1.Middle Ear Actinomycosis Involving Facial Nerve and Lateral Semicircular Canal.
Sungsu LEE ; Hyong Joo PARK ; Hyong Ho CHO
Korean Journal of Otolaryngology - Head and Neck Surgery 2015;58(1):57-60
Actinomycosis is a chronic granulomatous disease caused by the species of Actinomyces. Although it has become a rare disease in the present antibiotics era, it still needs long term antibiotic treatment and often mis- or delayed- diagnosed due to no typical sign and symptoms. Most often, it occurs in the cervicofacial region. Middle ear is not a common site for Actinomycosis, and the inner ear involvement is extremely rare. Here, we report a case of middle ear Actinomycosis involving facial nerve and lateral semicircular canal.
Actinomyces
;
Actinomycosis*
;
Anti-Bacterial Agents
;
Ear, Inner
;
Ear, Middle*
;
Facial Nerve*
;
Granulomatous Disease, Chronic
;
Rare Diseases
;
Semicircular Canals*
;
Temporal Bone
2.Vertebral compression fractures: distinction between benign and malignant causes with Tc-99m labeled antigranulocyte antibody immunoscintigraphy.
Ihn Ho CHO ; Hyong Woo LEE ; Sang Ho AN ; Kyu Chang WON ; Jang Ho BAE ; Soo Ho CHO
Yeungnam University Journal of Medicine 1998;15(2):254-262
We evaluated the effectiveness of Tc-99m labeled antigranulocyte antibody immunoscintigraphy in differentiating the causes of vertebral compression fracture. This study involved 16 patients with vertebral compression fracture; 8 were due to trauma or osteoporosis, 3 were due to metastasis and 5 were due to tuberculous spondylitis. We retrospectively analyzed the location and the extent of decreased tracer uptake in tomographic images of Tc-99m labeled antigranulocyte antibody immunoscintigraphy. Eight patients had a 16 vertebral compression fractures due to trauma or osteoporosis , three patients had a 3 vertebral compression fractures due to metastasis and 5 patients had a 6 vertebral compression fractures due to tuberculous spondylitis. Sixteen vertebral compression fractures by trauma or osteoporosis showed a normal tracer uptake in pedicle, laminar and spinous process, but there was noted with 6 decreased uptake, 8 absence of tracer uptake and 2 normal tracer uptake in the vertebral body. Two vertebral compression fractures by metastasis showed the absence of uptake in vertebral body, pedicle, laminar and spinous process, and one showed an absence of vertebral body and spinous process. Six vertebral compression fractures by tuberculous spondylitis showed the absence of uptake in six compression fractures, the absence of pedicle in five compression fractures. We concluded Tc-99m labeled antigranulocyte antibody immunoscintigraphy may be helpful to differentiate the causes of vertebral compression fractures.
Fractures, Compression*
;
Humans
;
Neoplasm Metastasis
;
Osteoporosis
;
Retrospective Studies
;
Spondylitis
3.Intratympanic Drug Injection for Inner Ear Disease.
Hyung Chae YANG ; Hyong Ho CHO
Korean Journal of Otolaryngology - Head and Neck Surgery 2014;57(6):364-372
During treatment of inner ear diseases, the blood-cochlear barrier limits the drug delivery into the cochlea. Intratympanic drug injection for inner ear diseases is a safe procedure where drugs reach high concentrations in the cochlea and systemic side effects are minimized. This paper reviews the updated status of intratympanic drug injections for the treatment of inner ear disease. Intratympanic drug injection is an effective procedure for the control of inner ear disorders such as Meniere's disease and sudden sensorineural hearing loss. Although the effect of intratympanic injection on tinnitus and noise-induced hearing loss is open to discussion, its indications could be extended, like as drug, gene, and cell-based therapy.
Aminoglycosides
;
Cochlea
;
Ear, Inner
;
Hearing Loss, Noise-Induced
;
Hearing Loss, Sensorineural
;
Hearing Loss, Sudden
;
Labyrinth Diseases*
;
Meniere Disease
;
Tinnitus
4.Fate of Sudden Deafness Occurring in the Only Hearing Ear: Outcomes and Timing to Consider Cochlear Implantation.
