1.Epilepsy surgery program in Hong Kong
Patrick Kwan ; Danny TM Chan ; Colin Lui ; WK Chak
Neurology Asia 2007;12(Supplement 2):5-8
We reported the experience of epilepsy su�rgery program in 3 centers in Hong Kon��� g They are Prince of
Wales Hospital, Queen Elizabeth Hospital and Tuen Mun Hospital. The results of surgery are comparable
to best centre elsewhere in the world. Hong Kong has a population of 7 million people with estimated
surgical candidates of 3,500����. With e�stimated le�ss than 150 epilep�sy ��sur�geries performed in Hong Kong
so far, there is room for further development of epilepsy surgery service in Hong Kong
2.Safe Excision of a Large Overhanging Cystic Bleb Following Autologous Blood Injection and Compression Suture.
Danny Siu Chun NG ; Ruby Hok Ying CHING ; Jason Cheuk Sing YAM ; Clement Wai Nang CHAN
Korean Journal of Ophthalmology 2013;27(2):145-148
Here, we report a large, overhanging cystic bleb that compromised vision and induced a foreign body sensation in a patient who underwent a trabeculectomy surgery with anti-metabolite therapy 4 years prior. Ultrasound biomicroscopy revealed multiple loculations with thin septa inside the bleb and a high risk of damage to the bleb was anticipated with a straight forward surgical excision. We injected autologous blood and placed a compression suture 6 weeks prior to surgical excision of the overhanging portion of the bleb. The operation was successful in preserving excellent bleb function, restoring visual acuity, and alleviating symptoms in our patient with up to 9 months of follow-up.
Blister/pathology/*surgery
;
Blood Transfusion, Autologous/*methods
;
Conjunctiva/pathology/surgery
;
Glaucoma/*surgery
;
Humans
;
Male
;
Middle Aged
;
Postoperative Complications/*surgery
;
*Suture Techniques
;
Trabeculectomy/*adverse effects
3.Safe Excision of a Large Overhanging Cystic Bleb Following Autologous Blood Injection and Compression Suture.
Danny Siu Chun NG ; Ruby Hok Ying CHING ; Jason Cheuk Sing YAM ; Clement Wai Nang CHAN
Korean Journal of Ophthalmology 2013;27(2):145-148
Here, we report a large, overhanging cystic bleb that compromised vision and induced a foreign body sensation in a patient who underwent a trabeculectomy surgery with anti-metabolite therapy 4 years prior. Ultrasound biomicroscopy revealed multiple loculations with thin septa inside the bleb and a high risk of damage to the bleb was anticipated with a straight forward surgical excision. We injected autologous blood and placed a compression suture 6 weeks prior to surgical excision of the overhanging portion of the bleb. The operation was successful in preserving excellent bleb function, restoring visual acuity, and alleviating symptoms in our patient with up to 9 months of follow-up.
Blister/pathology/*surgery
;
Blood Transfusion, Autologous/*methods
;
Conjunctiva/pathology/surgery
;
Glaucoma/*surgery
;
Humans
;
Male
;
Middle Aged
;
Postoperative Complications/*surgery
;
*Suture Techniques
;
Trabeculectomy/*adverse effects
4.Prevalence, Patterns, and Genetic Association Analysis of Modic Vertebral Endplate Changes.
Rishi Mugesh KANNA ; Rajasekaran SHANMUGANATHAN ; Veera Ranjani RAJAGOPALAN ; Senthil NATESAN ; Raveendran MUTHURAJA ; Kenneth Man Chee CHEUNG ; Danny CHAN ; Patrick Yu Ping KAO ; Anita YEE ; Ajoy Prasad SHETTY
Asian Spine Journal 2017;11(4):594-600
STUDY DESIGN: A prospective genetic association study. PURPOSE: The etiology of Modic changes (MCs) is unclear. Recently, the role of genetic factors in the etiology of MCs has been evaluated. However, studies with a larger patient subset are lacking, and candidate genes involved in other disc degeneration phenotypes have not been evaluated. We studied the prevalence of MCs and genetic association of 41 candidate genes in a large Indian cohort. OVERVIEW OF LITERATURE: MCs are vertebral endplate signal changes predominantly observed in the lumbar spine. A significant association between MCs and lumbar disc degeneration and nonspecific low back pain has been described, with the etiopathogenesis implicating various mechanical, infective, and biochemical factors. METHODS: We studied 809 patients using 1.5-T magnetic resonance imaging to determine the prevalence, patterns, distribution, and type of lumbar MCs. Genetic association analysis of 71 single nucleotide polymorphisms (SNPs) of 41 candidate genes was performed based on the presence or absence of MCs. SNPs were genotyped using the Sequenome platform, and an association test was performed using PLINK software. RESULTS: The mean age of the study population (n=809) was 36.7±10.8 years. Based on the presence of MCs, the cohort was divided into 702 controls and 107 cases (prevalence, 13%). MCs were more commonly present in the lower (149/251, 59.4%) than in the upper (102/251, 40.6%) endplates. L4–5 endplates were the most commonly affected levels (30.7%). Type 2 MCs were the most commonly observed pattern (n=206, 82%). The rs2228570 SNP of VDR (p=0.02) and rs17099008 SNP of MMP20 (p=0.03) were significantly associated with MCs. CONCLUSIONS: Genetic polymorphisms of SNPs of VDR and MMP20 were significantly associated with MCs. Understanding the etiopathogenetic mechanisms of MCs is important for planning preventive and therapeutic strategies.
Cohort Studies
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Genetic Association Studies
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Humans
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Intervertebral Disc Degeneration
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Low Back Pain
;
Magnetic Resonance Imaging
;
Phenotype
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Polymorphism, Genetic
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Polymorphism, Single Nucleotide
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Prevalence*
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Prospective Studies
;
Spine