Portal vein embolisation prior to extended right-sided hepatic resection

ABSTRACT

Hong Kong Med J 2005;11:366-72 | Number 5, October 2005
ORIGINAL ARTICLE
Portal vein embolisation prior to extended right-sided hepatic resection
MSL Liem, CL Liu, WK Tso, CM Lo, ST Fan, J Wong
Department of Surgery, Centre for the Study of Liver Disease, University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong
 
 
OBJECTIVES. To determine whether preoperative portal vein embolisation improves the operative outcome of patients undergoing extended right-sided hepatic resection for hepatobiliary malignancy.
 
DESIGN. Prospective non-randomised study.
 
SETTING. University teaching hospital, Hong Kong.
 
PATIENTS. Ninety-two patients underwent extended right-sided hepatic resection for hepatobiliary malignancy during a 45-month period (January 2000 to September 2003). Among them, 15 (16%) underwent portal vein embolisation via a percutaneous ipsilateral approach (n=9) or through the ileocolic vein with a mini-laparotomy (n=6). The remaining 77 (84%) patients underwent hepatic resection without portal vein embolisation.
 
MAIN OUTCOME MEASURES. Operative morbidity and mortality.
 
RESULTS. Patients undergoing portal vein embolisation were older (69 years vs 55 years; P=0.009), and had significantly worse preoperative renal function (creatinine, 96 _mol/L vs 86 _mol/L; P=0.039) and liver function (bilirubin, 23 _mol/L vs 12 _mol/L; P<0.001). Portal vein embolisation resulted in an increase in the future liver remnant of 9% (interquartile range, 7-13%) of the estimated standard liver volume. The operating time for patients receiving portal vein embolisation was significantly longer (medium, 660 min vs 420 min; P<0.001) with more complicated surgery performed in terms of concomitant caudate lobectomy and hepaticojejunostomy. There was no hospital mortality in patients who underwent portal vein embolisation whereas five without treatment died (P=0.587). The operative morbidity of patients who underwent portal vein embolisation and those who did not was 20% and 30%, respectively (P=0.543).
 
CONCLUSIONS. In older patients who have worse preoperative liver and renal functions, portal vein embolisation enhances the possibility to perform extended right-sided hepatic resection for hepatobiliary malignancies with potentially lower operative mortality and morbidity.
 
Key words: Carcinoma, hepatocellular; Cholangiocarcinoma; Embolization, therapeutic; Hepatectomy; Portal vein
 
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Surgical management of substernal goitre: local experience

ABSTRACT

Hong Kong Med J 2005;11:360-5 | Number 5, October 2005
ORIGINAL ARTICLE
Surgical management of substernal goitre: local experience
TL Chow, TTF Chan, DTK Suen, DW Chu, SH Lam
Department of Surgery, United Christian Hospital, Kwun Tong, Kowloon, Hong Kong
 
 
OBJECTIVES. To examine the presentation, workup, and surgical complications of substernal goitre.
 
DESIGN. Retrospective study.
 
SETTING. Regional hospital, Hong Kong.
 
PATIENTS. Twenty-four mostly elderly patients (mean age, 60.1 years) who underwent thyroidectomy for substernal goitres between 2000 and 2003 (substernal goitres were defined as those having either a caudal mass transgressing the fourth thoracic vertebra or having more than 50% of their overall mass residing within the thorax).
 
MAIN OUTCOME MEASURES. Symptoms, histopathological diagnoses, morbidities, and complications.
 
RESULTS. Dyspnoea was the most common symptom (n=8, 33%). Three (12.5%) patients presented with acute airway obstruction; however, 13 (54.2%) were asymptomatic apart from the presence of cervical masses. Computed tomographic scans were performed on all but two patients. Malignancy was present in 12.6% of patients, or 16.8% if occult papillary carcinoma is included. Partial or full sternotomies were performed in two (8.3%) patients. Complications included recurrent laryngeal nerve injury (n=1, 2.7% of nerves at risk), transient hypoparathyroidism (n=2, 13.3% of patients at risk), haematoma (n=1, 2.7%), pneumonia (n=1, 2.7%), and wound infection (n=1, 2.7%). There was no operative mortality or permanent hypoparathyroidism. The complication rate was significantly lower in the asymptomatic patients (P=0.033 by Fisher's exact test); clinicopathological parameters were otherwise statistically comparable between the two groups.
 
