scholarly journals Ultrasonography techniques in the preoperative diagnosis of parotid gland tumors – an updated review of the literature

2020 ◽  
Author(s):  
Sebastian Stoia ◽  
Grigore Băciuț ◽  
Manuela Lenghel ◽  
Radu Badea ◽  
Mihaela Băciuț ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Parotid Gland ◽  
Preoperative Diagnosis ◽  
Complete Characterization ◽  
Contrast Enhanced Ultrasound ◽  
Parotid Gland Tumors ◽  
Parotid Tumors ◽  
Superficial Lobe ◽  
Contrast Enhanced ◽  
Conventional Ultrasound

Preoperative diagnosis of parotid tumors plays a crucial role in selecting and planning the surgical treatment. Ultrasound (US) with its modern techniques can contribute to the differential diagnosis of parotid tumors. This paper aims to achieve a comprehensive review of the ultrasound techniques used in the differential diagnosis of parotid tumors, based on the latest literature data. Considering that most parotid gland tumors are located in the superficial lobe, US is frequently the first imaging technique used for the diagnosis of parotid tumors. Sonoelastography can provide additional data on the elasticity of parotid tumors, but there is an overlap between malignant and benign parotid tumors parameters. Contrast-enhanced ultrasound adds value to conventional ultrasound and allows a more complete characterization of parotid tumors. Many authors have reported promising results using contrast-enhanced ultrasound in the differential diagnosis of parotid tumors. Multiparametric ultrasound with a careful and systematic approach usually allows an accurate differential diagnosis of parotid tumors.

Huge Lipoma of the Right Parotid Gland: Case Report and Review of 42 Cases

2016 ◽  
Vol 95 (1) ◽  
pp. E8-E13 ◽  
Author(s):  
Timuçin Baykul ◽  
M. Asım Aydın ◽  
Yavuz Fındık ◽  
Derya Yıldırım
Keyword(s):  
Differential Diagnosis ◽  
Parotid Gland ◽  
Preoperative Diagnosis ◽  
Soft Mass ◽  
Parotid Region ◽  
Lipomatous Tumor ◽  
Parotid Tumors ◽  
Superficial Lobe ◽  
The Right

Lipomas are rarely found in the parotid gland region. Because of their rarity at this site, they are not often considered in the differential diagnosis of parotid tumors. The parotid lipoma is a slowly growing, asymptomatic, freely movable, soft mass. Preoperative diagnosis is generally difficult. We present a case of a slowly enlarging mass of the parotid region in a 44-year-old man that proved to be a lipomatous tumor of the parotid gland. We also review 42 other cases from the literature. Our patient's huge tumor was located in the superficial lobe of the gland, and a parotidectomy with preservation of the facial nerve was performed. There was no complication or recurrence of the tumor after a follow-up of 1 year.

Monitoring parotid gland tumors with a new perfusion software for contrast-enhanced ultrasound

2014 ◽  
Vol 58 (1) ◽  
pp. 261-269 ◽  
Author(s):  
Laura V. Klotz ◽  
Michael Ingrisch ◽  
Martin E. Eichhorn ◽  
Olivier Niemoeller ◽  
Vanessa Siedek ◽  
...  
Keyword(s):  
Parotid Gland ◽  
Contrast Enhanced Ultrasound ◽  
Parotid Gland Tumors ◽  
Contrast Enhanced

scholarly journals Histogram analysis of dynamic contrast-enhanced magnetic resonance imaging in the differential diagnosis of parotid tumors

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Shiyu Xiang ◽  
Jiliang Ren ◽  
Zhipeng Xia ◽  
Ying Yuan ◽  
Xiaofeng Tao
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Parotid Gland ◽  
Benign Tumors ◽  
Resonance Imaging ◽  
Dce Mri ◽  
Dynamic Contrast Enhanced ◽  
Parotid Gland Tumors ◽  
Parotid Tumors ◽  
Contrast Enhanced

