseases. They usually occur alone but may occasionally be part of the syndromes and can sometimes involve periarticular tissues. Soft tissue masses can be divided into several categories.
View Article and Find Full Text PDFJ Appl Clin Med Phys
December 2024
Department of Radiation Oncology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Background And Purpose: The aim of this study was to identify dose constraints for the parotid ducts that limit patient-reported xerostomia and estimate whether these constraints are achieved during conventional parotid gland sparing radiation therapy (PGS-RT).
Methods And Materials: Thirty-eight oropharyngeal squamous cell carcinoma patients were treated prospectively on trial with MRI sialography-guided parotid duct sparing radiation therapy (PDS-RT). PDS-RT explicitly minimizes dose to the parotid ducts in addition to PGS-RT.
Ann Afr Med
October 2024
Department of Pathology, King George's Medical University, Lucknow, Uttar Pradesh, India.
Diagnostics (Basel)
September 2024
Department of Microscopic-Morphology-Morphopathology, ANATPATMOL Research Center, "Victor Babeș" University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timișoara, Romania.
Salivary gland tumors are a rare and heterogeneous group of neoplasms of the head and neck region. The mixed category of these tumors include the following entities: pleomorphic adenoma (PA), carcinoma ex pleomorphic adenoma (CEPA), salivary carcinosarcoma (CS), and metastasizing PA (MPA). The most common benign tumor of the salivary glands is PA.
View Article and Find Full Text PDFHeliyon
September 2024
Department of Medical Imaging, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510030, Guangdong, China.
Rationale And Objectives: Preoperative differentiation of malignant tumors (MT), pleomorphic adenomas (PA), and other benign tumors of the parotid gland is critical to clinical strategy, this study aimed to develop and validate a T2-weighted image (T2WI) based radiomics model through machine learning approaches for the triple classification of parotid gland tumors.
Materials And Methods: We retrospectively enrolled 147 patients from January 2010 to July 2022. T2WIs were used to extract radiomics features.
J Craniomaxillofac Surg
November 2024
Department of Oral and Maxillofacial Surgery, University Hospital of RWTH Aachen University, Aachen, Germany; Oral and Maxillofacial Surgery, Klinikum Detmold, University Hospital Ostwestfalen-Lippe (OWL), Detmold, Germany.
Background: Parotidectomy can affect facial symmetry. Our study evaluated the symmetry of different facial areas and upper neck after total parotidectomy and filling the area with vascularized fat flap (VFF).
Methods: Facial symmetry was evaluated in eight patients and a control group matched in terms of gender and age, using a three-dimensional (3D) facial scanner.
Jpn J Radiol
September 2024
Department of Radiology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Japan.
Objectives: To develop and identify machine learning (ML) models using pretreatment 2-deoxy-2-[F]fluoro-D-glucose ([F]-FDG)-positron emission tomography (PET)-based radiomic features to differentiate benign from malignant parotid gland diseases (PGDs).
Materials And Methods: This retrospective study included 62 patients with 63 PGDs who underwent pretreatment [F]-FDG-PET/computed tomography (CT). The lesions were assigned to the training (n = 44) and testing (n = 19) cohorts.
Cytopathology
January 2025
Department of Surgical Pathology, Health Research Institute "San Carlos" (IdISCC), Hospital Universitario Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain.
Introduction: Striated duct adenoma is a benign salivary gland tumour recently recognized by the World Health Organization. To date, no report has described the cytological features of this entity.
Materials And Methods: We report the case of a 60-year-old woman with a tumour in the right parotid gland with a diameter greater than 2.
Natl J Maxillofac Surg
July 2024
OMFS Department, Ipswich Hospital, Heath Road, Ipswich, IP4 5PD, United Kingdom.
Angiosarcomas are rare, accounting for only 1-2% of sarcomas in the head and neck region. We present an extremely rare case of primary non-radiation-induced angiosarcoma of the parotid with epithelioid morphology which required a tertiary center second opinion for its histological characteristics. We discuss the presentation, imaging, diagnosis, characteristics, and pathway of this case.
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