Seung Su LEE ; Hyong Ho CHO ; Chul Ho JANG ; Yong Bum CHO
Journal of Korean Medical Science 2010;25(2):283-286
The present study was undertaken to learn the outcome of patients with idiopathic sudden sensorineural hearing loss (ISSNHL) in their only hearing ear. Timing to conduct a cochlear implantation was also determined in those who did not recover the hearing. The study group comprised 25 patients who confronted ISSNHL in their only hearing ear. A total of 192 patients, who had ISSNHL in one ear and had normal contralateral ear, served as the control. Demographically there were no significant differences between the groups. The recovery rate was similar between the groups: 64.0% in the experimental and 62.5% in the control group. The duration until the recovery of ISSNHL in the only hearing ear was 5-90 days (average 17.6 days). In the experimental group, 8 patients did not recover from ISSNHL, and underwent cochlear implantation in 6 with satisfactory results. These results suggest that the same treatment is applicable for patients with ISSNHL regardless of whether their contralateral ear is deaf or normal. For those who do not recover from ISSNHL in their only hearing ear, culminating in bilateral deafness, we may consider further definitive treatment including cochlear implantation as early as 3 months after initiating the treatment of ISSNHL.
Adolescent
;
Adult
;
Aged
;
Aged, 80 and over
;
Child
;
*Cochlear Implantation
;
Demography
;
Female
;
Hearing Loss, Sudden/surgery/*therapy
;
Hearing Loss, Unilateral/*diagnosis
;
Humans
;
Male
;
Middle Aged
;
Patient Selection
;
Retrospective Studies
;
Severity of Illness Index
;
Treatment Outcome
5.A Case of Cochlear Implantation in Bromate-Induced Bilateral Sudden Deafness.
Tae Ho EOM ; Sungsu LEE ; Hyong Ho CHO ; Yong Beom CHO
Journal of Audiology & Otology 2015;19(1):51-53
Despite the well-established nature of bromate-induced ototoxicity, cochlear implantation after bromate intoxication has been rarely documented. We hereby present a case of a 51-year-old female deafened completely after bromate ingestion. Her hearing was not restored by systemic steroid treatment and hearing aids were of no use. A cochlear implantation was performed on her right ear 3 months after the bromate ingestion. In bromate intoxication cases, early monitoring of hearing level is necessary and other drugs with potential ototoxicity should be avoided. The outcome of cochlear implantation was excellent in this case of bromate-induced deafness.
Cochlear Implantation*
;
Cochlear Implants*
;
Deafness
;
Ear
;
Eating
;
Female
;
Hearing
;
Hearing Aids
;
Hearing Loss, Sudden*
;
Humans
;
Middle Aged
6.Mastoid Obliteration with Silicone Blocks after Canal Wall Down Mastoidectomy.
Sung Woo CHO ; Yong Bum CHO ; Hyong Ho CHO
Clinical and Experimental Otorhinolaryngology 2012;5(1):23-27
OBJECTIVES: To evaluate the usefulness of silicone blocks as graft material for mastoid cavity obliteration in the prevention of problematic mastoid cavities after canal wall down mastoidectomies. METHODS: Retrospective evaluation of 20 patients who underwent mastoid obliteration with silicone blocks between 2002 and 2009 at the Chonnam National University Hospital. The cases consisted of 17 patients with chronic otitis media with cholesteatoma and 3 patients with adhesive otitis media. The postoperative follow-up period was an average 49 months (range, 6 to 90 months). The surgical technique used at our institution composed four major steps: First, the canal wall down mastoidectomy was performed and the middle ear procedure was completed. The silicone blocks were used to fill up the mastoidectomized cavity. Then, a cortical bone pate was used to cover the surface of the silicone blocks. Finally, temporalis fascia and a split musculoperiosteal flap were used to surround the bone pate for reinforcement of the reconstructed canal wall. We examined postoperative success rate and hearing outcomes. RESULTS: In 19 cases (95%), the reconstructed canal wall maintained a cylindrical shape and the ear drum healed without perforation. In only 1 case (5%), the reconstructed canal wall was destroyed with ear drum perforation. The mean improvement in air-bone gap was about 12 dB (P<0.05), and the mean improvement in air-conduction was about 16 dB (P<0.05). CONCLUSION: We suggest that silicone blocks could be valuable resources as graft materials for mastoid obliteration after canal wall down mastoidectomies.
Adhesives
;
Cholesteatoma
;
Ear
;
Ear, Middle
;
Fascia
;
Follow-Up Studies
;
Hearing
;
Humans
;
Mastoid
;
Otitis Media
;
Reconstructive Surgical Procedures
;
Reinforcement (Psychology)
;
Retrospective Studies
;
Silicones
;
Transplants
7.A Case of Relapsing Polychondritis Associated with Sjogren's Syndrome.
