Results 201 to 210 of about 6,571 (239)
Some of the next articles are maybe not open access.
Innervation of the Endolymphatic Sac
Archives of Otolaryngology - Head and Neck Surgery, 1992Previous studies suggest that the endolymphatic sac plays an important role in the homeostasis of endolymph. Factors that influence blood flow in the sac may affect its function. This blood flow may be influenced by autonomic innervation; however, no such innervation has been demonstrated.
Andrew Baxter +4 more
openaire +3 more sources
Histopathology, 1998
This review article surveys clinical and pathological literature on endolymphatic sac tumours (ELST) and summarizes characteristics that describe the entity.ELST are rare neuroectodermal neoplasms in the petrous bone, originating from inner ear structures. They can be encountered sporadically or in von Hippel–Lindau disease.
Benedikt Volk +2 more
openaire +3 more sources
This review article surveys clinical and pathological literature on endolymphatic sac tumours (ELST) and summarizes characteristics that describe the entity.ELST are rare neuroectodermal neoplasms in the petrous bone, originating from inner ear structures. They can be encountered sporadically or in von Hippel–Lindau disease.
Benedikt Volk +2 more
openaire +3 more sources
Otolaryngologic Clinics of North America, 1994
Endolymphatic sac enhancement surgery has proved, over the last several decades, to be a conservative and relatively safe procedure for patients in whom extensive empirical medical therapy has failed. The operation can usually be done as an outpatient procedure or with a one-night postoperative stay, and it has relatively low morbidity.
Hamed Sajjadi, Michael M. Paparella
openaire +3 more sources
Endolymphatic sac enhancement surgery has proved, over the last several decades, to be a conservative and relatively safe procedure for patients in whom extensive empirical medical therapy has failed. The operation can usually be done as an outpatient procedure or with a one-night postoperative stay, and it has relatively low morbidity.
Hamed Sajjadi, Michael M. Paparella
openaire +3 more sources
Otolaryngologic Clinics of North America, 2015
Endolymphatic sac tumors (ELST) are slow-growing, locally aggressive, low-grade malignancies that originate from the epithelium of the endolymphatic duct and sac. ELST often present with sensorineural hearing loss, tinnitus, and vertigo, which may mimic Meniere disease. Large tumors may present with additional cranial neuropathies.
Cameron C. Wick +3 more
openaire +3 more sources
Endolymphatic sac tumors (ELST) are slow-growing, locally aggressive, low-grade malignancies that originate from the epithelium of the endolymphatic duct and sac. ELST often present with sensorineural hearing loss, tinnitus, and vertigo, which may mimic Meniere disease. Large tumors may present with additional cranial neuropathies.
Cameron C. Wick +3 more
openaire +3 more sources
The Journal of Laryngology & Otology, 2003
We present a case of a papillary tumour of the petrous bone. The established terminology for this rare neoplasm is endolymphatic sac tumour (ELST) but the true origin remains controversial. ELSTs are associated with von Hippel-Lindau disease. They are locally invasive, highly vascular and often require endovascular embolization prior to surgery.
P. S. Richards, A. G. Clifton
openaire +3 more sources
We present a case of a papillary tumour of the petrous bone. The established terminology for this rare neoplasm is endolymphatic sac tumour (ELST) but the true origin remains controversial. ELSTs are associated with von Hippel-Lindau disease. They are locally invasive, highly vascular and often require endovascular embolization prior to surgery.
P. S. Richards, A. G. Clifton
openaire +3 more sources
Calcium Transport in the Endolymphatic Sac [PDF]
ORL, 1986 Ca++ activity and DC potential were measured in vivo in the endolymphatic sac (ES) of guinea pigs by means of double-barrelled ion-sensitive microelectrodes. We found a positive DC potential of 14 mV and a Ca++ activity of 4.7 X 10(-4) M. Anoxia induced a decrease in the DC potential and an increase in Ca++ activity; however, no negative DC potential ...
O Ninoyu, C Morgenstern
openaire +2 more sources
Neurosurgery, 1995
The endolymphatic sac is part of the membranous labyrinth; it plays an important role in the hearing mechanism. Injury to the endolymphatic sac may, over time, severely compromise hearing. The endolymphatic sac is located in a duplication of the dura of the posterior aspect of the petrous pyramid and is, therefore, in the surgical field of many ...
Ammirati, M +5 more
openaire +4 more sources
The endolymphatic sac is part of the membranous labyrinth; it plays an important role in the hearing mechanism. Injury to the endolymphatic sac may, over time, severely compromise hearing. The endolymphatic sac is located in a duplication of the dura of the posterior aspect of the petrous pyramid and is, therefore, in the surgical field of many ...
Ammirati, M +5 more
openaire +4 more sources
Archives of Otolaryngology - Head and Neck Surgery, 1969
THE SURGICAL treatment of Meniere's disease must be based as far as possible on physiopathological concepts and must take into account all the anatomical and pathological data published to date. Meniere's disease corresponds to an increase in the pressure of the endolymph in comparison with that of the perilymph. It is, therefore, probably conditioned
openaire +3 more sources
THE SURGICAL treatment of Meniere's disease must be based as far as possible on physiopathological concepts and must take into account all the anatomical and pathological data published to date. Meniere's disease corresponds to an increase in the pressure of the endolymph in comparison with that of the perilymph. It is, therefore, probably conditioned
openaire +3 more sources
Presence of Glycosaminoglycans in the Endolymphatic Sac
Acta Oto-Laryngologica, 1997Earlier morphological investigations have revealed that the endolymph, which is present in the endolymphatic sac (ES) seems to differ from that found elsewhere in the labyrinth, in that it contains a stainable substance. Histochemical investigations indicate that this substance is rich in glycosaminoglycans (GAGs).
M. HULTCRANTZ +2 more
openaire +4 more sources
The endolymphatic sac: Anatomical considerations
The Laryngoscope, 1979AbstractSince Portmann suggested surgical drainage of the endolymphatic sac in 1927, several similar procedures have been described. These procedures all share a common problem: the endolymphatic sac must be identified without injuring the labyrinthine structures or the facial nerve.Anson and Donaldson have provided the otologist with a detailed and ...
Richard A. Chole +2 more
openaire +3 more sources