594 results match your criteria Pleomorphic Parotid Adenoma Imaging


Endoscopic management of huge pleomorphic adenoma of the nasal septum; a case report.

Ann Med Surg (Lond) 2022 May 29;77:103697. Epub 2022 Apr 29.

Medical Officer, Metrocity Hospital, Pokhara, Nepal.

Introduction: and Importance: Pleomorphic adenoma (PA) is one of the most common benign tumors of the salivary glands. They can develop in all the salivary glands, but it most commonly occurs in the parotid gland, followed minor salivary gland. It may occurs at the hard and soft palate, lips, cheeks, gingiva, and nasal septum. Read More

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A Deep Learning Model for Classification of Parotid Neoplasms Based on Multimodal Magnetic Resonance Image Sequences.

Laryngoscope 2022 May 16. Epub 2022 May 16.

ENT Institute and Department of Otorhinolaryngology, Eye & ENT Hospital, Fudan University, Shanghai, China.

Objective: To design a deep learning model based on multimodal magnetic resonance image (MRI) sequences for automatic parotid neoplasm classification, and to improve the diagnostic decision-making in clinical settings.

Methods: First, multimodal MRI sequences were collected from 266 patients with parotid neoplasms, and an artificial intelligence (AI)-based deep learning model was designed from scratch, combining the image classification network of Resnet and the Transformer network of Natural language processing. Second, the effectiveness of the deep learning model was improved through the multi-modality fusion of MRI sequences, and the fusion strategy of various MRI sequences was optimized. Read More

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Positive predictive values of MRI and ultrasound-guided fine-needle aspiration biopsy for isolated parotid swelling in adults: A STARD comparative analysis.

Eur Ann Otorhinolaryngol Head Neck Dis 2022 May 7. Epub 2022 May 7.

Service d'otorhinolaryngologie et de chirurgie cervico-faciale, université Paris Cité, HEGP, AP-HP, 20-40, rue Leblanc, 75015 Paris, France.

Objectives: To evaluate positive predictive values (PPVs) of magnetic resonance imaging (MRI) and ultrasound-guided fine-needle aspiration biopsy (UFNAB) in patients with isolated parotid swelling.

Material And Methods: Observational study following the STARD guideline, based on a cohort of 212 patients from 18 to 93years of age, with isolated parotid swelling (malignant: 16.9%; benign: 83. Read More

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T2 mapping and readout segmentation of long variable echo-train diffusion-weighted imaging for the differentiation of parotid gland tumors.

Eur J Radiol 2022 Jun 25;151:110265. Epub 2022 Mar 25.

MR Collaboration, Siemens Healthneer Ltd., Beijing, China.

Objective: To investigate the diagnostic value of radial turbo-spin-echo (TSE) T2 mapping and readout segmentation of long variable echo-train diffusion-weighted imaging (RESOLVE DWI) for the differentiation of parotid gland tumors.

Materials And Methods: One hundred and fifty-four patients with histopathologically confirmed parotid gland tumors were retrospectively recruited from June 2018 to May 2021 at the First Affiliated Hospital of Zhengzhou University. There were 111 benign tumors and 43 malignant tumors. Read More

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[Clinicopathologic analysis of micro and mini parotid gland tumors].

Beijing Da Xue Xue Bao Yi Xue Ban 2022 Apr;54(2):335-339

Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.

Objective: To investigate the clinicopathological characteristics of micro and mini parotid gland tumors and to provide reference for their clinical diagnosis and treatment.

Methods: Patients with parotid gland tumors treated in the Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology from December 2012 to April 2020 were selected. Relevant clinical data of the patients with tumor diameter ≤20 mm detected by preoperative CT were collected to analyze the clinicopathological characteristics and prognosis of micro and mini parotid gland tumors. Read More

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Tumor blood flow and apparent diffusion coefficient histogram analysis for differentiating malignant salivary tumors from pleomorphic adenomas and Warthin's tumors.

Sci Rep 2022 04 8;12(1):5947. Epub 2022 Apr 8.

Department of Radiology, Mie University School of Medicine, 2-174 Edobashi, Tsu, Mie, Japan.

