Journal

Treatment of Polycythemia Vera: A Clinical Oncology Perspective

CC Tong

Hong Kong J Radiol 2001;4:122-7

Polycythemia vera is a clonal myeloproliferative disorder. The Polycythemia Vera Study Group was established in 1967; its earliest accomplishment was to create a set of diagnostic criteria for polycythemia vera that have since proven their value. The Polycythemia Vera Study

Laryngeal Carcinoma

JM Henk

Hong Kong J Radiol 2001;4:119-21

The management of laryngeal cancer is reviewed in the context of the Clinical Practice Guidelines of the Coordination Committee in Clinical Oncology of the Hospital Authority. The relative merits of surgery and radiotherapy for various tumour stages is discussed. Chemotherapy

Treatment of Laryngeal Cancer

WM Mendenhall, RJ Amdur

Hong Kong J Radiol 2001;4:116-8

Surgery and radiation therapy are the main treatment modalities for laryngeal cancer, although patients with unfavourable disease may require a combination of radiotherapy and chemotherapy. Computed tomography or magnetic resonance imaging is required to stage the cancer and decide on

Tarsal Tunnel Syndrome Secondary to a Ganglion

KS Yu, MF Lee, LF Chau

Hong Kong J Radiol 2001;4:234-7

A case of tarsal tunnel syndrome secondary to a ganglion is described. Both ultrasonography and magnetic resonance imaging clearly showed the presence of a ganglion compressing the medial plantar nerve within the tarsal tunnel. The detection of a space-occupying

Type IV Posterior Dislocation of the Acromioclavicular Joint

KS Yu, MF Lee, LF Chau

Hong Kong J Radiol 2001;4:231-3

A case of type IV injury of the right acromioclavicular joint dislocation is described Detection of a type IV injury is important because surgery is advised. Computed tomography scanning is necessary to confirm the clinical suspicion of a type IV

Recanalization of Superficial Femoral Artery Occlusion—The Subintimal Approach

TKL Loke

Hong Kong J Radiol 2001;4:226-30

The technique of subintimal angioplasty or percutaneous intentional extra luminal angioplasty for recanalization of femoropopliteal occlusions in critical limb ischaemia is described in detail. Various indications and contraindications are outlined. The technique is easy to learn and offers a high

Focused Abdominal Sonography in Trauma

SS Lingawi

Hong Kong J Radiol 2001;4:222-5

Clinical assessment of the abdomen for possible intra-abdominal injury following blunt abdominal trauma is often unreliable, due to decreased patient consciousness, neurological deficits, medications, or other associated injuries. Diagnostic peritoneal lavage is superior to clinical examination in assessing abdominal injuries,

Pleuropulmonary Blastoma in an Infant Presenting with Tension Pneumothorax

JLY Leung, JPY Tsao, AKH Lai, TW Fan, SCH Chan

Hong Kong J Radiol 2001;4:219-21

Pleuropulmonary blastoma is one of the rarest tumours occurring in childhood. The pathogenesis and therapeutic management of this condition remain controversial. We report the case of an 8-month-old girl with cystic pleuropulmonary blastoma (type 1), presenting with respiratory distress and

Imaging of Merkel Cell Carcinoma

CR Jayakumar, AF Hussain

Hong Kong J Radiol 2001;4:213-8

Merkel's cell carcinoma is a rare, primary cutaneous, neuroendocrine tumour that is locally aggressive and has potential for metastatic spread. A 39-year-old female patient with biopsy-proven Merkel's cell carcinoma of the lower extremity is described with regard to tumour size,

Computed Tomography of Paediatric Atlanto-axial Rotatory Subluxation: The Multiple Image Addition Method

K Wang, TKL Loke

Hong Kong J Radiol 2001;4:209-12

Paediatric atlanto-axial rotatory subluxation is an uncommon condition which may be catastrophic, even after minor trauma, if it is not recognised promptly. Many imaging methods may be used to diagnose the condition, but there is still no consensus as to

Malignant Spinal Cord Compression Treated with Palliative Radiotherapy: The Prince of Wales Hospital Experience

LC Wong, P Choi

Hong Kong J Radiol 2001;4:202-8

Objective: To assess the functional outcome and survival of patients with malignant spinal cord compression following palliative radiotherapy, with or without surgery.

