Journal

Evaluation of Positron-emission Tomography in the Diagnosis of Primary Tumours in Patients Presenting with Metastases: Prospective Study

TK Au Yong, CP Wong, YK Leung, KS Chu, WCM Tong

Hong Kong J Radiol 2005;8:9-14

Objective: To study the value of positron-emission tomography using 2-fluoro-2-deoxy-Dglucose labelled with fluorine 18 in locating unknown primary tumour sites in patients presenting with metastases.

Patients and Methods: Between November 2003 and December 2004, a total of 62 consecutive

Use of Diffusion-weighted Magnetic Resonance Imaging to Differentiate between Acute Benign and Pathological Vertebral Fractures: Prospective Study

WW Yao, MH Li, SX Yang, LL Zhu

Hong Kong J Radiol 2005;8:4-8

Objective: To evaluate the effectiveness of qualitative diffusion-weighted magnetic resonance imaging in differentiating between acute benign and pathological vertebral compression fractures.

Patients and Methods: A total of 71 patients with vertebral fractures, comprising 33 with benign fractures

'Validation' of Advanced or Specialised Radiology Techniques

YL Chan

Hong Kong J Radiol 2005;8:3

No abstract available.

Intracranial Metastases from Carcinoma of the Cervix: Report of 4 Cases and Review of the Literature

P Agrawal, AK Rathi, AK Bahadur, K Singh, PK Mohanta

Hong Kong J Radiol 2005;8:112-6

Although the brain is a common site of blood-borne metastases in many cancers, a tumour in the brain secondary to cervical cancer is very rare. This report describes 4 patients with brain metastases from cancer of the cervix who were

Posterior Fossa Ependymoma: Unusual Extension into the Internal Auditory Canal in a 32-year-old Woman

T Gupta, R Sarin, R Jalali, S Juvekar

Hong Kong J Radiol 2005;8:109-11

Ependymomas are relatively rare glial neoplasms that arise from ependymal cells. The majority of cases (>75%) arise from the fourth ventricle in the posterior fossa. These tumours may expand locally, extend along subarachnoid spaces, and disseminate through the cerebrospinal fluid.

Congenital Lobar Emphysema: a Diagnostic Challenge

ZY Joazlina, ML Wastie, JA De Bruyne

Hong Kong J Radiol 2005;8:105-8

Congenital lobar emphysema is an abnormality of the lung of unknown aetiology that can present a diagnostic and therapeutic dilemma. This report describes a neonate with respiratory distress for whom an initial diagnosis of meconium aspiration syndrome was made.

5-Fluorouracil–induced Encephalopathy in a 51-year-old Man

AS Lee, TW Leung, FCS Wong, WK Sze, SY Tung, SK O

Hong Kong J Radiol 2005;8:102-4

A case of hyperammonaemic encephalopathy that developed during the administration of a widely used chemotherapy regimen is reported in a 51-year-old man. 5- Fluorouracil was considered to be the causative agent. Although encephalopathy is a rare toxic effect of

Chemotherapy for Primary Treatment of Locoregionally Advanced Nasopharyngeal Carcinoma: Update on Meta-analyses and Phase III Trials

KS Tse, HY Wong, EYL Au, KM Ma

Hong Kong J Radiol 2005;8:93-101

Nasopharyngeal carcinoma is a prevalent cancer in Southeast Asia. Radiotherapy is the standard treatment for this highly radiosensitive and chemosensitive tumour, but the outcome of locally advanced nasopharyngeal carcinoma treated by radiotherapy alone is suboptimal owing to

Management of Cerebral Metastasis: Review of 106 Patients

FCS Wong, KK Yuen, SH Lo, TY Ng, KC Lee, WK Sze, SK O

Hong Kong J Radiol 2005;8:87-92

Objective: To identify prognostic factors that could predict the outcomes of patients with cerebral metastasis and to study the application of the factors in management decisions.

Patients and Methods: The outcomes of 106 consecutive patients with radiological documentation of

Small Cell Carcinoma of the Head and Neck: the University of Florida Experience

AT Monroe, CG Morris, E Lee, WM Mendenhall

Hong Kong J Radiol 2005;8:83-6

Objective: To describe the University of Florida experience in treating small cell carcinoma of the head and neck with radiotherapy as the primary local treatment modality.

Materials and Methods: Five patients with small cell carcinoma of the head and neck

Embolotherapy with a Mixture of Lipiodol and Ethanol for Renal Angiomyolipoma: Retrospective Study

WK Tso, S Wong, J Tsang, H Tung, KS Tai, PC Tam, L Leong

Hong Kong J Radiol 2005;8:78-82

Objective: To evaluate the efficacy of embolotherapy with a mixture of lipiodol and absolute ethanol for renal angiomyolipoma.

