Anterior Skull Base Tumors. Группа авторов

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Anterior Skull Base Tumors - Группа авторов Advances in Oto-Rhino-Laryngology

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      Michelle Williams, MD

      Department of Pathology, The University of Texas MD Anderson Cancer Center

      1515 Holcombe Blvd, Unit 85

      Houston, TX 77030 (USA)

      E-Mail [email protected]

      Nicolai P, Bradley PJ (eds): Anterior Skull Base Tumors. Adv Otorhinolaryngol. Basel, Karger, 2020, vol 84, pp 28–45 (DOI: 10.1159/000457923)

      ______________________

      Roberto Maroldi Andrea Borghesi Marco Ravanelli Salvatore Golemi Davide Farina

      Department of Radiology, University of Brescia, Brescia, Italy

      ______________________

      Abstract

      Anterior skull base (ASB) tumors can be classified into three groups according to their site of origin: (1) sinonasal neoplasms involving or extending through the anterior cranial base; (2) neoplasms which arise from the bony framework of the base itself; (3) neoplasms originating from adjacent intracranial structures. With few exceptions, most of these tumors have a non-specific appearance on CT and MRI, which limits the role of imaging in terms of characterization. However, treatment planning (transnasal endoscopic surgery in particular) mostly depends upon the tumor map, exploiting the potential of modern cross-sectional imaging. As a result, the radiologist who has to evaluate a neoplasm involving the ASB needs to be fully aware of all the technical solutions available and the specific strengths/weaknesses of the different imaging techniques. Knowledge of radiological anatomy (and its variants) is also essential, which includes the ability to translate the CT appearance of structures into the equivalent MR signal (and vice versa). These main prerequisites have to be combined with up-to-date knowledge of treatment options and surgical procedures in order to be able to create a reporting checklist covering all the aspects that are essential for clinical decision making.

      © 2020 S. Karger AG, Basel

      With the exception of a few distinct benign histologies, such as osteoma, juvenile angiofibroma, inverted papilloma, and meningioma, the majority of sinonasal and skull base tumors have non-specific imaging features. Therefore, though imaging can help to narrow the differentials, the diagnosis of a suspicious lesion requires biopsy. In addition, besides discriminating benign and malignant neoplasms, histopathological diagnosis has a second key role: the histologic type may determine surgical versus non-surgical management [1].

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