Materials and Methods: Medical records of 50 patients with malignant spinal cord compression, scheduled for palliative radiotherapy between

Thoracic Lymphadenopathy in Sarcoidosis: Distribution Pattern Among Chinese Patients in Hong Kong

WH Kwan, WH Kwok, WH Yeung, CS Cheng

Hong Kong J Radiol 2001;4:196-201

Objective: To investigate the distribution of thoracic lymphadenopathy in Chinese patients presenting with sarcoidosis.

Materials and Methods: Four patients with sarcoidosis (2 male and 2 female with a mean age of 35.2 years) were diagnosed at Ruttonjee Hospital from 1994

Radiotherapy for Major Salivary Gland Carcinoma: A Single Institution Experience

KH Au, TS Choy, KC Ngan

Hong Kong J Radiol 2001;4:189-95

Objective: To evaluate the outcome and natural history of patients with major salivary gland carcinomas treated at Queen Elizabeth Hospital between 1982 and 1998.

Patients and Methods: The records of 111 patients with major salivary gland carcinomas who were referred

The Sphenoid Sinuses: Computed Tomographic Assessment of Septation, Relationship to the Internal Carotid Arteries, and Sidewall Thickness in the Malaysian Population

BJ Abdullah, S Arasaratnam, G Kumar, K Gopala

Hong Kong J Radiol 2001;4:185-8

Objective: To evaluate the septation, wall thickness, and relationship of the sphenoid sinuses to the internal carotid arteries on computed tomography.

Methods: Seventy patients with normal sphenoid sinuses were evaluated. Scans were done in both axial and coronal planes. The number

Lens Exclusion in Computed Tomography Scans of the Brain—The Local Practice

KF Lai, YK Cheung, CB Tan, E Tsui, SK Yu

Hong Kong J Radiol 2001;4:181-4

Objectives: To review protocols used in Hong Kong public hospitals for computed tomography brain scans, with a view to highlighting potential radiation damage to the lens with particular scanning planes.

Methods: Following a survey of radiological practice in 8 local hospitals,

Coexistence of Malignant Meningioma and Anaplastic Ganglioglioma

HL Chau, CM Chan, WM Pong, TC Tan, JY Cheung, SC Chan

Hong Kong J Radiol 2001;4:297-306

The case of a 45-year-old Chinese man with coexisting intracranial tumours is reported. Following presentation with left hemiparesis, computed tomography and magnetic resonance imaging of the patient’s brain identified a large, soft tissue mass, with massive oedema in the adjacent

Arterio-portal Fistula Following Recent Liver Biopsy

WK Kan, KY Lau, WT Fung, KH Fung

Hong Kong J Radiol 2001;4:294-6

Arterio-portal fistula may develop at the biopsy site after percutaneous liver biopsy and demonstrates a characteristic appearance on angiography and Lipiodol computed tomography scan of the liver performed shortly after the biopsy. Radiologists should be familiar with these findings in

Appendiceal Diverticulosis in a Chinese Patient

MYF Wong , WK Chau

Hong Kong J Radiol 2001;4:291-3

Appendiceal diverticulosis is a rare entity. An inflamed appendix has a higher perforation rate if associated with diverticulitis. Barium enema and computed tomography are useful in demonstrating this lesion and its associated complications. This article describes the radiographic findings in a

Neonatal Total Parenteral Nutrition Ascites Secondary to Umbilical Venous Catheterisation

JYH Hui, KKL Lo, J Lo, MLM Chan, JCS Chan

Hong Kong J Radiol 2001;4:288-90

Two cases of hepatic perforation with total parenteral nutrition ascites and hepatic calcification, are reported. Hepatic perforation is a rare complication of umbilical venous catheterisation, resulting in intraperitoneal extravasation of the total parenteral nutrition fluid.

