scholarly journals Turicella otitidis as an Unusual Agent Causing Palmoplantar Eczema: An Emerging Pathogen

2020 ◽  
Author(s):  
Dimitra Koumaki ◽  
Vasiliki Koumaki ◽  
Sotirios Boumpoucheropoulos ◽  
Alexander Katoulis ◽  
Panagiotis Bitados ◽  
...  
Keyword(s):  
New Species ◽  
Middle Ear ◽  
External Ear ◽  
Ear Canal ◽  
Emerging Pathogen ◽  
Case Presentation ◽  
Middle Ear Fluid ◽  
First Case ◽  
Potential Pathogen ◽  
A New Species

Introduction: Turicella otitidis, described as a new species over 20 years ago, has been isolated mainly from the external ear canal and middle ear fluid. Here, we report the first case of palmoplantar eczema related to T. otitidis. Case presentation: Here, we report the first case of palmoplantar eczema in a 74-year-old female related to T. otitidis. Conclusions: The question as to whether T. otitidis is a potential pathogen in cases of dyshidrotic eczema is still open, but this could be better elucidated if corynebacteria were speciated more often.

Effects of Eustachian Tube Ligation on Auditory Nerve Responses to Clicks

1978 ◽  
Vol 87 (1_suppl) ◽  
pp. 12-20 ◽  
Author(s):  
Michael L. Wiederhold ◽  
Serge A. Martinez ◽  
Robert E. C. Scott ◽  
Hugh O. Defries
Keyword(s):  
Hearing Loss ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Auditory Nerve ◽  
External Ear ◽  
Acoustic System ◽  
Ear Canal ◽  
Middle Ear Fluid ◽  
Middle Ear Pressure ◽  
Tube Ligation

Auditory nerve responses to condensation and rarefaction clicks were recorded from the external ear canal of cats using a closed acoustic system. Repeated control recordings from both ears formed a baseline for each of four animals used in this study. After a baseline had been established, the Eustachian tube on one side was ligated and serial recordings of N1 responses were performed for up to 140 days postligation. By comparing the shift which occurred in the N1 latency-vs-click level plots after ligation, the equivalent hearing loss was determined. In all cases where the Eustachian tube was successfully ligated, the loss was progressive for the first 20 days, then usually showed some transitory improvement. The loss stabilized after 60 days, varying from 15 to 40 dB in different animals. In addition to N1 recordings, serial tympanograms were also measured. These indicated negative middle ear pressure in the first two days postligation and the presence of middle ear fluid by one week postligation.

scholarly journals Syringoid eccrine carcinoma involving the external ear canal and middle ear, first case report in Latin America

2021 ◽  
Vol 18 ◽  
pp. 100262
Author(s):  
Santiago Hernández ◽  
Elisa Gutiérrez-Gómez ◽  
María Teresa Rodríguez-Ruiz ◽  
Mariam Carolina Rolón Cadena
Keyword(s):  
Latin America ◽  
Case Report ◽  
Middle Ear ◽  
External Ear ◽  
Ear Canal ◽  
External Ear Canal ◽  
First Case ◽  
Eccrine Carcinoma

scholarly journals Macroscopic description of the external and middle ear of paca (Cuniculus paca Linnaeus, 1766)

2015 ◽  
Vol 35 (6) ◽  
pp. 583-589 ◽  
Author(s):  
Leandro L. Martins ◽  
Ijanete Almeida-Silva ◽  
Maria Rossato ◽  
Adriana A.B. Murashima ◽  
Miguel A. Hyppolito ◽  
...  
Keyword(s):  
Tympanic Membrane ◽  
Middle Ear ◽  
Gross Anatomy ◽  
Experimental Models ◽  
Temporal Region ◽  
External Ear ◽  
Wild Animals ◽  
Ear Canal ◽  
Macroscopic Description ◽  
Mouse Ear

Abstract: Paca (Cuniculus paca), one of the largest rodents of the Brazilian fauna, has inherent characteristics of its species which can conribute as a new option for animal experimantation. As there is a growing demand for suitable experimental models in audiologic and otologic surgical research, the gross anatomy and ultrastructural ear of this rodent have been analyzed and described in detail. Fifteen adult pacas from the Wild Animals Sector herd of Faculdade de Ciências Agrárias e Veterinárias, Unesp-Jaboticabal, were used in this study. After anesthesia and euthanasia, we evaluated the entire composition of the external ear, registering and ddescribing the details; the temporal region was often dissected for a better view and detailing of the tympanic bulla which was removed and opened to expose the ear structures analyzed mascroscopically and ultrastructurally. The ear pinna has a triangular and concave shape with irregular ridges and sharp apex. The external auditory canal is winding in its path to the tympanic mebrane. The tympanic bulla is is on the back-bottom of the skull. The middle ear is formed by a cavity region filled with bone and membranous structures bounded by the tympanic membrane and the oval and round windows. The tympanic membrane is flat and seals the ear canal. The anatomy of the paca ear is similar to the guinea pig and from the viewpoint of experimental model has major advantages compared with the mouse ear.

