Journal

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

A Comparison of Direct Gallbladder Puncture with the Transhepatic Puncture Technique in Ultrasound-guided Cholecystostomy for High Surgical Risk Patients with Acute Calculous Cholecystitis

KW Yang, WH Luk, DHY Cho, TKL Loke, JCS Chan

Hong Kong J Radiol 2005;8:222-5

Objective: To compare the clinical response and outcome for direct gallbladder puncture and transhepatic puncture techniques in ultrasound-guided percutaneous cholecystostomy for critically ill and non-surgically fit patients with acute calculous cholecystitis.

Patients and Methods: Twenty seven consecutive critically ill and high

Use of Small Bore Tubes for Treatment of Malignant Pleural Effusions in a Palliative Care Centre

EKC Lee, KK Yuen, WK Sze, OC Li, MK Yuen

Hong Kong J Radiol 2005;8:218-21

Objective: To evaluate the outcome of malignant pleural effusion drainage using small bore catheters.

Patients and Methods: This retrospective study was conducted at the Palliative Care Centre at Tuen Mun Hospital, a regional hospital in Hong Kong. Patients with malignant

Reliability of Quantitative Assessment of Hepatic Steatosis on Breath-hold Dual Echo In-phase and Opposed-phase Gradient-echo MRI

SF Lee, YL Chan, B Tomlinson, S Ho, NWY Leung, BSP Fok

Hong Kong J Radiol 2005;8:214-7

Objective: To assess the reliability of quantitative measurement of signal intensity change in the liver on breath-hold gradient echo in-phase and opposed-phase imaging in hepatic steatosis.

Patients and Methods: The study population comprised 19 subjects with previous sonographic diagnosis of

Swallowing Function after Altered Fractionation Radiotherapy for Head and Neck Carcinoma

KH Yu, M Chua, AC Vlantis, MKM Kam, WY Lee, RKY Tsang, HY Yuen, EP Hui, ATC Chan

Hong Kong J Radiol 2005;8:207-13

Objective: To investigate swallowing function outcome in patients with head and neck cancer who received altered fractionation radiotherapy.

Patients and Methods: Forty nine patients with bulky T2 tumours or American Joint Committee on Cancer stage III/IV disease were treated with

Imaging of Muscle Injuries

LLS Wong

Hong Kong J Radiol 2005;8:191-201

Muscle injuries are common, particularly in sports medicine. Muscle injuries comprise those due to indirect trauma, including delayed onset muscle soreness and muscle strains, and those due to direct trauma, including muscle laceration and contusion. This illustrated review article demonstrates

Audit of Appropriateness and Outcome of Computed Tomography Brain Scanning for Headaches in Paediatric Patients

EYL Kan, IYC Wong, SPC Lau

Hong Kong J Radiol 2005;8:202-6

Objective: To assess the appropriateness and outcomes of computed tomography brain scanning for headaches in a paediatric population.

Materials and Methods: Medical records and radiological reports for all computed tomography brain scans performed on paediatric patients aged 18 years or younger

Radiotherapy for Pigmented Villonodular Synovitis

M Wagner, CG Morris, JD Reith, MT Scarborough, WM Mendenhall

Hong Kong J Radiol 2006;9:15-20

Objective: To report outcomes after radiotherapy used to treat diffuse pigmented villonodular synovitis.

Patients and Methods: Between 1969 and 2000, 4 patients with pigmented villonodular synovitis were treated with radiotherapy at the Department of Radiation Oncology, Health Science Center, University

The Diverse Ultrasonographic Appearances of Ectopic Pregnancies

YS Lee, SL Lam

Hong Kong J Radiol 2006;9:44-9

Ectopic pregnancy is a significant source of morbidity for women of childbearing age and represents one of the most common conditions presenting as an emergency in a busy women’s hospital. Familiarity with the wide spectrum of ultrasonographic appearances of ectopic

Kommerell's Diverticulum and Stenosis of an Aberrant Left Subclavian Artery

H Ravikumar, S Govil, A Kalyanpur

Hong Kong J Radiol 2006;9:41-3

Left aortic arch with an aberrant right subclavian artery is the most common anomaly of the aortic arch. Other rare anomalies include the occurrence of a right aortic arch with an aberrant left subclavian artery that has a diverticulum

Life-threatening Spontaneous Extraperitoneal Haemorrhage Secondary to Anticoagulant Therapy and its Management with Transcatheter Embolisation

MKW Yang, JYH Hui, WC Fan, JCS Chan

Hong Kong J Radiol 2006;9:36-40

This report is of 2 patients with unstable spontaneous extraperitoneal haemorrhage secondary to anticoagulant therapy. Active contrast extravasations were demonstrated on spiral computed tomography and angiograms, which is possibly a predictive factor for failure of conservative treatment. One patient had

Differential Uptake of Technetium-99m Methoxy-isobutyl-isonitrile in Follicular Lymphoma and Parathyroid Adenoma

