Sonographic Findings of Nasopharyngeal Carcinoma and Its Involvement in the Parapharyngeal Space

Dai, Peng; Zhu, Shang-Yong; Xu, Yuan-Bing; Wu, Yafei; Lun, Hai-Mei; Wei, Yu-Ya

doi:10.7863/ultra.32.6.1041

Cited by 5 publications

(6 citation statements)

References 21 publications

(26 reference statements)

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“…Few studies have assessed laryngopharyngeal or hypopharyngeal cancer using ultrasonography . Some authors demonstrated that T1 and T2 pharyngeal cancers were detectable using ultrasonography . However, in our study, T1 and T2 tumors, which are mucosal lesions, were not observable by any of our experts.…”

Section: Discussioncontrasting

confidence: 88%

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Usefulness of ultrasound for assessing the primary tumor of hypopharyngeal carcinoma

Fukuhara

Matsuda

Hattori

et al. 2017

Laryngoscope Investig Oto

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ObjectivesTo clarify the usefulness of ultrasonography for detecting hypopharyngeal cancer.Study DesignCross‐sectional study.MethodsThe study included 95 patients who underwent pre‐treatment ultrasonography. We evaluated the usefulness of ultrasonography for detecting primary hypopharyngeal carcinoma of each T stage and subsite, and for assessing extrahypopharyngeal invasion. Additionally, we determined the efficacy of color Doppler for evaluating primary hypopharyngeal carcinoma.ResultsThe patients comprised 93 men and 2 women with a mean age of 67.5 years. The T stage (primary tumors) was T1 in 29 patients, T2 in 22, T3 in 9, and T4 in 35. Primary sites with a T stage over T3 were detected using ultrasonography in 17 patients.Regarding primary subsites, postcricoid tumors were assessed most easily (64%), while posterior wall tumors were the most difficult to assess (25%). In 15 of 17 patients, the evaluation of extrahypopharyngeal invasion by ultrasonography matched up precisely with computed tomography findings. In addition, abnormally increased blood flow in primary hypopharyngeal cancers was recognized by color Doppler, and could be used to predict subsites.ConclusionsCancers at T3 and T4 hypopharyngeal primary tumors and their extrahypopharyngeal invasion were detectable using ultrasonography. Furthermore, ultrasonography was useful for assessing postcricoid tumors that were difficult to observe by flexible laryngoscopy.Level of Evidence4

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Section: Discussioncontrasting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Usefulness of ultrasound for assessing the primary tumor of hypopharyngeal carcinoma

Fukuhara

Matsuda

Hattori

et al. 2017

Laryngoscope Investig Oto

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“…A previous study indicated that ultrasonography (US) may be a useful tool for diagnosing NPC and for defining the relationship between a tumor and the parapharyngeal space [7]. By using the parapharyngeal space and parotid gland as an acoustic window, along with the strong echo of the nasopharynx gas as a boundary, US has been found to provide anatomic details of the nasopharynx, including mucosal changes.…”

Section: Introductionmentioning

confidence: 99%

“…By using the parapharyngeal space and parotid gland as an acoustic window, along with the strong echo of the nasopharynx gas as a boundary, US has been found to provide anatomic details of the nasopharynx, including mucosal changes. Specifically, US has been shown to distinguish the normal anatomy of the nasopharynx and parapharyngeal space, the presence of NPC, and the extent of NPC in the parapharyngeal space [7]. The latter is usually suspected if the echo of the soft tissue is interrupted or distorted, if the tumor is distorted or surrounded by the internal carotid artery, if the acoustic shadow of the styloid process disappears, or if the margin of the parotid gland is inseparable from the tumor [7].…”

Section: Introductionmentioning

confidence: 99%

“…Specifically, US has been shown to distinguish the normal anatomy of the nasopharynx and parapharyngeal space, the presence of NPC, and the extent of NPC in the parapharyngeal space [7]. The latter is usually suspected if the echo of the soft tissue is interrupted or distorted, if the tumor is distorted or surrounded by the internal carotid artery, if the acoustic shadow of the styloid process disappears, or if the margin of the parotid gland is inseparable from the tumor [7]. However, due to the concern that imaging studies may not detect small mucosal tumors, US imaging has not been validated as an initial diagnostic test for NPC.…”

Section: Introductionmentioning

confidence: 99%

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The Diagnostic Accuracy of Ultrasonography versus Endoscopy for Primary Nasopharyngeal Carcinoma

et al. 2014

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ObjectiveTo compare the accuracy of ultrasonography (US) with the current clinical standard of endoscopy for a diagnosis of nasopharyngeal carcinoma (NPC).MethodsA total of 150 patients suspected of having NPC underwent US and endoscopy. A diagnosis was obtained from an endoscopic biopsy collected from each suspected tumor and was compared with a biopsy obtained from a normal nasopharynx. The diagnostic accuracy of US and endoscopy for NPC was evaluated using receiver operating curve (ROC) analysis performed by MedCalc Software.ResultsThe sensitivity, specificity, and accuracy of US versus endoscopy for this cohort were 90.1%, 84.8%, and 87.3% for US, and 88.7%, 97.5%, and 93.3% for endoscopy, respectively. Both US and endoscopy exhibited good diagnostic accuracy for NPC with area under the curve (AUC) values of 0.929 and 0.938, respectively. However, this difference was not significant (Z = 0.36, P = 0.72).ConclusionUS is a useful tool for the detection of tumors in endoscopically suspicious nasopharynx tissues, and also for the detection of subclinical tumors in endoscopically normal nasopharynx tissues.

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Sonography of Parapharyngeal Masses

Tomblinson

Hinni

2019

Ultrasonography of the Head and Neck

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Sonographic Findings of Nasopharyngeal Carcinoma and Its Involvement in the Parapharyngeal Space

Abstract: These promising initial data indicate that sonography may be a useful tool for diagnosing nasopharyngeal carcinoma and defining the relationship between the tumor and the parapharyngeal space.

Cited by 5 publications

References 21 publications

Usefulness of ultrasound for assessing the primary tumor of hypopharyngeal carcinoma

Usefulness of ultrasound for assessing the primary tumor of hypopharyngeal carcinoma

The Diagnostic Accuracy of Ultrasonography versus Endoscopy for Primary Nasopharyngeal Carcinoma

Sonography of Parapharyngeal Masses

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