The effectiveness of MRI and CT with intravenous contrast in the assessment of carotid chemodectoma at the preoperative stage and in dynamics after surgery

Background. Carotid chemodectoma is rare, slow growing, richly vascularized lesion. It is a single unilateral or bilateral tumor, localized mainly in the area of the carotid triangle. Different forms and bilateral cases are also known. A complex of radiological studies, including MRI and CT with intravenous contrast, can help in determining the surgical treatment strategy, as well as treatment monitoring. Objective. To determine the role of MRI and CT with intravenous contrast in the assessment of carotid chemodectoma at the preoperative stage and at post-surgery monitoring. Materials and Methods. We analyzed the results of a comprehensive radiological examination of 12 patients with suspected carotid chemodectoma, including MRI and MSCT with intravenous contrast, and X-ray angiography. All patients got operated, the results were confirmed by histological and immunohistochemical study. Results. Multislice computed tomography, supplemented by CT angiography, allows visualizing chemodectoma, determining its size, shape, structure, and relations with the nearby vessels. In addition to size, shape, structure of chemodectoma MRI can provide a detailed picture of the internal vascular network, the walls of adjacent vascular structures, as well as the soft tissue structures of the peripharyngeal area, which is helpful for vascular surgeons in surgical intervention. It was not possible to determine the histogenesis of the tumor according to the methods of radiation diagnostics. Conclusions. In order to determine the option of surgical treatment of carotid chemodectomas and reduce the risk of intraoperative complications at the preoperative stage, it is necessary to carry out the entire spectrum of radiation diagnostic methods (including ultrasound, MSCT, MRI and X-ray angiography).

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