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[Tumors of the parapharyngeal space. Topographical anatomy, diagnosis, therapy, literature review].

The borders of the parapharyngeal space are formed of fasciae of muscular tissue. Its lateral border is formed by the bone of the mandible, while its cranial border is formed by the petrous bone. The initial symptoms of parapharyngeal tumors are diagnostically volatile because of the soft tissue contents of the parapharyngeal borders. For diagnostic reasons, it has to be decided whether to extirpate tumor immediately in order to obtain a specimen for histological evaluation or whether extensive presurgical examinations are necessary. Aside from multiple serological investigations for infectious diseases, these include all kinds of noninvasive morphological procedures such as CT scan, MR scan, transcutaneous and endoscopic B-mode sonography. In addition, invasive procedures such as arterial angiographies and the taking of specimens may be necessary in some cases.