Parosteal Osteosarcoma Arising from a Rib: Imaging Features with an Emphasis on Magnetic Resonance Imaging

WC Torreggiani, DW Struk, K Al-Ismail, PL Munk, K Evans, JX O’Connell

Hong Kong J Radiol 2001;4:284-7

Parosteal osteosarcomas are uncommon neoplasms that typically affect the long bones. Primary involvement of a rib is very rare. The imaging features of a parosteal osteosarcoma involving a rib are described, including the magnetic resonance imaging features, which have not

Cervicothoracic Intradural Lipoma: Features on Magnetic Resonance Imaging

WWM Lam, NMC So

Hong Kong J Radiol 2001;4:281-3

Intraspinal intradural lipomas are rare congenital tumours. This case report describes a patient with an intramedullary cervicothoracic lipoma, demonstrated on magnetic resonance imaging and treated by subtotal resection and laminectomy. The clinical and pathological features of the case are discussed.

Radiological Features of Isolated Unilateral Absence of the Pulmonary Artery

MWC Yiu, DV Le, Y Leung, CGC Ooi

Hong Kong J Radiol 2001;4:277-80

We report a case of isolated unilateral absence of the pulmonary artery, a rare congenital anomaly, in a woman with exertional dyspnoea. The chest radiograph appearances of this anomaly are often mistaken for other conditions, such as Swyer-James-MacLeod’s syndrome or

Fracture of the Costal Cartilage: Computed Tomography Assists Diagnosis

WC Torreggiani, ID Lyburn, F Thornton, MJ Lee

Hong Kong J Radiol 2001;4:274-6

Rib fractures are common and almost always involve the osseous component of a rib. They are typically diagnosed on plain film. Fractures of the costal cartilage are rare and are invisible on plain film. We describe a case in which

A New Method for Fixation of Drainage Catheters

BJJ Abdullah

Hong Kong J Radiol 2001;4:272-3

This technical note reports on a new method of anchoring drainage catheters developed at the University of Malaya Medical Centre, based on the use of cable ties. This method can be implemented at a fraction of the cost of commercial

Magnetic Resonance Imaging Evaluation of the Clivus and Nasopharyngeal Carcinoma

KT Wong, YL Chan, C Metreweli

Hong Kong J Radiol 2001;4:268-71

Objectives: To establish the age-related distribution of clival marrow magnetic resonance imaging appearances in ethnic Chinese and to compare these findings with the clival marrow magnetic resonance imaging appearances seen in Chinese patients with nasopharyngeal carcinoma.

Materials and Methods: T1-weighted

Viewing Conditions in Diagnostic Imaging: A Survey of Selected Malaysian Hospitals

S Lau, KH Ng, BJJ Abdullah

Hong Kong J Radiol 2001;4:264-7

Objectives: To assess the appropriateness of viewbox and display monitor luminance and radiology reading room illumination in selected Malaysian hospitals.

Materials and Methods: The luminance of viewboxes was measured in 4 hospitals, along with the display monitors in 1 of

Comparison of Magnetic Resonance Spectroscopic Imaging and Single Voxel Magnetic Resonance Spectroscopy for Suspected Recurrent Brain Tumour or Radiation Necrosis

YL Chan, H Schlemmer, DKW Yeung, T Wilhelm, P Bachert

Hong Kong J Radiol 2001;4:259-63

Objective: To qualitatively and quantitatively compare spectra obtained on single voxel spectroscopy and magnetic resonance spectroscopic imaging in suspected recurrence of brain tumour or radiation necrosis.

Patients and Methods: Six patients with suspected recurrence of brain tumour or radiation necrosis

Multislice Spiral Computed Tomography in Cardiac Imaging

C Hong, C Becker, R Bruening, MF Reiser

Hong Kong J Radiol 2001;4:252-8

Objective: Multislice computed tomography is an emerging technology with the potential for non-invasive coronary investigation. The aim of this study was to evaluate the feasibility and limitations of multislice computed tomography in the detection of coronary artery disease.

Patients and Methods: