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Precise assessment of the extent of nasopharyngeal carcinoma (NPC) represents the basic step towards optimal treatment. We compared the capacity of CT and MRI in assessing the extent of NPC in 67 patients. MRI was superior to CT in demonstrating lesions in the retropharyngeal node, skull base, intracranial area, carotid space, longus colli muscle and(More)
In this study, we retrospectively reviewed the MRI features of recurrent nasopharyngeal carcinoma (NPC) in 72 patients who underwent MRI before and after gadolinium injection. Recurrent NPC exhibited a high degree of regional spread and a variety of signal intensities and contours. MRI showed a nasopharyngeal mass in 50 patients (69.4 %); other sites of(More)
OBJECTIVES To study the acute clinical presentations of ketamine abusers in Hong Kong. DESIGN Retrospective chart review. SETTING Fifteen accident and emergency departments in Hong Kong. PATIENTS Consultations associated with recent ketamine use either confirmed by history or urine test were searched for from the database of the Hospital Authority(More)
We report an unusual case of Müllerian duct cyst in an 8-month-old infant who presented with frequent vomiting and recurrent urinary tract infections. Computed tomography showed a midline giant cyst in the pelvic floor. Delayed enhanced computed tomography demonstrated contrast filling of the cyst, indicating a communication with the urotract. Subsequent(More)
We present a surgically proven case of infradiaphragmatic pulmonary sequestration combined with cystic adenomatoid malformation. Prenatal magnetic resonance imaging revealed a well-defined hyperintense mass with a hypointense septum in the left infradiaphragmatic region. Postdelivery computed tomography (CT) and 3-month follow-up CT showed replacement of(More)
A 35-year-old woman presented with a 6-month history of intermittent headaches, vomiting and dizziness. CT showed a plaquelike mass with tiny calcifications along the surface of the left frontal lobe. The mass exhibited heterogeneous enhancement with a few lowdensity foci. Underlying sulcal obliteration and enhancement and white matter oedema were also(More)
A double-blind, cross-over study was undertaken to compare inhalation of betamethasone valerate (BV, 800 microgram daily) with sodium cromoglycate (SCG, 80 mg daily) in twenty children requiring bronchodilators for perennial asthma. Each treatment period lasted 4 weeks but statistical comparisons were made only in respect of the last 14 days of each(More)
To the Editor—We read with interest Wong et al’s paper on dilated common bile ducts (CBDs) mimicking choledochal cysts in ketamine abusers.1 On reviewing our database of ketamine abusers from July 2005 to June 2008, we found two similar patients who had episodes of recurrent epigastric pain and were subsequently found to have CBD. The first patient was a(More)