Patients and Methods: Twelve patients underwent transcatheter embolisation for 13 symptomatic renal angiomyolipomas between November 1997 and May 2005. Of these, 2 patients

Use of Parallel Imaging in Peripheral Contrast-enhanced Magnetic Resonance Angiography: Retrospective Study

A Li, CC Chan, TW Ng, CF Lo, TKL Loke, SS Lo, JCS Chan

Hong Kong J Radiol 2005;8:72-7

Objective:To evaluate the application of a parallel imaging technique — generalised autocalibrating partially parallel acquisition — in peripheral contrast-enhanced magnetic resonance angiography.

Patients and Methods: This was a retrospective review of 17 consecutive patients with peripheral vascular disease who underwent lower-extremity

Parathyroid Carcinoma Presenting as Lung Cancer

A Dubey, R Koul, A Binahmed, A Leylek, M Rajaram

Hong Kong J Radiol 2005;8:182-4

Carcinoma of the parathyroid gland is an extremely rare entity. Most causes of the primary hyperparathyroidism are due to either adenoma or hyperplasia. Parathyroid carcinoma is a rare cause of increased parathyroid hormone and related hypercalcaemia. We report on a

Intracranial Chondrosarcoma

S Arora, PK Mohanta, AK Bahadur, AK Rathi, P Anand, P Agrawal

Hong Kong J Radiol 2005;8:179-81

Chondrosarcomas are slow-growing, malignant, mesenchymal tumours occuring only rarely in the cranial bones. Only 5% of all chondrosarcomas are located in the head-neck region; the ethmoid and sphenoid sinuses are the commonest sites. Surgery is considered the treatment of choice.

Recurrent Pineoblastoma Responsive to Chemotherapy

P Kulshrestha, P Aggrawal, S Kumar, S Arora, K Singh, AK Bahadur, AK Rathi, PK Mohanta

Hong Kong J Radiol 2005;8:175-8

Pineoblastomas are malignant embryonal tumours that are classified as suprasellar primitive neuroectodermal tumours. Incidence of pineoblastoma is approximately 0.1% to 0.3% of histogically verified primary malignant brain tumours. This case report concerns a 19-year-old male with a mass lesion in

Nodes of Rouviere in Healthy Children: Detectability and Size on Magnetic Resonance Imaging and Relationship with Changes in the Paranasal Sinuses

JSY Lam, YL Chan

Hong Kong J Radiol 2005;8:172-4

Objectives: The visibility and size of the nodes of Rouviere have not been studied in healthy children. The objectives of the present study were to study the size of these nodes in children on magnetic resonance imaging and its relation

Results of a Phase II Clinical Trial of 2-Fractionated Half-body Irradiation in Treatment of Patients with Multiple Painful Bony Metastases

KH Wong, C Gaffney, SM Chow, TM Chan

Hong Kong J Radiol 2005;8:162-71

Objective: A prospective phase II study was conducted to evaluate the effectiveness in pain palliation and toxicity of a 2-fractionated half-body irradiation.

Patients and Methods: From 25 December 2000 to 16 January 2002, 30 patients receiving half-body irradiation for pain

Radiotherapy in the Treatment of Ameloblastoma and Ameloblastic Carcinoma

M Philip, CG Morris, JW Werning, WM Mendenhall

Hong Kong J Radiol 2005;8:157-61

Objective: To determine the efficacy of radiotherapy in the treatment of ameloblastoma and ameloblastic carcinoma.

Patients and Methods: Two patients with ameloblastoma and 3 patients with ameloblastic carcinoma were treated with radiotherapy alone (1 patient) or surgery and postoperative

A Retrospective Study of Adjuvant Chemotherapy with Adriamycin plus Cyclophosphamide, Methotrexate and 5-Fluorouracil for Postoperative Carcinoma of Breast: 6-Year Experience in a Single Institution

CKK Choi, RTT Chan, GKH Au, LCY Lui

Hong Kong J Radiol 2005;8:150-6

Objective: To determine the efficacy, toxicity and prognostic factors associated with adriamycin x 4 cycles plus cyclophosphamide, methotrexate and 5-fluorouracil x 6 cycles in the adjuvant treatment of high-risk breast cancer.

Patients and Methods: The records of patients who

Scintigraphic Evaluation of Small Bowel Obstructione

K Wang, A Li, WH Luk, EPY Fung, TKL Loke, JCS Chan

Hong Kong J Radiol 2005;8:146-9

Objective: To determine the feasibility of hepatobiliary iminodiacetic acid in the evaluation of small bowel obstruction in adults.

Patients and Methods: This was a pilot study of the feasibility of technetium 99m hepatobiliary iminodiacetic acid in the

Radiological Investigation of Pulmonary Embolism: an Audit in a Teaching Hospital

VWK Au, E Veitch, S Gustafson, F Kermeen, MR Sage

Hong Kong J Radiol 2005;8:141-5

Objective: Since the introduction of computed tomography pulmonary angiography, radiological investigation of pulmonary embolism has been revolutionised. Escalating numbers of computed tomography pulmonary angiography have been performed in the past 5 years in our institution. The purpose of this study

Magnetic Resonance Pattern Recognition in White Matter Disorders

J Valk

Hong Kong J Radiol 2005;8:136-40

Magnetic resonance pattern recognition constitutes a ‘conceptual’ approach to radiological assessment, in which all of the radiological and other clinical features present are considered in combination. Systematic analysis of magnetic resonance images improves the specificity of the modality as

Side Effects of High-dose Radioactive Iodine for Ablation or Treatment of Differentiated Thyroid Carcinoma

SM Chow

Hong Kong J Radiol 2005;8:127-35

Iodine-131 or radioactive iodine benefits patients with differentiated thyroid carcinoma by treating recurrences and in reducing relapses after operation. Postoperative ablation of thyroid remnants facilitates follow-up by serial monitoring of serum thyroglobulin. The clinical benefits of reducing recurrences are well

Wide-volume Partial Breast Interstitial Brachytherapy Alone after Lumpectomy in Breast-conserving Treatment for Early Breast Cancer

RKY Wong, RKC Ngan, F Tang

Hong Kong J Radiol 2005;8:256-60

As most local recurrence after breast-conserving treatment occurs within 2 cm around the lumpectomy cavity, wide-volume partial breast rather than whole breast irradiation has been actively investigated with a view to decreasing radiation toxicities. Replacing external beam radiotherapy by wide-volume

Colonic Perforation from an Ingested Toothpick

SSM Lo, KW Siu, TK Tsang, KY Kwok, AMW Wai, HS Fung, FCY Lam, SCH Chan

Hong Kong J Radiol 2005;8:254-5

Foreign body ingestion is not uncommon but the majority of foreign objects ingested traverse the gastrointestinal tract without complications. We report a case of retroperitoneal abscess in a 38-year-old man following perforation of the colon by an ingested toothpick.

Diffusion Magnetic Resonance Imaging Findings in Acute Methotrexate Neurotoxicity

DSF Tsang, PL Khong

Hong Kong J Radiol 2005;8:250-3

We present the case of a patient with right fibular osteosarcoma, who was treated with multiple chemotherapeutic agents, including methotrexate, according to the Hong Kong Paediatric Haematology and Oncology Study Group osteogenic sarcoma protocol. After eight weeks of treatment, he

Comparison of Superparamagnetic Iron Oxide-enhanced Magnetic Resonance Imaging and 5-Phase Computed Tomography in the Detection and Characterisation of Focal Liver Lesions

GC Gan, BJJ Abdullah, G Kumar, SI Bux, KL Goh, R Vijeyasingam

Hong Kong J Radiol 2005;8:244-9

Objective: To compare superparamagnetic iron oxide-enhanced magnetic resonance imaging with 5-phase computed tomography in the detection and characterisation of focal liver lesions.

Patients and Methods: We prospectively performed 5-phase computed tomography scans followed by magnetic resonance imaging of the liver

Volumetric High-resolution Computed Tomography of the Lung—a Comparison to Standard Acquisition in Diffuse Lung Disease

JJ Kasthoori, G Kumar, ML Wastie

Hong Kong J Radiol 2005;8:233-43

Aim: The purpose of this study was to compare volumetric high-resolution computed tomography of the lungs, which can be reconstructed in different planes and subjected to various post-processing techniques, to standard high-resolution computed tomography of the lungs.

Patients and Methods: Sixty

Cardiac Output and Index in Obese and Non-obese Patients using Gated Single Photon Emission Computed Tomography Sestamibi Perfusion Imaging

JP Coffey, JC Hill

Hong Kong J Radiol 2005;8:226-32

Objective: To assess prospectively the overall prevalence of abnormal cardiac index values in a symptomatic group of patients from gated single photon emission computed tomography perfusion studies and to compare cardiac index of patients with body mass index <30 and