MA Taher, V Warbey, JR Buscombe, AJW Hilson

Hong Kong J Radiol 2006;9:33-5

A patient with follicular lymphoma underwent computed tomography, which showed enlarged lymph nodes and a small soft tissue mass in front of the lower part of the trachea raising the suspicion of thyroid or parathyroid adenoma. A dual-phase single-photon emission

Solitary Fibrous Tumour of the Pleura Presenting as Mediastinal or Interfissural Masses

WH Kwan, L Chu, WH Yeung, JLS Khoo

Hong Kong J Radiol 2006;9:28-32

Solitary fibrous tumour of the pleura is an uncommon primary pleural neoplasm. Awareness about imaging findings is important for early detection. This report is of 2 patients with solitary fibrous tumour of the pleura in atypical locations. The first patient

Chondroblastoma of the Spine Presenting with Tetraparesis

JJ Kasthoori, ML Wastie

Hong Kong J Radiol 2006;9:24-7

Chondroblastoma of the vertebra is a rare condition. Only 26 cases have been reported in the literature; almost all of them involved the anterior and posterior component, with the exception of 1, which involved only the anterior element. There has not

Therapeutic Embolisation for Right Renal Arteriovenous Malformation

TK Tsang, CM Chan, MK Chan, AKH Lai, WK Wong

Hong Kong J Radiol 2006;9:21-3

Renal arteriovenous malformations are abnormal communications between the intrarenal arterial and venous systems. These malformations are either congenital or acquired (often by iatrogenic means). Renal arteriovenous malformations are usually identified during the evaluation of gross haematuria. Treatment can be tailored

Adjuvant Therapy for Rectal Cancer in the Era of Total Mesorectal Excision

CC Law, YT Fu, TM Chan

Hong Kong J Radiol 2006;9:3-14

Total mesorectal excision has recently replaced conventional blunt dissection as the standard treatment for rectal cancer, based on evidence indicating superior treatment outcomes achieved by this procedure. The best known and most emphasised aspect of this treatment is improved pelvic

A Large Pontine Capillary Telangiectasia Detected by Susceptibility-weighted Imaging But Inconspicuous on Diffusionweighted Imaging

Full Article

HKAK Sadana, TA Lim

Hong Kong J Radiol 2010;12:190-3

A case of symptomatic pontine capillary telangiectasia detected by susceptibility-weighted imaging is reported. The lesion was inconspicuous on diffusion-weighted imaging. To our knowledge there is only limited literature emphasising the diagnostic utility of

Unilateral Twin Ectopic Pregnancy

Full Article

M George, S Nadarajah, CL Ong

Hong Kong J Radiol 2010;12:186-9

Unilateral twin ectopic pregnancy is a rare condition and only about 100 cases have been reported in the literature. In this article, we present a case of twin ectopic pregnancy in the left fallopian tube. A 38-year-old woman who had in-vitro fertilisation came to our

Unilateral Arteriovenous Malformation Associated with Moyamoya Disease

Full Article

PD Chan, K Rahmat, N Ramli, KA Kadir

Hong Kong J Radiol 2010;12:182-5

The presence of moyamoya disease with a brain arteriovenous malformation is extremely rare. The high incidence of morbidity in such cases suggests that this combination of features confers an ominous outlook, whilst the association between these two entities remains

Coats’ Disease Mimicking Retinoblastoma in a Three-year-old Boy with Known Acute Lymphoid Leukaemia

Full Article

DD Rasalkar, WCW Chu, BK Paunipagar

Hong Kong J Radiol 2010;12:178-81

Coats’ disease and retinoblastoma are the two common types of orbital pathology in young children. These two conditions are prognostically different but have overlapping imaging features. We present a case of proven Coats’ disease to illustrate the specific

Heavily Mineralised Malignant Synovial Sarcoma Mimicking a Benign Extraskeletal Chondroma

Full Article

HT Tam, WH Ng, KC Wong, JF Griffith

Hong Kong J Radiol 2010;12:174-7

A 15-year-old boy presented with a 6-month history of painful wrist swelling. Radiographs, computed tomography, and magnetic resonance imaging revealed a heavily calcified extra-osseous soft tissue mass considered to be a benign chondroma. In view of the

Interruption of Pulmonary Artery

Full Article

KY Kwok, SSM Lo, TK Tsang, TW Fan, TL Kwan

Hong Kong J Radiol 2010;12:170-3

Congenital interruption of the pulmonary artery is a rare condition. We present a case of isolated interruption of the right pulmonary artery in a young girl and a case of interruption of the left pulmonary artery associated with Tetralogy of Fallot in an adult male. The

Inadvertent Perithrombus Deployment of OptEase Vena Cava Filter: Use of Double-filter Technique for Pulmonary Embolism Protection during Retrieval of Malpositioned Filter

Full Article

U Pua

Hong Kong J Radiol 2010;12:166-9

We describe a patient with inadvertent perithrombus deployment of an inferior vena cava filter and illustrate the use of the double-filter technique in affording pulmonary embolism protection during retrieval of the malpositioned filter.