[Intravascular growth of the tympanojugular paraganglioma in the internal jugular vein]

The different forms of intrajugular extension of tympanojugular paraganglioma, their symptoms, signs, diagnosis, differential diagnosis and hormonal activity are described. The craniocervical venous system requires particular emphasis in descriptions of surgical technique. Intravascular growth of a paraganglioma deserves particular attention because it may be overlooked, and it may be necessary to take precautions during surgical resection.