CONCLUSIONS. There is rarely any mortality in thyroidectomy for substernal goitre, and the morbidity is also very low, especially in asymptomatic patients. In the absence of contra-indications, substernal goitre should be treated with early surgery rather than having it run the risk of acute airway distress or cancer.
 
Key words: Goiter, substernal; Hong Kong; Tomography, X-ray computed
 
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Curative radiotherapy for early cancers for the lip, buccal mucosa, and nose--a simple interstitial brachytherapy technique employing angiocatheters as carriers for Iridium-192 wire implants

ABSTRACT

Hong Kong Med J 2005;11:351-9 | Number 5, October 2005
ORIGINAL ARTICLE
Curative radiotherapy for early cancers for the lip, buccal mucosa, and nose--a simple interstitial brachytherapy technique employing angiocatheters as carriers for Iridium-192 wire implants
RKC Ngan, RKY Wong, FNF Tang, DLC Tang
Department of Clinical Oncology, Queen Elizabeth Hospital, 30 Gascoigne Road, Hong Kong
 
 
OBJECTIVES. To evaluate treatment outcomes following interstitial brachytherapy for cancers of the lip, buccal mucosa, or nose.
 
DESIGN. Retrospective study.
 
SETTING. Regional hospital, Hong Kong.
 
PATIENTS. A cohort of 13 patients treated uniformly by a simple interstitial brachytherapy technique employing plastic angiocatheters as carriers for Iridium-192 wires: all but one patient had T1 or T2 tumours and all but one had N0 disease.
 
MAIN OUTCOME MEASURES. Local and loco-regional control rates.
 
RESULTS. Six of the 13 patients received external radiotherapy prior to interstitial brachytherapy. A median brachytherapy dose of 70 Gy was delivered to those treated with brachytherapy alone, while 35 Gy was delivered after a median external radiotherapy dose of 50 Gy to those receiving combined treatment. The 3-year actuarial local control rate was 75%. No significant late complications were observed.
 
CONCLUSIONS. Employing a simple brachytherapy technique using angiocatheters and Iridium-192 wires, in conjunction with external radiotherapy when appropriate, produces good outcomes for patients with early lip, nasal vestibule, and buccal mucosa cancers.
 
Key words: Brachytherapy; Carcinoma, squamous cell; Head and neck neoplasms; Iridium radioisotopes; Treatment outcome
 
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Neuroimpairment, activity limitation, and participation restriction among children with cerebral palsy in Hong Kong

ABSTRACT

Hong Kong Med J 2005;11:342-50 | Number 5, October 2005
ORIGINAL ARTICLE
Neuroimpairment, activity limitation, and participation restriction among children with cerebral palsy in Hong Kong
HSS Chan, PHB Lau, KH Fong, D Poon, CCC Lam
Central Kowloon Child Assessment Centre, Child Assessment Service, Department of Health, 147L Argyle Street, Hong Kong
 
 
OBJECTIVES. To study children with cerebral palsy in Hong Kong, their neuroimpairment, activity limitation, and participation restriction in society. Parents' opinion on current medical and rehabilitation services was also sought.
 
DESIGN. Systematic survey using questionnaires.
 
SETTING. Four associations in Hong Kong: Child Assessment Service, Hong Kong Association for Parents of Children with Physical Disabilities, Association of Parents of the Severely Mentally Handicapped, and Hong Kong Physically Handicapped and Able-Bodied Association.
 
PARTICIPANTS. Parents of children with cerebral palsy.
 
MAIN OUTCOME MEASURES. Neuroimpairment, activity limitation, and participation restriction.
 