Squamous Epithelium in the Middle Ear and Sinus

1994 ◽  
Vol 73 (1) ◽  
pp. 47-48
Author(s):  
Alper Tutkun ◽  
Caglar Batman ◽  
Cüneyt Üneri ◽  
Mehmet Ali Sehitoglu
Keyword(s):  
Middle Ear ◽  
Statistical Difference ◽  
Squamous Epithelium ◽  
Normal Skin ◽  
University Hospital ◽  
Control Group ◽  
Study Group ◽  
External Ear ◽  
Ear Canal ◽  
Superior Part

This study has been performed between December 1990—March 1991 in the Microsurgery laboratory of the Marmara University Hospital. Twelve healthy albino guinea pigs were used as a study group while the control group consists of three animals. The potentials for cholesteatoma formation of the squamous epithelium, namely the squamous epithelium of the posterior superior part of the external ear canal skin and normal skin, were investigated. Among 24 subjects who were implanted by canal skin, cholesteatoma was fanned in 21 of them. Likewise, 19 of 24 animals implanted by normal skin came out with cholesteatoma formation. Between these two types of epithelium, there is no statistical difference in cholesteatoma formation (p >0.5).

Side-Hole Suction for Ear Surgery

1979 ◽  
Vol 87 (1) ◽  
pp. 87-88 ◽  
Author(s):  
N. Wendell Todd
Keyword(s):  
Soft Tissue ◽  
Middle Ear ◽  
Surgical Trauma ◽  
External Ear ◽  
Ear Canal ◽  
Ear Surgery ◽  
Graft Placement ◽  
Side Hole ◽  
External Ear Canal

Surgical trauma to the soft tissue of the external ear canal and middle ear increases inflammation and scarring. A side-hole suction tip has been found to minimize suction-tip trauma, preclude the need to aspirate through synthetic sponge or cotton, and facilitate graft placement.

scholarly journals External ear canal cholesteatoma after ventilation tube insertion and mastoidectomy

2012 ◽  
Vol 69 (4) ◽  
pp. 363-366 ◽  
Author(s):  
Dragoslava Djeric ◽  
Milan Jovanovic ◽  
Ivan Baljosevic ◽  
Srbislav Blazic ◽  
Milanko Milojevic
Keyword(s):  
Tympanic Membrane ◽  
Middle Ear ◽  
Membrane Surface ◽  
Tube Placement ◽  
External Ear ◽  
Ventilation Tube ◽  
Ear Canal ◽  
Tube Insertion ◽  
Tissue Mass ◽  
External Ear Canal

Introduction. Etiopathogenetically, there are two types of chollesteatomas: congenital, and acquired. Numerous theories in the literature try to explain the nature of the disease, however, the question about cholesteatomas remain still unanswered. The aim of the study was to present a case of external ear canal cholesteatoma (EEC) developed following microsurgery (ventilation tube insertion and mastoidectomy), as well as to point ant possible mechanisms if its development. Case report. A 16-yearold boy presented a 4-month sense of fullness in the ear and otalgia on the left side. A year before, mastoidectomy and posterior atticotomy were performed with ventilation tube placement due to acute purulent mastoiditis. Diagnosis was based on otoscopy examination, audiology and computed tomography (CT) findings. CT showed an obliterative soft-tissue mass completely filled the external ear canal with associated erosion of subjacent the bone. There were squamous epithelial links between the canal cholesteatoma and lateral tympanic membrane surface. They originated from the margins of tympanic membrane incision made for a ventilation tube (VT) insertion. The position of VT was good as well as the aeration of the middle ear cavity. The tympanic membrane was intact and of normal appearance without middle ear extension or mastoid involvement of cholesteatoma. Cholesteatoma and ventilation tube were both removed. The patient recovered without complications and shortly audiology revealed hearing improving. Follow-up 2 years later, however, showed no signs of the disease. Conclusion. There could be more than one potential delicate mechanism of developing EEC in the ear with VT insertion and mastoidectomy. It is necessary to perform routine otologic surveillance in all patients with tubes. Affected ear CT scan is very helpful in showing the extent of cholesteatoma and bony defects, which could not be assessed by otoscopic examination alone.

scholarly journals Clinical study of carcinomas of external ear canal and middle ear.

1989 ◽  
Vol 82 (4) ◽  
pp. 555-562
Author(s):  
Masaki Satoh ◽  
Katsuhiko Tanaka ◽  
Tadashi Yoshimura ◽  
Noboru Sakai ◽  
Hideyuki Ohnuma ◽  
...  
Keyword(s):  
Clinical Study ◽  
Middle Ear ◽  
External Ear ◽  
Ear Canal ◽  
External Ear Canal

Evaluation of the Carhart Effect in Congenital Middle Ear Malformation with Both an Intact External Ear Canal and a Mobile Stapes Footplate

ORL ◽  
2011 ◽  
Vol 73 (2) ◽  
pp. 61-67 ◽  
Author(s):  
Takashi Sakamoto ◽  
Akinobu Kakigi ◽  
Akinori Kashio ◽  
Kaori Kanaya ◽  
Mitsuya Suzuki ◽  
...  
Keyword(s):  
Middle Ear ◽  
External Ear ◽  
Ear Canal ◽  
External Ear Canal ◽  
Stapes Footplate

scholarly journals Rapid Preparation of Burow's Solution for the Treatment of Intractable Chronic Suppurative Disease of the External Ear Canal and Middle Ear

2007 ◽  
Vol 100 (11) ◽  
pp. 929-933 ◽  
Author(s):  
Tomohisa Hirai ◽  
Noriyuki Fukushima ◽  
Kunihiko Ono ◽  
Keishin Go ◽  
Masaaki Hajima ◽  
...  
Keyword(s):  
Middle Ear ◽  
External Ear ◽  
Ear Canal ◽  
Rapid Preparation ◽  
External Ear Canal
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