Resumen

VALENZUELA P, Raúl  y  EBENSPERGUER P, Evelyn. BASE DE CRANEO: ANATOMIA Y PATOLOGIA TUMORAL. REVISION CONCEPTUAL. Rev. chil. radiol. [online]. 2002, vol.8, n.4, pp.170-176. ISSN 0717-9308.  http://dx.doi.org/10.4067/S0717-93082002000400006.

Objective. Skull Base Tumors (SBT) span a spectrum from congenital lesions to malignant neoplasms The purpose of this study was to summarize the most relevant anatomical landmarks and to display and organize in a simple manner the SBT and perineural tumoral spread (PTS). Materials and methods. The study displays a selection of cases selected based on teaching value gathered by the author in the 1997-2002 period. Results. SBT can be classified in three main groups: 1-Intrinsic SBT: includes Chordoma, Chondrosarcoma, Meningioma, Neural Sheath Tumors and Metastasic Lesions. 2- SBT spreading from below: Includes Nasopharyngeal Carcinoma, Nasopharyngeal Juvenile Angiofibroma and Paranasal Sinus Tumors. 3-SBT from above: It is refers mainly to Pituitary gland macroadenoma. PTS occurs most commonly associated with adenoid cystic and squamous cell carcinomas originated at the Head and Neck region. Most commonly involves nV and nVII. The most important pathway of PTS through the Skull Base is the maxillary division of the trigeminal nerve (nV2). Conclusion. An adequate knowledge of the anatomy, pathology and spread patterns is an important tool for therapy planning and follow-up care

Palabras clave : Neoplasm; Skull base.

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