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Tiong Yong Tan - One of the best experts on this subject based on the ideXlab platform.

  • High Resolution Computed Tomography (HRCT) Imaging Findings of Oval Window Atresia with Surgical Correlation.
    Annals of the Academy of Medicine Singapore, 2020
    Co-Authors: Hau Wei Khoo, Chih Ching Choong, Seng Beng Yeo, Julian Pn Goh, Tiong Yong Tan
    Abstract:

    Introduction Isolated oval window atresia (OWA) is a rare cause of congenital conductive Middle Ear Deafness and may be overlooked owing to the normal appEarance of the external Ear. This anomaly has been previously described, although the published numbers with both imaging and surgical findings are few. Our aim is to correlate the imaging features of OWA with intraoperative findings. Materials and methods This is a single-centre retrospective evaluation of patients who were diagnosed with OWA and who received surgery from January 1999 to July 2006. No new case was diagnosed after 2006 to the time of preparation of this manuscript. High resolution computed tomography (HRCT) imaging of the temporal bones of the patients were retrospectively evaluated by 2 head and neck radiologists. Images were evaluated for the absence of the oval window, ossicular chain abnormalities, position of the facial nerve canal, and other malformations. Imaging findings were then correlated with surgical findings. Results A total of 9 Ears in 7 patients (two of whom with bilateral lesions) had surgery for OWA. All patients had concomitant findings of absent stapes footplate with normal, deformed or absent stapes superstructure and an inferiorly displaced facial nerve canal. HRCT was sensitive in identifying OWA and associated ossicular chain and facial nerve abnormalities, which were documented surgically. Conclusion OWA is a rare entity that can be diagnosed with certainty on HRCT, best visualised on coronal plane. Imaging findings of associated Middle Ear abnormalities, position of the facial nerve canal, which is invariably mal-positioned, and associated deformity of the incus are important for presurgical planning and consent.

  • Imaging of congenital Middle Ear Deafness.
    Annals of the Academy of Medicine Singapore, 2003
    Co-Authors: Tiong Yong Tan, J. P. N. Goh
    Abstract:

    Introduction: Conductive hEaring loss, in the presence of a normal external Ear, is usually due to an interference with the normal transmission ofsound from the tympanic membrane across the ossicular chain to the oval window. If conductive hEaring loss occurs in a young child, congenital Middle Ear pathology is the most likely cause. Materials and Methods: High resolution computed tomography of the Middle Ear is the diagnostic modality of choice. Details of the imaging technique are outlined in this article. Eight cases of congenital Middle Ear Deafness imaged in the radiological departments of Changi General Hospital and Tan Tock Seng Hospital in Singapore are illustrated. Results: Congenital Middle Ear Deafness may be classified Into ossicular chain abnormalities, congenital ossicular fixation, congenital oval window atresia and congenital round window atresia. The imaging features for each category are described. Conclusion: With proper imaging technique and a systemic analysis of the images, the abnormalities that result In congenital Middle Ear Deafness can usually be demonstrated on most occasions.

J. P. N. Goh - One of the best experts on this subject based on the ideXlab platform.

  • Imaging of congenital Middle Ear Deafness.
    Annals of the Academy of Medicine Singapore, 2003
    Co-Authors: Tiong Yong Tan, J. P. N. Goh
    Abstract:

    Introduction: Conductive hEaring loss, in the presence of a normal external Ear, is usually due to an interference with the normal transmission ofsound from the tympanic membrane across the ossicular chain to the oval window. If conductive hEaring loss occurs in a young child, congenital Middle Ear pathology is the most likely cause. Materials and Methods: High resolution computed tomography of the Middle Ear is the diagnostic modality of choice. Details of the imaging technique are outlined in this article. Eight cases of congenital Middle Ear Deafness imaged in the radiological departments of Changi General Hospital and Tan Tock Seng Hospital in Singapore are illustrated. Results: Congenital Middle Ear Deafness may be classified Into ossicular chain abnormalities, congenital ossicular fixation, congenital oval window atresia and congenital round window atresia. The imaging features for each category are described. Conclusion: With proper imaging technique and a systemic analysis of the images, the abnormalities that result In congenital Middle Ear Deafness can usually be demonstrated on most occasions.

Roehrs M - One of the best experts on this subject based on the ideXlab platform.

  • Middle-Ear findings in young cleft lip and palate children. Comparison of two treatment clinics
    Deutsche Zeitschrift fur Mund- Kiefer- und Gesichts-Chirurgie, 1991
    Co-Authors: Hörmann K, Roehrs M
    Abstract:

    Middle-Ear findings in two groups with cleft lips and palate of the Early childhood have been compared with each other. In 126 CLAP children of the Departments for Maxillofacial Surgery/ENT of the University of Hamburg tympanic cavity wash tubes (grommets) were inserted (26%) or myringotomy was done (10%) after persistence of Middle Ear effusions for more than 3 months. In contrast to this rather conservative approach, grommets were inserted as a primary treatment in 58 CLAP children of the Iowa Cleft Palate Center. Long-term follow-up revealed no marked Middle-Ear pathology in either of these groups. Repeated use of general anesthesia and the risk of othorrhoea (10-18%), however, speak against the routine practice of grommet insertion. From the otological point of view a wait-and-see strategy should be employed in the indication for grommet insertion in CLAP children after closure of the soft palate, just as it is done in the normal population (controlled intervention). Therapeutic grommet insertion performed in time will restore the normal physiology of the Middle Ear due to mucociliary clEarance. Moreover, there is an immediate effect on the child's hEaring ability thus contributing to physiological speech development. On the other hand, adequate treatment prevents defect healing sequelae such as Middle-Ear Deafness, adhesions and cholesteatomas.

J. Obach Tuca - One of the best experts on this subject based on the ideXlab platform.

  • Auditory hallucinosis in brainstem lesions and musical hallucination in Deafness. Analogies and differences
    European journal of neurology, 1996
    Co-Authors: V. Obach Baurier, J. Obach Tuca
    Abstract:

    Auditory hallucinations are found at the cross-roads of otological, neurological and psychiatric practice. They are generally considered to be the manifestation of psychosis, delirium tremens and chronic alcoholism, toxic states, hemispheric (predominantly temporal lobe) involvement, brainstem disorders or acquired peripheral (acoustic nerve, cochlea or Middle-Ear) Deafness. Auditory hallucinosis in one case of brainstem lesion and musical hallucinations in two cases associated with acquired peripheral Deafness are presented. Analogies and differences, pathophysiology and review of the literature are discussed.

Nicholas Steventon - One of the best experts on this subject based on the ideXlab platform.

  • Oxford Handbook of Clinical Specialties - Ear, nose, and throat
    Oxford Handbook of Clinical Specialties, 2020
    Co-Authors: Nicholas Steventon
    Abstract:

    This chapter in the Oxford Handbook of Clinical Specialties explores the Ear, nose, and throat (ENT) specialty. It outlines examination in the ENT in general and investigates each area in depth. The Ear is explored including hEaring tests, painful Ears (otalgia), discharging Ears, otitis media, and fluid in the Middle Ear. Deafness in childhood and adults is discussed, as well as tinnitus, acoustic neuroma, noise-induced hEaring loss, and vertigo. The nose is explored, including the paranasal sinuses, nasal injury, foreign bodies, and nosebleed. The throat is investigated, including sore throat, stridor, hoarseness (dysphonia), dysphagia, cancer, palsy, neck lumps, and salivary glands. Dentistry for doctors is also explored.