Schwannoma of the sinonasal tract: case report with review of the literature

Lee, Chang Woo; Grammatopoulou, Viktoria; Bagwan, Izhar; Sunkaraneni, Vishnu

doi:10.1308/rcsann.2020.7104

Cited by 4 publications

(2 citation statements)

References 38 publications

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“… 5 , 15 , 16 Schwannoma appears on endoscopy as a large polypoid mass with a hyper-vascularized surface that usually fills the NC entirely ( Figure 3F ). 5 , 15 , 17 , 18 …”

Section: Discussionmentioning

confidence: 99%

“…5,15,16 Schwannoma appears on endoscopy as a large polypoid mass with a hyper-vascularized surface that usually fills the NC entirely (Figure 3F). 5,15,17,18 However, endoscopic evaluation has some limitations in diagnosing the NC mass lesions in clinical practice. First, a similar gross appearance between the different lesions makes it difficult to differentiate the pathology.…”

Section: 8%mentioning

confidence: 99%

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Diagnostic accuracy of clinical visual assessment using endoscopic images for nasal cavity mass lesions

Kwon,

2024

Science Progress

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Objectives: Discrimination of nasal cavity lesions using nasal endoscopy is challenging because of the differences in clinical manifestations and treatment strategies. We aimed to investigate the diagnostic accuracy of clinical visual assessment (CVA) of nasal cavity masses using endoscopic images and determine whether there is a difference according to pathologic class and the examiners’ experience. Methods: We collected pathologically confirmed endoscopic images of normal findings, nasal polyp (NP), benign tumor, and malignant tumor (each class contained 100 images) randomly selected. Eighteen otolaryngologists, including six junior residents, six senior residents, and six board-certified rhinologists classified the test set images into four classes of lesions by CVA. Diagnostic performance according to the pathologic class and the examiner's experience level was evaluated based on overall accuracy, F1-score, confusion matrix, and area under the receiver operating characteristic curve (AUC). Results: Diagnostic performance was significantly different according to the pathological class of nasal cavity mass lesions with the overall accuracy reported high in the order of normal, NP, benign tumor, and malignant tumor (0.926 ± 0.100; 0.819 ± 0.135; 0.580 ± 0.112; 0.478 ± 0.187, respectively), F1 score (0.937 ± 0.076; 0.730 ± 0.093; 0.549 ± 0.080; 0.554 ± 0.146, respectively) and AUC value (0.96 ± 0.06; 0.84 ± 0.07; 0.70 ± 0.05; 0.71 ± 0.08, respectively). The expert rhinologist group achieved higher overall accuracy than the resident group (0.756 ± 0.157 vs. 0.680 ± 0.239, p < .05). Conclusion: CVA for nasal cavity mass was highly dependent on the pathologic class and examiner's experience. The overall accuracy was reliably high for normal findings, but low in classifying benign and malignant tumors. Differential diagnosis of lesions solely based on nasal endoscopic evaluation is challenging. Therefore, clinicians should consider further clinical evaluation for suspicious cases.

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“… 5 , 15 , 16 Schwannoma appears on endoscopy as a large polypoid mass with a hyper-vascularized surface that usually fills the NC entirely ( Figure 3F ). 5 , 15 , 17 , 18 …”

Section: Discussionmentioning

confidence: 99%

Section: 8%mentioning

confidence: 99%

Diagnostic accuracy of clinical visual assessment using endoscopic images for nasal cavity mass lesions

Kwon,

2024

Science Progress

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Mesenchymal Tumors of the Head and Neck

Furlan,

Wenig

2024

Advances in Anatomic Pathology

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The majority of neoplasms of the head and neck are of epithelial origin primarily including mucosal squamous cell neoplasms (papillomas; squamous cell carcinoma) as well as salivary gland neoplasms. However, the full spectrum of mesenchymal neoplasms (benign and malignant) typically arising in soft tissue sites may also develop in superficial layers of the upper aerodigestive tract. The diversity of mesenchymal neoplasms arising in the head and neck is beyond the scope of this article, and our focus will be on some of the more common and/or diagnostic problematic mesenchymal tumors occurring in the sinonasal tract, oral cavity/odontogenic, pharynx, larynx, and neck.

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Clinicopathological Findings of Surgically Treated Nasal Cavity Schwannomas: A Case Series

Yaprak Bayrak,

Yaylacı,

Ozturk

2024

Ear Nose Throat J

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Objectives: Nasal cavity schwannomas are exceedingly rare, benign neoplasms that pose challenges in clinical differentiation from other nasal tumors. Methods: This study presents 5 cases of nasal cavity schwannoma treated surgically over a 10 year period, along with a review of the literature. Results: The most prevalent symptoms included unilateral nasal obstruction and intermittent nosebleeds. Tumors originated from various nasal sites, including the septum, middle conchae, lateral nasal wall, and alar mucosa. All surgeries were conducted transnasally, with 3 tumors excised en bloc, and the remaining two subjected to piecemeal resection. Ancient schwannoma was identified in 4 cases. No instances of recurrence were observed during the average 61 month follow-up period. Conclusions: The definitive diagnosis of schwannomas necessitates histopathological examination. An endoscopic approach to the nasal cavity, obviating the need for external intervention, proved highly effective and appropriate for both diagnosis and symptom alleviation.

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Schwannoma of the sinonasal tract: case report with review of the literature

Cited by 4 publications

References 38 publications

Diagnostic accuracy of clinical visual assessment using endoscopic images for nasal cavity mass lesions

Diagnostic accuracy of clinical visual assessment using endoscopic images for nasal cavity mass lesions

Mesenchymal Tumors of the Head and Neck

Clinicopathological Findings of Surgically Treated Nasal Cavity Schwannomas: A Case Series

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