Journal

Infantile Intravesical Malignant Rhabdoid Tumour

Full Article

HKY Tam, A Li, PSF Lee, VPW Tse, KKY Pang

Hong Kong J Radiol 2013;16:e21-5

DOI: 10.12809/hkjr1312130

Malignant rhabdoid tumour is a rare, but highly aggressive, malignancy of early childhood. Malignant rhabdoid tumour can be classified according to renal and extrarenal locations. For extrarenal lesions, the spinal cord and central nervous system are most commonly involved, although such tumours may arise in

Intralabyrinthine Schwannoma: an Uncommon but Underdiagnosed Entity

Full Article

YH Woo, SS Lo

Hong Kong J Radiol 2013;16:e17-20

DOI: 10.12809/hkjr1312124

Intralabyrinthine schwannoma is an uncommon tumour arising from the vestibulocochlear nerve within the cochlear, vestibule, or semicircular canals. Intralabyrinthine schwannomas are classified according to the

Follicular Dendritic Cell Sarcoma of the Liver

Full Article

KCH Lau, LMF Tee, AYH Tsang, AXN Lo, TKL Loke

Hong Kong J Radiol 2013;16:242-5

DOI: 10.12809/hkjr1312083

Follicular dendritic cell sarcomas are a rare form of malignancy of the follicular dendritic cells. More than half of follicular dendritic cell sarcomas are of nodal origin, while the rest can involve the tonsils, nasopharynx,

Congenital Fibrosis of the Extraocular Muscles: a Rare Entity

Full Article

JJK Ip, MM Marcet, KW Yan, WWM Lam, MT Chau

Hong Kong J Radiol 2013;16:236-40

DOI: 10.12809/hkjr1311071

Congenital restriction of ocular movements could be due to various abnormalities. One of the rarest causes is fibrosis of the extraocular muscles. Congenital fibrosis of the extraocular muscles is a congenital non-progressive

Potential Role of Fluorodeoxyglucose Positron Emission Tomography–Computed Tomography in Immunoglobulin G4-related Systemic Disease

Full Article

BT Kung, CP Wong, TK Au-yong, CM Tong

Hong Kong J Radiol 2013;16:230-4

DOI: 10.12809/hkjr1312138

We report on a 60-year-old man who presented with painless obstructive jaundice, suspicious of hilar cholangiocarcinoma. Positron emission tomography–computed tomography (PET-CT)

A Rare Case of Anterior Transdural Thoracic Spinal Cord Herniation: Magnetic Resonance Imaging Features

Full Article

RKL Lee, JHY Leung, KWK Tsang, CSL Tong, AWH Ng, AT Ahuja

Hong Kong J Radiol 2013;16:227-9

DOI: 10.12809/hkjr1312107

Idiopathic transdural thoracic spinal cord herniation is a rare cause of thoracic myelopathy. The cord herniates or prolapses through an anterior or anterolateral defect of the dura mater. Magnetic resonance

Atypical Presentation of Gardner’s Syndrome

Full Article

CH Lam, TH Yeung, WC Fan, KF Ma

Hong Kong J Radiol 2013;16:224-6

DOI: 10.12809/hkjr1312120

Gardner’s syndrome is a subtype of familial adenomatous polyposis. Gardner’s syndrome is a rare disorder involving polyps in the colon and tumours in other parts of the body. We report on a 38-year-old woman

Radiological Zebra Lines Correspond to Bisphosphonate Administration in Children with Osteogenesis Imperfecta

Full Article

HN Wong, T Nozaki, M Matsusako, I Kusakawa

Hong Kong J Radiol 2013;16:219-23

DOI: 10.12809/hkjr1312135

Bisphosphonates are widely used in the treatment of osteogenesis imperfecta due to their action of limiting bone resorption by inhibiting osteoclast activity. Sclerotic bands, which are known as metaphyseal lines,

Managing the Elderly Person with Cancer: a Geriatrician’s Perspective

Full Article

TK Kong

Hong Kong J Radiol 2013;16:209-18

DOI: 10.12809/hkjr1312152

In Hong Kong, 53% of new patients with cancer were aged over 65 years, the incidence of cancer being 8-fold higher than that in younger subjects, and 75% of cancer deaths occur in people aged over 60 years. When cancer is suspected or diagnosed in an elderly person, the doctor faces multiple challenges: diagnostic uncertainty because of multiple pathologies,

Cerebral Perfusion Computed Tomography with a New Scanning Protocol and Reduced Scanning Time: Retrospective Review