We aimed to assess the combined diagnostic value of apparent diffusion coefficient (ADC) and tumor blood flow (TBF) obtained by pseudocontinuous arterial spin labeling (pCASL) for differentiating malignant tumors (MTs) in salivary glands from pleomorphic adenomas (PAs) and Warthin's tumors (WTs). We used pCASL imaging and ADC map to evaluate 65 patients, including 16 with MT, 30 with PA, and 19 with WT. We evaluated all tumors by histogram analyses and compared various characteristics by one-way analysis of variance followed by Tukey post-hoc tests. Read More

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Management for Warthin Tumor of the Parotid Gland: Surgery or Observation. A 21-Year Retrospective Study of 387 Cases.

Ear Nose Throat J 2022 Apr 8:1455613221080927. Epub 2022 Apr 8.

Institutional Research Office, 13010Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan.

Purpose: This study investigated the characteristics, diagnosis, and treatment of Warthin tumors (WTs) to explore the possibility of managing patients by observation.

Methods: We reviewed the records of 1167 patients with benign parotid tumors who were seen in our department between September 1999 and April 2021. Among them, 387 cases were WT and 668 cases were pleomorphic adenoma. Read More

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Feasibility of Intravoxel Incoherent Motion (IVIM) and Dynamic Contrast-Enhanced Magnetic Resonance Imaging (DCE-MRI) in Differentiation of Benign Parotid Gland Tumors.

Biology (Basel) 2022 Mar 4;11(3). Epub 2022 Mar 4.

Department of Otolaryngology, Medical University of Gdansk, 80-214 Gdansk, Poland.

Aim: The aim of this prospective study is to identify quantitative intravoxel incoherent motion and dynamic contrast-enhanced magnetic resonance imaging parameters of the most frequent benign parotid tumors, compare their utility and diagnostic accuracy.

Methods: The study group consisted of 52 patients with 64 histopathologically confirmed parotid focal lesions. Parametric maps representing apparent diffusion coefficient (ADC), pure diffusion coefficient (D), pseudo-diffusion coefficient (D*), perfusion fraction (FP) and transfer constant (Ktrans), reflux constant (Kep), extra-vascular extra-cellular volume fraction (Ve), and initial area under curve in 60 s (iAUC) have been obtained from multiparametric MRI. Read More

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Perfusion analysis of benign parotid gland tumors by contrast-enhanced ultrasonography (CEUS).

Eur Arch Otorhinolaryngol 2022 Mar 1. Epub 2022 Mar 1.

Department of Otorhinolaryngology, Head and Neck Surgery, Nordstadt Clinic, Academic Hospital, Haltenhoffstr. 41, 30167, Hannover, Germany.

Background: Diagnosis of parotid gland tumors is sometimes challenging due to their diversity and pleomorphic histological appearance. B-scan sonography along with color-coded duplex sonography is the gold standard in the diagnostic workup of these lesions, whereas histopathology is to date the gold standard for the final diagnosis. To date no single imaging technique provides the chance for an art-diagnosis with highly diagnostic accuracy. Read More

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Imaging of parotid anomalies in infants and children.

Insights Imaging 2022 Feb 24;13(1):27. Epub 2022 Feb 24.

Department of Pediatric Radiology, Hôpital Armand Trousseau, 26, Avenue du Dr. Arnold Netter, 75012, Paris, France.

A wide spectrum of disorders involves the parotid glands, in infancy and childhood. Acute or chronic inflammatory/infectious diseases are predominant. The first branchial cleft anomalies are congenital lesions that typically manifest during childhood. Read More

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February 2022

Preoperative Challenges in Managing Intraparotid Schwannoma.

Cureus 2022 Jan 18;14(1):e21392. Epub 2022 Jan 18.

Department of Radiology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, MYS.

Schwannomas are a benign and rare entity that originates from Schwann cells. The majority of schwannomas are found in the head and neck regions and usually involve the intratemporal course of the facial nerve (FN). Isolated extratemporal intraparotid involvement is very rare. Read More

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January 2022

Surgical Parapharyngeal Space Tumor Analysis with Case Series Study.

Comput Intell Neurosci 2022 14;2022:7083240. Epub 2022 Feb 14.

Department of Otolaryngology, King Abdulaziz University Hospital, Jeddah 21589, Saudi Arabia.

Background: The parapharyngeal space is a hypothetical region in the neck that stretches from the base of the skull to the bigger corner of the hyoid bone. The fascia that connects the styloid process to the tensor veli palatini separates the compartment into prestyloid and poststyloid compartments, with the prestyloid compartment being larger. In the general population, tumors of the parapharyngeal area are very uncommon, accounting for less than 1% of all head and neck neoplasms in the population. Read More

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February 2022

Surgical Treatment of Parapharyngeal Space Salivary Gland Tumor.