RESULTS. Information from 181 children with cerebral palsy was analysed. Among them, 56% were boys. The mean age was 7 years 6 months (standard deviation, 3 years 11 months). The most common diagnostic type was spastic cerebral palsy. Co-morbidities in children with cerebral palsy were common. Limitation in daily activities including mobility and self-care tasks was considerable and this posed great stress to parents when taking care of their children. Children's participation in both social and leisure activities was regarded as a low priority. A high percentage (70%) of parents reported difficulty in travelling. The reasons involved problems in transportation, building access (entry and exit), and attitudes of the general public. These environmental factors restricted the social participation of the children and their families. Over 75% of parents were satisfied with the current medical and rehabilitation services.
 
CONCLUSIONS. Children with cerebral palsy have multiple and complex needs. The findings of this study may serve as a reference for parents, service providers, and policy makers to work in partnership to achieve a more comprehensive health-care service for children with cerebral palsy and to facilitate better integration into the community.
 
Key words: Activities of daily living; Cerebral palsy; Developmental disabilities; Disability evaluation; Learning disorders
 
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Polycystic ovarian syndrome in Hong Kong Chinese women: patient characteristics and diagnostic criteria

ABSTRACT

Hong Kong Med J 2005;11:336-41 | Number 5, October 2005
ORIGINAL ARTICLE
Polycystic ovarian syndrome in Hong Kong Chinese women: patient characteristics and diagnostic criteria
PM Lam, RCW Ma, LP Cheung, CC Chow, JCN Chan, CJ Haines
Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
 
 
OBJECTIVES. To identify the characteristics of Hong Kong Chinese women with polycystic ovarian syndrome and to compare different diagnostic criteria.
 
DESIGN. Retrospective study.
 
SETTING. Gynae-endocrinology Clinics in the Prince of Wales Hospital, Hong Kong.
 
PATIENTS. Ninety Hong Kong Chinese women with polycystic ovarian syndrome who were diagnosed according to the hospital's criteria.
 
MAIN OUTCOME MEASURES. Prevalence of typical features of polycystic ovarian syndrome, including anovulation and hyperandrogenism (with other endocrine causes excluded), polycystic ovarian features on ultrasonography, luteinising hormone predominance, obesity, and insulin resistance.
 
RESULTS. Almost all (98.9%) patients with polycystic ovarian syndrome presented with anovulation, only 48.9% of them had clinical or biochemical evidence of hyperandrogenism. Typical ultrasound appearances of polycystic ovaries were observed in 86.7% of patients. Luteinising hormone predominance and insulin resistance were demonstrated in 67.8% and 40.7% of the cohort, respectively. Eight-six (95.6%) patients should have also been diagnosed with polycystic ovarian syndrome based on the 2003 Rotterdam new criteria. About 60% of patients who screened positive for insulin resistance had normal fasting serum glucose levels. The same proportion who had full screening for insulin resistance by oral glucose tolerance tests and fasting serum glucose to insulin ratios had discordant results of these two tests.
 
CONCLUSIONS. The 2003 Rotterdam new diagnostic criteria for polycystic ovarian syndrome are generally applicable to the Hong Kong Chinese population. Early detection of insulin resistance in patients with polycystic ovarian syndrome can be ensured by performing an oral glucose tolerance test combined with measurement of fasting serum glucose to insulin ratio.
 
Key words: Chinese; Polycystic ovarian syndrome; Reference standards
 
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Kawasaki disease in Hong Kong, 1994 to 2000

ABSTRACT

Hong Kong Med J 2005;11:331-5 | Number 5, October 2005
ORIGINAL ARTICLE
Kawasaki disease in Hong Kong, 1994 to 2000
YM Ng, RYT Sung, LY So, NC Fong, MHK Ho, YW Cheng, SH Lee, WC Mak, DML Wong, MC Yam, KL Kwok, WK Chiu
Department of Paediatrics, Queen Elizabeth Hospital, Kowloon, Hong Kong
 
 
OBJECTIVE. To describe the epidemiology, clinical characteristics, and management of Kawasaki disease in children in Hong Kong.
 