Full Article

KC Chan, JM Abrigo, TCY Cheung, SW Cheung, DYW Siu

Hong Kong J Radiol 2013;16:203-8

DOI: 10.12809/hkjr1312154

Objective: To retrospectively analyse the quantitative change in cerebral blood flow, cerebral blood volume, and mean transit time after adopting a new protocol for perfusion computed tomography (PCT) where the delay time

Tumour Volume as a Predictor of Treatment Success in Patients with Laryngeal Cancer Treated with Primary Chemoradiotherapy

Full Article

C Bryant, RJ Amdur, WM Mendenhall, CG Morris, A Mancuso, A Yeung

Hong Kong J Radiol 2013;16:198-202

DOI: 10.12809/hkjr1313159

Objectives: To evaluate the prognostic significance of pretreatment tumour volume in predicting local control, with a functioning larynx, in patients with laryngeal cancer treated with primary chemoradiation.

Salvage Radiotherapy to the Prostatic Fossa Using Volumetric-modulated Arc Therapy: Early Results

Full Article

EKC Lee, KK Yuen, WH Mui, GML Law, CMM Lui, MKH Chan, FCS Wong, SY Tung

Hong Kong J Radiol 2013;16:191-7

DOI: 10.12809/hkjr1313173

Objectives: Volumetric-modulated arc therapy (VMAT) is better than intensity-modulated radiotherapy (IMRT) in terms of its plan qualities and efficiency for the treatment of prostate cancer. It remains unclear whether its use in

Prevalence and Factors Associated with Brown Adipose Tissue Detected by 18F-fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in Southern Chinese

Full Article

TM Leung, KSL Lam, CY Wong, PL Khong

Hong Kong J Radiol 2013;16:183-90

DOI: 10.12809/hkjr1313182

Objectives: This study aimed to evaluate the prevalence of brown adipose tissue, as detected by fluorine 18-fluorodeoxyglucose positron emission tomography combined with computed tomography (18F-FDG PETCT), in a Southern Chinese population. It also set out to determine associated factors with brown adipose tissue,

Eosinophilic Gastroenteritis: an Unusual Cause of Acute Abdomen

Full Article

R Dixit, V Chowdhury, P Nagpal, A Prakash, S Singh

Hong Kong J Radiol 2013;16:e13-6

DOI: 10.12809/hkjr1312101

Eosinophilic gastrointestinal disorders are relatively rare disorders characterised by eosinophilic infiltrate into any layer of the gastrointestinal tract, for example, mucosa, muscularis mucosae, and serosa, usually in association with peripheral eosinophilia.

Calcium Pyrophosphate Dihydrate Crystal Deposition Disease of the Temporomandibular Joint

Full Article

LWY Chan, CC Chan, FK Wong

Hong Kong J Radiol 2013;16:e9-12

DOI: 10.12809/hkjr1311049

Calcium pyrophosphate dihydrate crystal deposition disease of the temporomandibular joint is a rare entity that has a tendency to mimic bone tumour, leading to unnecessary surgery.

Pompe’s Disease in Siblings Taking Enzyme Replacement Therapy: Skeletal Muscle Magnetic Resonance Imaging Findings

Full Article

FNY Sin, AB Lo, CM Lee

Hong Kong J Radiol 2013;16:155-60

DOI: 10.12809/hkjr1312113

Pompe’s disease is a rare inherited muscle disorder resulting from deficiency of lysosomal acid α-glucosidase.

Nodular Fasciitis of the Masticatory Space: Magnetic Resonance Imaging Evaluation

Full Article

MG Kamalapur, PB Patil, SK Joshi, DU Shastri

Hong Kong J Radiol 2013;16:149-54

DOI: 10.12809/hkjr1312089

Nodular fasciitis is a rare benign reactive process of the soft tissues, occurring predominantly in the upper limbs and is less common in the head and neck region.

Magnetic Resonance Imaging for Chronic Graft-versus-host-disease–related Myositis and Fasciitis: a Rare Complication of Stem Cell Transplantation

Full Article

CYY Kwong, JJK Ip, WWM Lam, MT Chau

Hong Kong J Radiol 2013;16:143-8

DOI: 10.12809/hkjr1312094

Chronic graft-versus-host disease is a cellular immune-mediated donor bone marrow versus patient rejection reaction,

Accuracy of Clinicians’ Prediction of Survival and Prognostic Factors Indicative of Survival: a Systematic Review

Full Article

M Zhou, L Holden, N Lao, H Lam, L Zeng, E Chow

Hong Kong J Radiol 2013;16:168-82

DOI: 10.12809/hkjr1313179

Objectives: To review the literature and examine the accuracy of clinicians’ prediction of survival as well as prognostic factors determined to be predictive of shorter survival in terminal cancer patients.