J Craniofac Surg 2022 Feb 11. Epub 2022 Feb 11.

Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Medical School & Hwasun Hospital, Hwasun, South Korea.

Introduction: Parapharyngeal space salivary gland tumors are very rare. The authors sought to examine the clinical features, treatment methods, and treatment results of parapharyngeal space salivary gland tumors in our hospital.

Methods: The authors retrospectively enrolled 15 patients who were finally diagnosed as having parapharyngeal space salivary gland tumors from January 2010 to January 2021. Read More

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February 2022

Proliferation PET/CT Imaging of Salivary Gland Tumor.

Authors:
Ryogo Minamimoto

Diagnostics (Basel) 2021 Nov 8;11(11). Epub 2021 Nov 8.

National Center for Global Health and Medicine, Department of Radiology, Division of Nuclear Medicine, Tokyo 162-8655, Japan.

Salivary gland tumors are rare neoplasms which vary in terms of origin and malignant potential. 2-[18F]-fluoro-2-deoxy-d-glucose (FDG)-positron emission tomography (PET) has limited ability to differentiate between different types of salivary gland tumors because both Warthin's tumors and pleomorphic adenomas usually show increased FDG uptake, with no statistically significant difference in standardized uptake value (SUV) compared with malignant salivary gland tumors. Here, we discuss 4'-[methyl-11C]-thiothymidine (4DST) PET, which provides cell proliferation imaging capable of demonstrating intense uptake in parotid carcinoma and Warthin's tumor, but no uptake in parotid pleomorphic adenoma. Read More

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November 2021

Endoscopic-assisted resection of pleomorphic adenoma in the accessory parotid gland.

J Med Invest 2021 ;68(3.4):376-380

Department of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital, 1-2-1, Asahi-machi, Takamatsu, Kagawa 760-8557, Japan.

Background : An accessory parotid gland (APG) is a common anatomical structure that occurs in 10%-56% of individuals. Pleomorphic adenomas are the most common benign tumors of the APG, and their ideal treatment is surgical excision, although there is a risk for aesthetic disorders and facial nerve damage due to the site of origin. Moreover, despite being benign, these tumors are known to recur. Read More

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November 2021

Expanding the clinicopathological spectrum of TGFBR3-PLAG1 rearranged salivary gland neoplasms with myoepithelial differentiation including evidence of high-grade transformation.

Genes Chromosomes Cancer 2022 02 17;61(2):94-104. Epub 2021 Nov 17.

Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland.

PLAG1 rearrangements have been described as a molecular hallmark of salivary gland pleomorphic adenoma (PA), carcinoma ex pleomorphic adenoma (CEPA), and myoepithelial carcinoma (MECA). Several fusion partners have been described, however, commonly no further assignment to the aforementioned entities or a morphological prediction can be made based on the knowledge of the fusion partner alone. In contrast, TGFBR3-PLAG1 fusion has been specifically described and characterized as an oncogenic driver in MECA, and less common in MECA ex PA. Read More

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February 2022

A retrospective analysis of surgery in prestyloid parapharyngeal tumors: Lateral approaches vs transoral robotic surgery.

Laryngoscope Investig Otolaryngol 2021 Oct 17;6(5):1062-1067. Epub 2021 Sep 17.

Otolaryngology Section, Head and Neck Surgery Hospital Germans Trias i Pujol Badalona Spain.

Objective: Surgery is the standard treatment for most tumors in the prestyloid parapharyngeal space (PPS) but it can be a challenging procedure because of the anatomical complexity of the area. Prestyloid surgery can be performed with various lateral approaches or with a medial approach using transoral robotic surgery (TORS)-either alone or in combination with a transcervical incision. We have retrospectively compared our center's results with lateral and medial approaches. Read More

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October 2021

Evaluation of MR imaging findings differentiating parotid basal cell adenomas from other parotid tumors.

Eur J Radiol 2021 Nov 27;144:109980. Epub 2021 Sep 27.

Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.

Purpose: To evaluate the usefulness of magnetic resonance imaging (MRI) to differentiate basal cell adenomas (BCAs) from other parotid tumors.