Kwan Hyong LEE ; Yeon Sik HONG ; Hyong Ju KANG ; Se Hee KIM ; Myoung Cheol KIM ; Chul Soo CHO ; Ho Youn KIM ; Ki Jun KIM
The Journal of the Korean Rheumatism Association 2001;8(3):198-202
Relapsing polychondritis is a rare multisystem rheumatic disease,characterized by recurrent and potentially destructive inflammatory lesions of cartilaginous structures.All types of cartilage & other proteoglycan-rich structures may be involved,resulting in auricular chondritis,laryngotracheal chondritis,ocular symptoms,vasculitis,cardiac abnormalities,skin lesions and glomerulonephritis. The disease may be associated with another connective tissue and autoimmune diseases such as rheumatoid arthritis,systemic lupus erythematosus,Sjogren's syndrome and systemic vasculitis. We experienced a 69-year-old female patient who had been previously diagnosed as Sjogren's syndrome,presenting respiratory tract involvement,episcleritis,auricular chondritis and vestibular dysfunction.
Aged
;
Autoimmune Diseases
;
Cartilage
;
Connective Tissue
;
Female
;
Glomerulonephritis
;
Humans
;
Polychondritis, Relapsing*
;
Respiratory System
;
Sjogren's Syndrome*
;
Systemic Vasculitis
8.A Case of Cochlear Implantation Targeting Preserved Cerebral Cortex in Severe Traumatic Brain Injury.
Eun Sun JEON ; Sungsu LEE ; Hyong Ho CHO ; Yong Beom CHO
Korean Journal of Audiology 2014;18(3):148-150
Temporal bone fracture and blunt head trauma was once considered as contraindication for the surgery. Increasing numbers of successful cochlear implantation are being reported. However, the outcome of cochlear implantation in severe damaged brain is unclear. A multichannel cochlear implant was successfully implanted in a 33-year-old man who had both sensorineural deafness, left hemiplegia due to bilateral transverse temporal bone fractures and severe right brain damage after a traffic accident.
Accidents, Traffic
;
Adult
;
Brain
;
Brain Injuries*
;
Cerebral Cortex*
;
Cochlear Implantation*
;
Cochlear Implants*
;
Craniocerebral Trauma
;
Deafness
;
Hemiplegia
;
Humans
;
Skull Fractures
;
Temporal Bone
9.Transplantation of Neural Differentiated Human Mesenchymal Stem Cells into the Cochlea of an Auditory-neuropathy Guinea Pig Model.
Yong Bum CHO ; Hyong Ho CHO ; Sujeong JANG ; Han Seong JEONG ; Jong Seong PARK
Journal of Korean Medical Science 2011;26(4):492-498
The aim of this study was to determine the effects of transplanted neural differentiated human mesenchymal stem cells (hMSCs) in a guinea pig model of auditory neuropathy. In this study, hMSCs were pretreated with a neural-induction protocol and transplanted into the scala tympani of the guinea pig cochlea 7 days after ouabain injury. A control model was made by injection of Hanks balanced salt solution alone into the scala tympani of the guinea pig cochlea 7 days after ouabain injury. We established the auditory neuropathy guinea pig model using 1 mM ouabain application to the round window niche. After application of ouabain to the round window niche, degeneration of most spiral ganglion neurons (SGNs) without the loss of hair cells within the organ of Corti and increasing the auditory brain responses (ABR) threshold were found. After transplantation of neural differentiated hMSCs, the number of SGNs was increased, and some of the SGNs expressed immunoreactivity with human nuclear antibody under confocal laser scanning microscopy. ABR results showed mild hearing recovery after transplantation. Based on an auditory neuropathy animal model, these findings suggest that it may be possible to replace degenerated SGNs by grafting stem cells into the scala tympani.
Animals
;
Cardiotonic Agents/toxicity
;
Cochlea/drug effects/pathology
;
Disease Models, Animal
;
Female
;
Guinea Pigs
;
Hearing Loss, Central/chemically induced/pathology/*therapy
;
Humans
;
*Mesenchymal Stem Cell Transplantation
;
Mesenchymal Stem Cells/*cytology
;
Neurogenesis
;
Ouabain/toxicity
;
Spiral Ganglion/pathology
;
Transplantation, Heterologous
10.Pneumocephalus Secondary to Mastoid Surgery: A Case Report.
Dong Hoon LEE ; Hyong Ho CHO ; Yong Bum CHO
Korean Journal of Otolaryngology - Head and Neck Surgery 2006;49(3):331-333
Pneumocephalus secondary to mastoid surgery is uncommon. Serious sequelae and central nervous system infection may result from inadequate management. It is diagnosed by careful history, physical examination and imaging studies and surgery is the main treatment mode. The aim of surgery is to detect communication between mastoid cavity and brain, and to correct it. We experienced a case of pnumacephalus secondary to mastoid surgery, which we treated with surgery.
Brain
;
Central Nervous System Infections
;
Ear, Middle
;
Mastoid*
;
Physical Examination
;
Pneumocephalus*