Abstract Objective Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) histograms were used to investigate whether their parameters can distinguish between benign and malignant parotid gland tumors and further differentiate tumor subgroups. Materials and methods A total of 117 patients (32 malignant and 85 benign) who had undergone DCE-MRI for pretreatment evaluation were retrospectively included. Histogram parameters including mean, median, entropy, skewness, kurtosis and 10th, 90th percentiles were calculated from time to peak (TTP) (s), wash in rate (WIR) (l/s), wash out rate (WOR) (l/s), and maximum relative enhancement (MRE) (%) mono-exponential models. The Mann–Whitney U test was used to compare the differences between the benign and malignant groups. The diagnostic value of each significant parameter was determined on Receiver operating characteristic (ROC) analysis. Multivariate stepwise logistic regression analysis was used to identify the independent predictors of the different tumor groups. Results For both the benign and malignant groups and the comparisons among the subgroups, the parameters of TTP and MRE showed better performance among the various parameters. WOR can be used as an indicator to distinguish Warthin’s tumors from other tumors. Warthin’s tumors showed significantly lower values on 10th MRE and significantly higher values on skewness TTP and 10th WOR, and the combination of 10th MRE, skewness TTP and 10th WOR showed optimal diagnostic performance (AUC, 0.971) and provided 93.12% sensitivity and 96.70% specificity. After Warthin’s tumors were removed from among the benign tumors, malignant parotid tumors showed significantly lower values on the 10th TTP (AUC, 0.847; sensitivity 90.62%; specificity 69.09%; P < 0.05) and higher values on skewness MRE (AUC, 0.777; sensitivity 71.87%; specificity 76.36%; P < 0.05). Conclusion DCE-MRI histogram parameters, especially TTP and MRE parameters, show promise as effective indicators for identifying and classifying parotid tumors. Entropy TTP and kurtosis MRE were found to be independent differentiating variables for malignant parotid gland tumors. The 10th WOR can be used as an indicator to distinguish Warthin’s tumors from other tumors.

scholarly journals Differential Diagnosis of Parotid Lipoma in a Breast Ca Patient

2017 ◽  
Vol 2017 ◽  
pp. 1-4
Author(s):  
Melda Misirlioglu ◽  
Yagmur Yilmaz Akyil ◽  
Mehmet Zahit Adisen ◽  
Alime Okkesim
Keyword(s):  
Differential Diagnosis ◽  
Parotid Gland ◽  
Surgical Intervention ◽  
Benign Tumors ◽  
Radiographic Appearance ◽  
Parotid Tumors ◽  
Superficial Lobe ◽  
Rare Location ◽  
Mandibular Region ◽  
Posterior Area

Lipomas are common benign tumors usually detected on the torso, neck, upper thighs, and upper arms. However, they are rarely found in the parotid gland region. Because of their rarity at this site, they are not often considered in the differential diagnosis of parotid tumors. This report describes a rare case of a lipoma in the superficial lobe of parotid gland. A 71-year-old female patient admitted to our department complaining about swelling and pain in the posterior area of the left mandibular region since one month. Her medical history included mastectomy after breast CA fifteen years ago. Clinical examination revealed a smooth-surfaced, soft, and painful mass, with well-defined margins in the left mandibular region. Differential diagnosis of metastasis, inflammatory neck swellings, and benign salivary gland tumors were considered for the patient. Advanced imaging methods such as ultrasonography and contrast tomography revealed that the lesion was a lipoma of parotid gland. A surgical intervention under general anesthesia was planned for the removal of the mass; however patient refused the surgical treatment. Patient was placed on six-month periodic recall. This article reviews the radiographic appearance and differential diagnoses of lipoma in this rare location.

Perfusion characteristics of parotid gland tumors evaluated by contrast-enhanced ultrasound

2013 ◽  
Vol 82 (12) ◽  
pp. 2227-2232 ◽  
Author(s):  
Laura V. Klotz ◽  
Robert Gürkov ◽  
Martin E. Eichhorn ◽  
Vanessa Siedek ◽  
Eike Krause ◽  
...  
Keyword(s):  
Parotid Gland ◽  
Contrast Enhanced Ultrasound ◽  
Parotid Gland Tumors ◽  
Contrast Enhanced
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