منابع مشابه
Tympanic paraganglioma: two cases.
Paragangliomas originate from glomus bodies which are non-working temporal bone chemoreceptors, derived from neuroectodermal cells of the neural crest. Tympanic paragangliomas have pulsatile tinnitus as its most frequent symptom, followed by conductive hearing loss, otalgia and ear fullness. Some patients may present vertigo and otorhagia. Our goal is to present two cases of tympanic paragangli...
متن کاملTympanic paraganglioma with extension into the Eustachian tube and nasopharynx: a case report.
Tympanic paragangliomas usually present as a vascular middle ear mass, with the most common presenting symptoms being pulsatile tinnitus and hearing loss. We report an unusual case of a recurrent tympanic paraganglioma extending along the Eustachian tube and nasopharynx, presenting with recurrent epistaxis.
متن کاملTwo Mathematical Models for the Tympanic Membrane
In this project we present two mathematical models for the human tympanic membrane. The eardrum can be viewed as an example of the vibrating drum problem. In the first model, we treat the tympanic membrane as a rectangular region. In the second model the tympanic membrane is considered as a disk. Both models use a wave equations. We study the impact of changes in the membrane tension related to...
متن کاملDuodenal gangliocytic paraganglioma: report of two cases and review of literature.
We report two cases of Gangliocytic paraganglioma (GP), one of which was accompanied by lymph node metastasis. Histologically, the tumor was composed of three morphologically distinct cell populations: spindle cells, ganglion-like cells and epithelioid cells. The epithelioid cells were positive for cytokeratin (AE1/AE3), synaptophysin (Syn), chromogranin A (CgA), CD56 and progesterone receptor ...
متن کاملTympanic Paraganglioma With Extension Into the Eustachian Tube and Nasopharynx: A Case Report
Tympanic paragangliomas usually present as a vascular middle ear mass, with the most common presenting symptoms being pulsatile tinnitus and hearing loss. We report an unusual case of a recurrent tympanic paraganglioma extending along the Eustachian tube and nasopharynx, presenting with recurrent epistaxis. Paraganglioma timpánico con extensión a trompa de Eustaquio y nasofaringe: a propósito d...
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ژورنال
عنوان ژورنال: Brazilian Journal of Otorhinolaryngology
سال: 2007
ISSN: 1808-8694
DOI: 10.1016/s1808-8694(15)31140-x