Case Reports

Bilateral Spontaneous Lumbar Hernias: Computed Tomographic Diagnosis

HKS Tung, SCW Cheung, R Lee, FL Chan

Hong Kong J Radiol 2003;6:235-6

This is a report of an 80-year-old woman with spontaneous bilateral lumbar hernias. These uncommon masses were initially thought to be bilateral lumbar lipomas. Computed tomography allowed differential diagnosis, readily demonstrating the true nature of the lesions and the contents

Lymphocytic Mastitis and Rheumatoid Arthritis

HHL Chan, TPW Lam, J Nicholls, LLY Leong

Hong Kong J Radiol 2003;6:233-4

Lymphocytic mastitis is an uncommon condition associated with type I diabetes mellitus, which is known to be a T-cell mediated autoimmune disease. Hence, it is thought that lymphocytic mastitis is linked with autoimmune disorders. This report is of a patient

Magnetic Resonance Imaging Evaluation of Paraganglioma in the Cauda Equina

WT Ho, KS Tai

Hong Kong J Radiol 2003;6:230-2

Paragangliomas of the cauda equina, previously thought to be a rare disease affecting the spine, are being increasingly reported in the literature. This report is of a patient with paraganglioma arising in the cauda equina, and describes the magnetic resonance

Klippel-Trenaunay Syndrome Presenting in a Child with Vascular Malformation

KM Auyeung, SF Lee, YL Chan

Hong Kong J Radiol 2003;6:227-9

Klippel-Trenaunay syndrome is an uncommon disease mainly affecting the paediatric population. This syndrome is rare among Chinese people. This is a report of a patient with Klippel-Trenaunay syndrome with emphasis on magnetic resonance imaging, arteriogram, and venogram. The overall features

Urinary Bladder Leiomyoma

FK Wong, YFM Wong, KF Ma, CY Lui

Hong Kong J Radiol 2002;5:193-6

A case of urinary bladder leiomyoma in a patient initially diagnosed as having urethritis on account of a 2-week history of purulent urethral discharge is presented. The clinical presentation, imaging findings, and management of this rare benign tumour are discussed.

Lymphangioleiomyomatosis: Computed Tomography–guided Tru-cut Biopsy of a Retroperitoneal Mass

R Lee, KSH Tung, WK Tso, FL Chan

Hong Kong J Radiol 2002;5:190-2

A patient with lymphangioleiomyomatosis with an unusual presentation mimicking ovarian cancer is described. Computed tomography-guided tru-cut biopsy of the retroperitoneal lymph node established the histological diagnosis. Concomitant computed tomography-guided fine needle aspiration only revealed a large number of small-sized lymphocytes.

Metastatic Calcification

KF Tam, K Wang, WC Fan

Hong Kong J Radiol 2002;5:186-9

A patient with metastatic calcification is presented and the contributions of plain film, computed tomography, and bone scintigraphy in the diagnosis are discussed. The patient had a long history of end-stage renal failure, and was previously receiving peritoneal dialysis and

Amyloidosis: The Value of Bone Scintigraphy

K Wang, SL Fung, V Chan, JCS Chan

Hong Kong J Radiol 2002;5:183-5

An 80-year old woman complained of a 1-month history of dry cough. Bronchoscopy and tracheobronchial biopsy revealed tracheobronchial amyloidosis. Compted tomography scan showed narrowing of the trachea with intraluminal nodularity. Whole body and single photon emission computed tomography 99mTc pyrophosphate

Luminal Gas Mimicking Pneumatosis Intestinalis: A Cautionary Tale

WC Torreggiani, ID Lyburn, AC Harris, PL Munk

Hong Kong J Radiol 2002;5:114-6

We report the case of a patient with partial small bowel obstruction who underwent laparotomy for possible bowel ischaemia, after imaging studies suggested pneumatosis intestinalis. At surgery, the patient was shown to have small bowel obstruction due to inspissated feeds.

Porcelain Appendix: A Rare but Essential Diagnosis

KM Auyeung, CW Lai, SF Lee

Hong Kong J Radiol 2002;5:111-3

Mucocele of the appendix is a rare entity, not often considered when problems pertaining to the right lower abdominal quadrant are encountered. We describe the case of a patient with a large cystic mass in the lower abdomen, with extension

Megacalycosis Revisited

PHC Lau, AF McKenzie

Hong Kong J Radiol 2002;5:109-10

A case of megacalycosis is reported as an incidental finding in a Chinese woman with bilateral breast cancer. Megacalycosis is an uncommon condition. The radiological features and a literature review of this condition are presented.

