Ultrasonography in the diagnosis of palatal tumors

Ishii, Junichi; Nagasawa, Hirokazu; Wadamori, Tadashi; Yamashiro, Masashi; Ishikawa, Hitoshi; Yamada, Takafumi; Miyakura, Takeshi; Amagasa, Teruo

doi:10.1016/s1079-2104(99)70292-1

Cited by 33 publications

(9 citation statements)

References 16 publications

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“…It is easy to use, less expensive, less time consuming, non-ionizing and suitable for peripheral location of the salivary gland enlargement. 6 In ultrasonography the electrical impulses are converted into high frequency sonic waves by transducer. Transducer is a device in the ultrasound scanner which can convert electrical energy into sonic energy.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound and Doppler evaluation of salivary gland pathology

Patange

Phatak

2016

Int J Res Med Sci

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Background: Lesions of salivary gland are very commonly encountered in clinical practice. Only by Clinical examination alone it is difficult to differentiate between them and know its exact cause and etiology. It would definitely benefit the patient as well as the doctor if they could get an idea of the exact type of lesion affecting the salivary gland. Hence, this study was undertaken to demonstrate as how high resolution ultrasound imaging and use of colour Doppler can be useful in evaluation of salivary gland lesions.Methods: Duration of study was1yearwith sample size of 30 patients. This study has been conducted in the department of Radiodiagnosis JNMC, Sawangi, Wardha all cases irrespective of age and sex referred to the department were evaluated. Aloka Prosound Alpha 7 USG machine with a high resolution probe linear transducer was used. The lesions were evaluated by high resolution real time ultrasound and colour Doppler.Results: Most of the patients were in the age group 41-50years and had male preponderance. Most presented with unilateral swelling which was tender and firm in consistency. Amongst the study group saladenitis was most frequent finding followed by pleomorphic adenoma and carcinoma. Pleomorphic adenoma was most common neoplasm having predilection for the parotid gland. Saladenitis was most common in submandibular gland. The commonest histopathological finding was pleomorphic adenoma.Conclusions: The study concludes that High resolution ultrasound can differentiate various salivary gland lesions. Addition with colour Doppler ultrasound can increase its diagnostic accuracy. High resolution ultrasound with colour Doppler sonography should be first line of imaging modality in suspected cases of salivary gland lesions.

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Section: Introductionmentioning

confidence: 99%

Ultrasound and Doppler evaluation of salivary gland pathology

Patange

Phatak

2016

Int J Res Med Sci

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“…Conventional radiographs have limitations, only being useful for screening lesions adjacent to mineralised tissue. This type of MRI does not employ ionising radiation and is one of the most indicated tests for the diagnosis of tumour lesions [67–73]. Considerable heterogeneity was also found among traditional MRI studies in the present meta-analysis, which might be accounted for by the various types of cancer assessed, different lesion sites and differences in calibration.…”

Section: Resultsmentioning

confidence: 78%

Meta-analysis of magnetic resonance imaging accuracy for diagnosis of oral cancer

et al. 2017

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ObjectiveTo establish the diagnostic accuracy of magnetic resonance imaging (MRI) as an auxiliary means for the diagnosis of oral cancer through a systematic review and meta-analysis. MethodsAn exhaustive search of publications from 1986 to 2016 was performed of Medline, Embase and Cochrane (and related databases), including grey literature. Primary diagnostic accuracy studies that assessed oral cancer (target condition) using MRI (index test) were included. Diagnostic threshold, sensitivity and meta-regression analyses were performed. A meta-analysis was performed using Meta-DiSc® v. 1.4 software. ResultsA total of 24 primary studies were assessed, comprising 1,403 oral cancer lesions. Nine studies used diffusion-weighted MRI, with a diagnostic odds ratio (DOR) of 30.7 (95% confidence interval [CI]: 12.7-74.3) and area under the curve (AUC) of 0.917 (95% CI: 0.915-0.918); seven studies used dynamic contrast-enhanced MRI, with a DOR of 48.1 (95%CI: 22.4-103.2) and AUC of 0.936 (95% CI: 0.934-0.937); and 13 studies used traditional MRI, with a DOR of 23.9 (95%CI: 13.2-43.3) and AUC of 0.894 (95% CI: 0.894-0.895). Metaregression analysis indicated that the magnetic field strength may have influenced the heterogeneity of the results obtained (p = 0.0233) using traditional MRI. Sensitivity analysis revealed a discrete reduction of inconsistency in some subgroups. ConclusionThe three types of MRI assessed exhibited satisfactory accuracy compared to biopsy. Considering the relevance of early treatment and screening and that better health care results in PLOS ONE | https://doi

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“…Ju et al 3 indicated that greater palatine foramen enlargement by CT was independent predictors of adenoid cystic carcinoma in palatal tumors using multivariate logistic analysis. Ishii et al 2 showed that the internal echo pattern on the ultrasonogram of a palatal tumor was found to reflect the pathologic structure of the tumor. On DWI, Yuan et al 4 showed that the optimal cut‐off ADC value to distinguish malignant from benign lesions was 1.02 × 10 −3 mm 2 s −1 , with a sensitivity of 87.5% and a specificity of 75.0%.…”

Section: Discussionmentioning

confidence: 99%

“…The palate is the most common site for minor salivary gland tumors because it is the location of approximately one‐half of the minor salivary glands which open into the oral cavity 1 . However, it is very difficult to make a correct diagnosis of a palatal salivary gland tumor by physical examination 2 . In recent years, computed tomography (CT) 3 and magnetic resonance imaging (MRI) 4 can be useful techniques for the preoperative evaluation of palatal lesions.…”

Section: Introductionmentioning

confidence: 99%

Diffusion‐weighted magnetic resonance imaging in the palatal tumors: Usefulness of apparent diffusion coefficient value for characterization of benign and malignant tumors

Oohashi

Mizuhashi

Sugawara

et al. 2020

Oral Science International

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Aim The aim of this study was to investigate the diffusion‐weighted magnetic resonance imaging (DWI) in the palatal tumors, especially usefulness of apparent diffusion coefficient (ADC) value for characterization of benign and malignant tumors. Materials and Methods Twenty‐four patients with palatal tumors (16 malignant tumors and 8 benign tumors) who underwent DWI for diagnosis of palatal lesions were included in this prospective study. DWI was performed on a 1.5 T unit, with b factor of 0 and 800 s/mm2; moreover, ADC maps were generated. ADC values were measured for the palatal tumors. The histopathological diagnoses were obtained by surgery in all cases. The ADC values of the palatal tumors were evaluated by one‐way repeated‐measures analysis of variance with Tukey's HSD test. A P value lower than .05 was considered as statistically significant. Results The mean ADC value of squamous cell carcinoma (1.10 ± 0.11 × 10−3 mm2 s−1) was significantly lower than that of pleomorphic adenoma (1.49 ± 0.41 × 10−3 mm2 s−1, P = .046) and another benign tumor (1.85 ± 0.40 × 10−3 mm2 s−1, P = .000). Conclusions ADC value derived from DWI could be useful for the characterization of benign and malignant palatal tumors.

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Ultrasonography in the diagnosis of palatal tumors

Cited by 33 publications

References 16 publications

Ultrasound and Doppler evaluation of salivary gland pathology

Ultrasound and Doppler evaluation of salivary gland pathology

Meta-analysis of magnetic resonance imaging accuracy for diagnosis of oral cancer

Diffusion‐weighted magnetic resonance imaging in the palatal tumors: Usefulness of apparent diffusion coefficient value for characterization of benign and malignant tumors

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