Chee Keong Chong

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BACKGROUND Breast cancer in young patients is often associated with a poorer prognosis, but there has been a paucity of published data in an Asian population. METHODS One hundred and six patients (12.6%) under the age of 40 years with breast cancer (group V) were compared with 737 patients with breast cancer aged 40 years or more (group W). Demographics,(More)
BACKGROUND Endogenous endophthalmitis is an inflammation of ocular tissues that can lead to deterioration of and loss of vision. Rarely, this can complicate the course of a patient with pyogenic liver abscess. METHODS Over an 18-month period, 68 patients were treated for pyogenic liver abscesses. Three patients, all of whom were male and with diabetes,(More)
Dengue is a mosquito-transmitted virus infection that causes epidemics of febrile illness and hemorrhagic fever across the tropics and subtropics worldwide. Annual epidemics are commonly observed, but there is substantial spatiotemporal heterogeneity in intensity. A better understanding of this heterogeneity in dengue transmission could lead to improved(More)
Twenty-two displaced talar neck fractures were treated by open reduction and internal fixation. Four open fractures were operated within 8 hours and 18 closed injuries were treated at an average interval of 13.8 hours after injury. Fractures were classified according to Hawkins' classification into 14 type II, 7 type III and 1 type IV. At an average follow(More)
Infection with dengue virus is a major public health problem in the Asia-Pacific region and throughout tropical and sub-tropical regions of the world. Vaccination represents a major opportunity to control dengue and several candidate vaccines are in development. Experts in dengue and in vaccine introduction gathered for a two day meeting during which they(More)
INTRODUCTION This retrospective study aims to assess the epidemiology of road traffic accident (RTA) fatalities in Singapore, other causes of death besides trauma in a RTA, and identify the groups at risk. MATERIALS AND METHODS Data of 1038 RTA fatalities were reported between 2000 and 2004. Analyses using the Fisher's exact test for discrete variables(More)
CONTEXT Phyllodes tumors are rare fibro-epithelial lesions which make up less than 1% of all breast neoplasms. After curative surgery, distant metastases may occur without local recurrence; the typical sites of the metastases being the lungs and the bones. Endoscopic ultrasound (EUS) and EUS-guided fine needle aspiration (EUS-FNA) has emerged as the leading(More)
We report a rare case of gastrointestinal tumor of the anus with an unusual presentation as a perianal lipoma. A 65-year-old man presented with a 2-month history of a painless perianal lump clinically resembling a perianal lipoma. Endoanal ultrasonography revealed a 3x3 cm2 mass in the intersphincteric plane. Following initial excision of the lesion,(More)
BACKGROUND The injury resulting from postmortem ischemia is a critical deterrent to the availability of donor valves. Using the reduction of XTT-tetrazolium salt as a marker of metabolic sequelae, we assessed the injurious effect of ischemia and the metabolic sequelae in 156 porcine semilunar leaflets. METHODS The leaflets were randomly allocated to(More)
This study sought to evaluate the use of tetrazolium salt XTT reduction as an indicator of valvular viability in a cryoprocessed porcine cardiac homograft model. The XTT tetrazolium assays was based on the metabolic reduction of Sodium 3'-[1-(phenylamino-carbonyl)-3,4-Tetrazolium]-bis(4-methoxy-6-nitro) benzene sulfonic acid hydrate. The relationship(More)