Acute Calcific Tendinitis of the Longus Colli

Full Article

A Agrawal, A Kalyanpur

Hong Kong J Radiol 2013;16:131-6

DOI: 10.12809/hkjr1311055

Acute calcific tendinitis of the longus colli is an unusual cause of acute neck pain and stiffness.

Improving Service Provision to Manage Chemotherapy-induced Neutropenic Fever in an Oncology Unit

Full Article

FMY Lim, M Tong, CC Yau, ACH Lit, JCK Lo, N Lam, WH Wong, ACK Cheng

Hong Kong J Radiol 2013;16:123-30

DOI: 10.12809/hkjr1312157

Objectives: Neutropenic fever is a serious complication of cytotoxic chemotherapy with significant morbidity and mortality, for which prompt initiation of antibiotics improves clinical outcomes.

Active Tuberculous Endobronchitis: Computed Tomography Findings and Implications

Full Article

THT Sung, JSF Shum, WH Kwan

Hong Kong J Radiol 2013;16:117-22

DOI: 10.12809/hkjr1312149

Objective: To describe the pattern of bronchostenosis revealed by computed tomography and virtual bronchoscopy in patients with active tuberculous endobronchitis and associated pulmonary manifestations.

Cone-beam Computed Tomography of the Paranasal Sinuses: Comparison Study with Multidetector Computed Tomography

Full Article

PL Kei, JSP Tan, JL Leong, YM Kwok, WEH Lim, LL Chan

Hong Kong J Radiol 2013;16:110-6

DOI: 10.12809/hkjr1313167

Objectives: Cone-beam computed tomography (CBCT) in sinonasal imaging is fairly novel and remains limited to date. This study aimed to compare (1) the image quality of CBCT and multidetector computed tomography (MDCT), and (2) the eye lens dose for paranasal sinus imaging between these two modes of imaging.

Regional Variation within the Cerebral Cortex Evaluated by Diffusion-weighted Imaging and Apparent Diffusion Coefficients on 1.5T and 3T Magnetic Resonance Images

Full Article

TW Yeung, HY Lau, YC Wong

Hong Kong J Radiol 2013;16:100-9

DOI: 10.12809/hkjr1313172

Objective: We aimed to determine whether cerebral cortices have regional variation on diffusion-weighted magnetic resonance imaging (DW-MRI) and corresponding apparent diffusion coefficient (ADC) maps. We also aimed to explore the effect of using 1.5T and 3T MRI with respect to such regional variation.

Impact of Fractionated Stereotactic Body Radiotherapy on Liver Function in Patients with Hepatitis B Virus–related Hepatocellular Carcinoma: Clinical and Dosimetric Analysis

Full Article

CKK Choi, FAS Lee, TC Lam, FCS Wong, VY Wong, C Lui, WK Sze, SY Tung

Hong Kong J Radiol 2013;16:94-9

DOI: 10.12809/hkjr1312147

Objective: To investigate the impact of fractionated stereotactic body radiotherapy (SBRT) on liver function and identify any dosimetric parameters that may predict deterioration of liver function in patients with hepatitis B (HBV)–related hepatocellular carcinoma (HCC).

Diagnostic Flowchart and Imaging Features of Common Congenital Anomalies of the Neonatal Spine

Full Article

SSM Wong, KM Wong, MY So, VYF Leung, EKH Liu, WCW Chu

Hong Kong J Radiol 2013;16:84-93

DOI: 10.12809/hkjr1313165

Paediatric spinal pathologies are commonly encountered in clinical practice. This article summarises the normal appearance of lumbar ultrasonography (LUS) and the imaging techniques used to examine the spine in neonates.

Technetium-99m Filtrated Sulfur Colloid Lymphoscintigraphy for Assessment of the Site of Lymphatic Leakage in Chylothorax Post-oesophagectomy

Full Article

RKL Lee, K Wang

Hong Kong J Radiol 2013;16:e5-8

DOI: 10.12809/hkjr1311067

Lymphoscintigraphy is useful for assessment of lymphatic leakage after oesophagectomy. This report is of accurate assessment of the site of thoracic lymphatic leakage after oesophagectomy in a 55-year-old patient by using technetium-99m–filtrated sulfur colloid lymphoscintigraphy.

Angiosarcoma of the Spleen with Spontaneous Rupture

Full Article

HKY Tam, CC Chan, PPY Lui, PSF Lee

Hong Kong J Radiol 2013;16:e1-4

DOI: 10.12809/hkjr1312086

Primary splenic angiosarcoma is an extremely rare solid tumour. Splenic angiosarcoma is a highly aggressive malignancy associated with early metastases and poor prognosis. Most patients present with abdominal pain or a palpable abdominal mass.