Idiopathic Spinal Epidural Lipomatosis

RKT Lee, LF Chau, KS Yu, CW Lai

Hong Kong J Radiol 2002;5:105-8

Spinal epidural lipomatosis is most often associated with exogenous steroid therapy and endocrinopathy. Idiopathic spinal epidural lipomatosis is a rare disease. Obesity may be associated with this condition. We report the case of a patient with persistent back pain after

Solid-cystic Pancreatic Tumour (Frantz's Tumour)—An Unusual Spleno-renal Angle Tumour in a Teenager

PSF Lee, ASC Ching, YL Chan

Hong Kong J Radiol 2002;5:50-3

We report a rare case of solid-cystic pancreatic tumour presenting as a spleno-renal angle mass in a 14-year-old girl. Transabdominal ultrasound showed a well-capsulated mass with irregular heterogeneous echogenic foci intermixed with small hypoechoic components in a bizarre pattern. The

Lymphoepithelioma-like Carcinoma of the Lung

CS Cheng, WH Yeung, WK Kwok, WH Kwan

Hong Kong J Radiol 2002;5:47-9

Primary lymphoepithelioma-like carcinoma of the lung is a rare tumour. We report a patient with a solitary pulmonary nodule, unchanged on follow-up CT scans of the thorax over two years, but subsequently confirmed on histology as a lymphoepithelioma-like carcinoma of

Iliofemoral Deep Vein Thrombosis Secondary to Venous Compression by a Massively Distended Bladder

D Liu, WC Torreggiani, PL Munk, S Ho, C Morris, G Legiehn

Hong Kong J Radiol 2002;5:43-6

A case of iliofemoral deep vein thrombosis secondary to venous compression by a massively distended bladder is reported. Ascending venography was valuable in identifying the primary cause of venous obstruction, as well as guiding thrombolysis.

Chronic Thromboembolic Pulmonary Hypertension

K Wang, SSS Lo, KW Chan

Hong Kong J Radiol 2002;5:39-42

The characteristic imaging features of chronic thromboembolic pulmonary hypertension are described. This is a very rare disorder; prompt surgical treatment affords good results. The complementary use of the ventilation/perfusion scan and CT pulmonary angiogram in diagnosis, and exclusion of other

Bird's Nest Inferior Vena Cava Filter Thrombosis

KY Lau, JKW Chan, SW Pang, DJ Roebuck, LTH Tan

Hong Kong J Radiol 2002;5:35-8

We describe the case of a patient who died approximately 3 months after having had a jugular Bird’s nest inferior vena cava filter placed for prophylaxis of pulmonary embolism. Postmortem examination revealed inferior vena cava filter thrombus and thromboembolic occlusion

Acute Dural Sinus Thrombosis—Computed Tomography and Magnetic Resonance Imaging Features

KY Lau, M Au-Yeung, TH Tsoi, DJ Roebuck, LTH Tan

Hong Kong J Radiol 2002;5:29-34

Dural sinus thrombosis is a diagnosis that is not commonly thought of in the first instance by radiologists and clinicians, especially when the clinical presentation is not specific. We describe the clinical presentation of three patients with acute thrombosis of

Suprasellar Ependymoma

VCY Chiu, CM Chan, PTG Chan, HM Chiu, YLJ Cheung, CHS Chan

Hong Kong J Radiol 2001;4:169-72

Supratentorial ependymomas account for approximately 40% of intracranial ependymomas. We present an unusual case of supratentorial ependymoma, with both clinical and radiological features of a suprasellar tumour.

Retrograde Jejuno-jejunal Intussusception from Small Bowel Metastases

WH Luk, TKL Loke, WK Kwok, JCS Chan

Hong Kong J Radiol 2001;4:166-8

Retrograde intussusception is extremely uncommon, usually occurring as a complication of gastric surgery and long intestinal tube. We report a case of retrograde jejuno-jejunal intussusception with a lead point due to a pulmonary metastatic deposit.

Management of a Non-deflating Foley Catheter During Hysterosalpingography Using Ultrasound Guidance

Y Wong, LWC Ho, WK Tso

Hong Kong J Radiol 2001;4:164-5

Foley catheters are often used during hysterosalpingography examinations for the purpose of delivering contrast. Among the list of complications with hysterosalpingography, however, the problem of a non-deflating Foley catheter balloon is rarely described. Potential factors predisposing to nondeflating balloons include

Granular Cell Tumour of the Deltoid Muscle

WC Torreggiani, PL Munk, K Al-Ismail, JX O'Connell, S Nicolaou, MJ Lee, BA Masri

Hong Kong J Radiol 2001;4:160-3

Granular cell tumour is an uncommon neoplasm that generally has a benign behaviour. It typically occurs in the head and neck. The authors describe an unusual location of this tumour within the deltoid muscle of the arm.

Double Pylorus with Occult Gastrointestinal Bleeding

WH Kwan, WH Yeung, TM Chan, CS Cheng

Hong Kong J Radiol 2001;4:157-9

Double pylorus denotes an accessory canal connecting the distal stomach to the duodenal cap. It is usually an acquired condition associated with peptic ulcer disease at or before the time of fistula formation. We report a patient with double pylorus

Postvaricella Basal Ganglia Infarction—Early and Late Computed Tomography and Magnetic Resonance Imaging Findings

MSM Chan, YC Wong, AC Lee, PC Lau

Hong Kong J Radiol 2001;4:153-6

The case of a 9-year-old boy who developed acute neurological complications soon after varicella infection is reported. Computed tomography and magnetic resonance imaging showed bilateral basal ganglia lesions, which almost completely resolved on follow-up scans. There has been little previous

Computerised Tomography Appearances of Partial Lipodystrophy Syndrome in Association with Membranoproliferative Glomerulonephritis Type 2

WC Torreggiani, ID Lyburn, AC Harris, S Nicolaou

Hong Kong J Radiol 2001;4:150-2

Partial lipodystrophy is a disease in which body fat is lost in an unusual distribution, with patients often having a typically gaunt facial appearance. The disease is sometimes seen in association with mesangiocapillary glomerulonephritis type 2. We describe the computerised

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,

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