Vol. 14 No. 2, 2011

Table of Contents


Conservative Treatment of Acute Cholecystitis with Percutaneous Cholecystostomy and Antibiotics: Retrospective Review of Outcomes

KC Chan, PSF Lee, CC Chan

Hong Kong J Radiol 2011;14:68-72

Objective: To review the outcome of patients treated by percutaneous cholecystostomy and antibiotics alone for acute cholecystitis without resorting to elective cholecystectomy.

Methods: Data on patients who underwent percutaneous

Association of Osteosarcoma Necrotic Volumes with Tumour Size and Lung Metastasis: Revealed by Magnetic Resonance Imaging

M Nor Azam, NM Nik Munirah, W Zulmi

Hong Kong J Radiol 2011;14:73-7

Objective: Osteosarcoma is the most frequent skeletal malignancies in children and adolescents. Studies indicate that hypoxia of such solid tumours has a major prognostic impact; severe and long-lasting hypoxia results in tumour necrosis. Therefore presence of

Questionable Adequacy of Magnetic Resonance for the Detection of Ossification of the Posterior Longitudinal Ligament of the Cervical Spine

JJ Wong, OC Leung, MK Yuen

Hong Kong J Radiol 2011;14:78-83

Objective: To investigate the sensitivity of magnetic resonance for detecting cervical ossification of the posterior longitudinal ligament.

Methods: A retrospective review of 427 patients in whom cervical ossification of the posterior longitudinal ligament


Dural Tear and Pseudomeningocele Due to Lumbar Burst Fractures: Detection by Multidetector Computed Tomography and Magnetic Resonance Imaging

JC Kandathil, M George

Hong Kong J Radiol 2011;14:84-8

Dural tear and pseudomeningocele are reported to occur with thoracic and lumbar burst fractures. Conventional myelography, computed tomography with intrathecal metrizamide, dynamic computed tomographic myelography, magnetic resonance imaging and

Acute Calcific Prevertebral Tendonitis: an Uncommon Cause of Acute Neck Pain Presenting with a Retropharyngeal Effusion

FNY Sin, AB Lo, KL Siu, WP Chu

Hong Kong J Radiol 2011;14:89-92

Acute calcific prevertebral tendonitis is a self-limiting inflammatory process due to deposition of calcium hydroxyapatite in the tendon fibres of the longus colli muscles. Its initial clinical and radiological presentation significantly overlaps with that of a retropharyngeal

Anterior Interosseous Nerve Syndrome: Characteristic Magnetic Resonance Findings and Applications

CY Chu, JCK Lee, JLY Leung, CS Cheng

Hong Kong J Radiol 2011;14:93-6

Anterior interosseous nerve syndrome, also known as Kiloh-Nevin syndrome, is characterised by weakness of the muscles supplied by the anterior interosseous nerve, a branch of the median nerve that innervates the flexor pollicis longus, the flexor digitorum

Disseminated Atypical Teratoid/Rhabdoid Tumour in a Boy: Uncommon Presentation of a Rare and Highly Aggressive Tumour of the Central Nervous System

WP Chu, KL Siu

Hong Kong J Radiol 2011;14:97-101

Atypical teratoid/rhabdoid tumour is a rare, highly aggressive tumour of the central nervous system, usually encountered in paediatric patients, and at presentation it is seldom disseminated. This report describes such a case in a 21-month-old boy.

Congenital Posterior Arch Defect of the Atlas: Report of a Rare Anomaly

CY Chu, RTM Chan, VKP Fung, CS Cheng

Hong Kong J Radiol 2011;14:102-7

Congenital defects of the posterior arch of the atlas are rare, with a reported prevalence of 0.95 to 4%. The defects have been classified into five types (A-E), with type A being most common and types B-E being found only in 0.69% of the general population.

Primary Cutaneous Gamma-delta T-cell Lymphoma: Predominant Subcutaneous Uptake Detected by 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomographic Scan in a Rapidly Deteriorating Patient

B Lo, CM Lok, KM Kwok, WP Chu, WS Mak, NY Sin

Hong Kong J Radiol 2011;14:108-12

Primary cutaneous gamma-delta T-cell lymphoma is a rare subtype of primary cutaneous peripheral T-cell lymphoma. In the latest World Health Organization / European Organisation for Research and Treatment of Cancer classification and World Health

Redundant Nerve Roots of the Cauda Equina Associated with Lumbar Spinal Arachnoid Cyst

SWV Chan, R Lee, MT Chau

Hong Kong J Radiol 2011;14:113-7

A patient with redundant nerve roots of the cauda equina associated with the presence of an intra-spinal arachnoid cyst is described. She presented with sensory, motor and sphincter dysfunction. Magnetic resonance imaging revealed redundant nerve roots manifesting


Congenital Inner Ear Malformations

KS Tse, KM Chu, LF Chiu, TW Fan, TK Tsang, TL Kwan

Hong Kong J Radiol 2011;14:118-25

Hearing impairment is defined as a person’s hearing threshold being above the normal range of -10 to 15 decibels. It has significant impact on a child’s language, cognitive, socioemotional and behavioural development. Therefore early recognition of hearing