Method: A total of 136 patients with histologically proven parotid gland tumors (13 BCAs, 66 pleomorphic adenomas [PAs], 30 Warthin tumors [WTs], and 27 parotid cancers [PCs]) who underwent a cervical MRI study between December 2011 and March 2019 were retrospectively enrolled. The MRI findings of the tumors were evaluated by two board-certified radiologists. Read More

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November 2021

Parotid Warthin's tumor: novel MR imaging score as diagnostic indicator.

Clin Imaging 2022 Jan 22;81:9-14. Epub 2021 Sep 22.

Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, MD, USA; Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, PA, USA.

Objectives: Despite known characteristic radiologic and clinical features, differentiation between Warthin's tumor (WT) and other parotid tumors remains challenging. The purpose of this study was to more precisely assess the MR imaging features of WT and to develop a scoring system combining the most specific characteristics.

Methods: A total of 208 patients with parotid gland tumors and presurgical MRI were included. Read More

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January 2022

Diagnostic performance of qualitative and radiomics approach to parotid gland tumors: which is the added benefit of texture analysis?

Br J Radiol 2021 Dec 30;94(1128):20210340. Epub 2021 Sep 30.

Department of Biomedicine, Neuroscience and Advanced Diagnostics (BIND), University Hospital of Palermo, Palermo, Italy.

Objective: To investigate whether MRI-based texture analysis improves diagnostic performance for the diagnosis of parotid gland tumors compared to conventional radiological approach.

Methods: Patients with parotid gland tumors who underwent salivary glands MRI between 2008 and 2019 were retrospectively selected. MRI analysis included a qualitative assessment by two radiologists (one of which subspecialized on head and neck imaging), and texture analysis on various sequences. Read More

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December 2021

Surgical Approaches to Parapharyngeal Space Tumors: An Example and Review of the Literature.

Case Rep Surg 2021 30;2021:3536145. Epub 2021 Aug 30.

ENT Department, Salah Azaiez Institute of Cancer, Medicine University, Tunis, Tunisia.

Parapharyngeal space tumors (PPS) are rare. They represent less than 1% of all head and neck tumors. They are of various histologies. Read More

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Functional gland-preserving surgery via periauricular incision for pleomorphic adenoma of the parotid gland.

Authors:
Jong-Lyel Roh

Eur J Surg Oncol 2022 Jan 28;48(1):21-26. Epub 2021 Aug 28.

Department of Otorhinolaryngology-Head and Neck Surgery, CHA Bundang Medical Center, CHA University School of Medicine, Gyeonggi-do, Seongnam, Republic of Korea. Electronic address:

Introduction: Gland-preserving surgery is often used for benign tumours in the parotid gland. Partial superficial parotidectomy via a periauricular incision may bring satisfactory cosmetic outcomes but the disease control outcome remains unrevealed. This study evaluated functional and disease control outcomes after gland-preserving surgery via periauricular incision for pleomorphic adenoma of the parotid gland. Read More

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January 2022

Parotid Neurogenic Tumors: MPNST Sarcoma to Schwannoma-Review of Literature and Guidelines in Management.

J Maxillofac Oral Surg 2021 Sep 23;20(3):356-363. Epub 2021 Mar 23.

Division of OMF-Head and Neck Surgery, Department of Surgery, 98415 Nebraska Medical Centre, University of Nebraska Medical Centre, Omaha, NE 68198-4125 USA.

Objective: To delineate a distinct clinical, pathological, cytoimmunohistochemical distinguishing features of extracranial parotid neurogenic tumors. Pleomorphic adenoma, the most common parotid neoplasm by itself can mimic a neurogenic tumor, i.e. Read More

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September 2021

Influence of post-label delay time on the performance of 3D pseudo-continuous arterial spin labeling magnetic resonance imaging in the characterization of parotid gland tumors.

Eur Radiol 2022 Feb 4;32(2):1087-1094. Epub 2021 Aug 4.

Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, No. 300, Guangzhou Rd, Gulou District, Nanjing, People's Republic of China.

Objective: To evaluate the influence of post-label delay times (PLDs) on the performance of 3D pseudo-continuous arterial spin labeling (pCASL) magnetic resonance imaging for characterizing parotid gland tumors and to explore the optimal PLDs for the differential diagnosis.

