ABSTRACT
Objective:To construct and evaluate a parotid mass malignancy risk model based on ultrasound image characteristics and clinical features of parotid masses.Methods:Ultrasound images and clinical features of 214 patients with parotid masses in the First People′s Hospital of Foshan were retrospectively collected from June 2018 to August 2020. The pathology results were taken as the golden standard. All the clinical features and ultrasound image features were first screened using regression analysis, and then the screened features were used to build a prediction model.Results:Malignant tumors of the parotid gland appeared on ultrasound as hypoechoic solid masses with or without abnormal cervicofacial lymph nodes with poorly defined borders and irregular morphology. Multifactorial analysis showed that facial nerve function, cervicofacial lymph node abnormalities, maximum diameter, morphology and borders of the mass were independent predictors of the risk of malignant parotid masses. A Nomogram prediction model was established using the above 5 indicators, and the results showed a concordance index(C-index) of 0.896 (95% CI=0.834-0.958) for Nomogram. The standard curve showed good agreement between the predictive effect of Nomogram and the actual situation of benign and malignant parotid swellings, with an internally validated C-index of 0.878. Conclusions:Ultrasound is of great value in identifying benign and malignant parotid tumors. The Nomogram model using ultrasound image features and clinical characteristics can assess the biocharacteristics of parotid masses, and the model shows high accuracy in predicting the risk of malignancy of parotid masses.
ABSTRACT
Majority of the tumour of parotid gland is benign in nature. Neurogenic origin of tumor is a rare entity. If it occurs, the tumour usually arises from the main trunk. A well encapsulated mass originated deep to the deep lobe of parotid may manifest itself like a typical pleomorphic adenoma. We reported a case of middle-aged man with infratemporal neurofibroma presenting with asymptomatic parotid mass.
ABSTRACT
Tumoração parotídea é uma apresentação clínica comum nos estudos de imagem de cabeça e pescoço, entretanto, a sua origem decorrente de afecções vasculares é rara. Apresentamos relato de caso de fístula arteriovenosa parotídea, dando ênfase aos achados angiográficos e aos aspectos terapêuticos do tratamento endovascular.
Parotid mass is a common clinical feature in head and neck imaging,however, this presentation is rarely encountered as vascularanomalies. We present a case of arteriovenous fistula in the parotidregion, giving emphasis to its angiographic findings and tothe interventional radiology therapeutics aspects, considering theendovascular approach as the first line treatment.
Subject(s)
Humans , Female , Young Adult , Angiography/methods , Embolization, Therapeutic/methods , Arteriovenous Fistula/therapy , Parotid Gland/pathology , Diagnosis, Differential , Ultrasonography, Doppler/methodsABSTRACT
Salivary duct carcinoma is a high-grade adenocarcinoma arising from the ductal epithelium and has very low prevalence. We report a case of salivary duct carcinoma in high risk group with satisfactory result. A 65-year-old male was referred to our clinic complaining of mass on Rt. cheek. Preoperative CT and MRI shows 2.0x1.9cm sized multilobulated, cystic mass on the superficial lobe of Rt. parotid gland and multiple lymph node enlargement thorough the Rt. internal jugular chain. Total parotidectomy and modified radical neck dissection with adjuvant radiation therapy was performed. Pathologic result was salivary duct carcinoma and resection margin was free. Postoperative radiation therapy with 6400cGy(200cGyx 12 fx) was performed. During the 24-months of follow up periods, recurrence or complications associated with operation and radiation therapy was not observed. Salivary duct carcinoma is rare disease with very poor prognosis. Lymph node metastasis is commonly accompanied at the time of diagnosis. Distant metastasis is the most common cause of death. Total parotidectomy, radical neck disssection and adjuvant radiation therapy can be the appropriate modality for the control of the salivary duct carcinoma especially in high risk group.