Paragangliomas of the temporal bone are vascular benign tumours that arise from the paraganglia dislocated in differentpartsof the body.
Temporal bone Paragangliomas are classifiedaccording to Fisch in 3 classes:
CLASS A: Tympanic paragangliomas, located in the tympanic cavity;
CLASS B: Located in the tympanic cavity with secondary invasion of the attic and the mastoid;
CLASS C: is the most important for diagnostic and therapeutic implications and is divided into the sub-groups C1-C2-C3-C4 according to the degree of invasion of the neurovascular structures of the temporal bone and, in particular, the internal carotid artery.
CLASS D: is generally associated to class C and identifies the tumour component with intracranial extradural (De) or intradural (Di) localization. While for type A and B paragangliomas the therapy is surgery, for those of class C the therapeutical implications must be evaluated attentively with the patient in order to carry out the best therapy with the lowest incidence of complications.
In the Operative Unit ORL a special protocol is implemented for type C paragangliomas which is shared with the patient in the Counselling phase in order to identify the specific treatment most suited for the best maintenance of life quality. Our treatment protocol is shown next in the presentation.