Materials And Method: Fifty-eight consecutive patients with parotid gland tumors were enrolled, including 33 patients with pleomorphic adenomas (PAs), 16 patients with Warthin's tumors (WTs), and 9 patients with malignant tumors (MTs). 3D pCASL was scanned for each patient five times, with PLDs of 1025 ms, 1525 ms, 2025 ms, 2525 ms, and 3025 ms. Read More

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February 2022

Evaluation of benign tumors of large salivary glands according to the new classification of the European Salivary Glands Society.

Otolaryngol Pol 2021 Apr;75(4):7-13

Department of Otolaryngology, Head and Neck Oncology, Medical University of Lodz, University Clinical Hospital Norbert Barlicki in Lodz, Poland.

<b>Introduction:</b> Tumors of large salivary glands constitute about 2-3% of all head and neck tumors. Their incidence is statistically greater in males than in females, with the first symptoms usually appearing between the 4th and 7th decade of life. <br/><b>Aim:</b> The aim of the study was to assess the usefulness of the new classification proposed by European Salivary Gland Society (ESGS) in comparison with the divisions of procedures previously valid in the literature, making a retrospective analysis of patients operated on due to benign tumors of large salivary glands in the Department of Otolaryngology, Head and Neck Oncology of the Medical University of Lodz in 2012-2020. Read More

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Comparison of preoperative diagnostic accuracy of fine needle aspiration and core needle biopsy in parotid gland neoplasms.

Eur Arch Otorhinolaryngol 2021 Oct 31;278(10):4067-4074. Epub 2021 Jul 31.

Dept of Otorhinolaryngology, University of Medical Sciences, Bagcilar Training and Research Hospital, Merkez Mahallesi, 6. Sk. Bağcilar, 34100, Istanbul, Turkey.

Background: Fine needle aspiration (FNA) and core needle biopsy (CNB) are two commonly used approaches for the diagnosis of suspected neoplastic parotid gland lesions. We aimed to compare the diagnostic efficiency of FNA and CNB performed with ultrasound guidance preoperatively for the diagnosis of parotid neoplasms.

Methods: We retrospectively analysed the preoperative specimens of 113 patients (66 FNA, 47 CNB) who underwent surgical excision at our institute between 2014 and 2017. Read More

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October 2021

Parotid incidentalomas: a systematic review.

J Laryngol Otol 2021 Sep 26;135(9):765-769. Epub 2021 Jul 26.

Department of Otolaryngology - Head and Neck Surgery, Victoria Hospital, Kirkcaldy, Fife, Scotland, UK.

Objective: Parotid incidentalomas on fluorodeoxyglucose positron emission tomography/computed tomography imaging are rare. A systematic review was performed to assess their aetiology and association with scanning indication, and to develop an evidence-based algorithm for their management.

Methods: A literature search was performed on 25 August 2020 using the keywords 'incidentaloma', 'incidental finding', 'parotid', 'parotid gland', 'salivary gland' and 'head and neck'. Read More

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September 2021

Deep Learning for Differentiating Benign From Malignant Parotid Lesions on MR Images.

Front Oncol 2021 23;11:632104. Epub 2021 Jun 23.

Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.

Purpose/objectivess: Salivary gland tumors are a rare, histologically heterogeneous group of tumors. The distinction between malignant and benign tumors of the parotid gland is clinically important. This study aims to develop and evaluate a deep-learning network for diagnosing parotid gland tumors the deep learning of MR images. Read More

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Epithelial-Myoepithelial Carcinoma of the Submandibular Gland: Case Report.

J Nippon Med Sch 2021 ;88(3):238-241

Department of Otorhinolaryngology, Shanghai Tenth People's Hospital, Tongji University.

Epithelial-myoepithelial carcinoma (EMC) is a rare malignant salivary gland tumor that occurs mostly in the parotid gland. We report a case of EMC of the submandibular gland in a young man. The patient was aware of a slow-growing mass in the right submandibular gland for 1 year. Read More

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November 2021

[Performance of the magnetic resonance imaging in parotid gland tumor histopathology].

Pan Afr Med J 2021 4;39:10. Epub 2021 May 4.

Département d´Oto-rhino-laryngologie, Hôpital Tahar Sfar Mahdia, Mahdia, Tunisia.

Introduction: salivary gland tumors mainly occur in the parotid gland. These tumors are rare but are characterized by histological heterogeneity, thus posing diagnostic challenges. Magnetic resonance imaging (MRI) is currently the most reliable imaging test for the evaluation of these tumors. Read More

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