DESIGN. Retrospective survey of medical records from July 1994 to June 1997, and prospective data collection from July 1997 to June 2000.
 
SETTING. Hospitals with a paediatric unit in Hong Kong.
 
PATIENTS. Patients diagnosed with Kawasaki disease between July 1994 and June 2000 in public hospitals in Hong Kong.
 
MAIN OUTCOME MEASURES. Incidence of Kawasaki disease and coronary artery aneurysm rates.
 
RESULTS. A total of 696 cases of Kawasaki disease were reported. There were 435 (62.5%) boys and 261 (37.5%) girls giving a male to female ratio of 1.7:1. The age ranged from 1 month to 15 years 5 months with a median of 1.7 years. Infants (<1 year) constituted the largest group of patients (223,32.0%) and overall, 638 (91.7%) were younger than 5 years. Skin rash, conjunctivitis, and oral signs were among the principal clinical features present in over 80% of cases. Prominent cervical lymph nodes larger than 1.5 cm were less commonly found (24%). Coronary artery aneurysms or ectasia were present in 15.7% (109/696), 8.5% (59/696), and 5.0% (35/696) of patients at 2, 4, and 8 weeks, respectively. The incidence of Kawasaki disease per 100 000 children under 5 years was significantly higher in the prospective study period than in the retrospective period (39 vs 26, <0.001).
 
CONCLUSION. The incidence of Kawasaki disease is high in Hong Kong and is 39 per 100 000 children below 5 years of age. The coronary artery aneurysm prevalence is 5%. Intravenous gamma-globulin and high-dose aspirin is the mainstay of treatment.
 
Key words: Child; Coronary aneurysms; Incidence; Mucocutaneous lymph node syndrome
 
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Combined orbital irradiation and systemic steroids compared with systemic steroids alone in the management of moderate-to-severe Graves' ophthalmopathy: a preliminary study

ABSTRACT

Hong Kong Med J 2005;11:322-30 | Number 5, October 2005
ORIGINAL ARTICLE
Combined orbital irradiation and systemic steroids compared with systemic steroids alone in the management of moderate-to-severe Graves' ophthalmopathy: a preliminary study
CM Ng, HKL Yuen, KL Choi, MK Chan, KT Yuen, YW Ng, SC Tiu
Department of Medicine, Queen Elizabeth Hospital, 30 Gascoigne Road, Hong Kong
 
 
OBJECTIVE. To assess the efficacy and safety of combined orbital irradiation and systemic steroids in the management of moderate-to-severe Graves' ophthalmopathy.
 
DESIGN. Single-blind randomised prospective study.
 
SETTING. Regional hospital, Hong Kong.
 
PATIENTS. Sixteen patients with active moderate-to-severe Graves' ophthalmopathy who were randomly assigned to steroid therapy (ST group) or combination therapy of orbital irradiation and systemic steroids (SRT group) between June 2000 and June 2003.
 
MAIN OUTCOME MEASURES. NOSPECS scoring system, total eye score, subjective eye score, and extra-ocular muscle thickness as determined by either computed tomographic or magnetic resonance imaging scans.
 
RESULTS. The study was completed by 15 of 16 patients. Both groups experienced improvement in total eye score, soft tissue swelling, ocular motility, visual acuity, and subjective eye score at 52-week follow-up. Total eye score improved earlier in the SRT group, achieving statistical significance (P<0.05) at as early as 4 weeks of follow-up. Improvement in ocular parameters was greater and led to a significantly greater reduction in total eye score than in the ST group at weeks 16, 24, and 52. Maximum extra-ocular muscle thickness was significantly reduced in the SRT group only. No change was observed in proptosis in either group. No serious adverse effect was observed with the addition of orbital irradiation to steroid therapy.
 
CONCLUSION. A combination of orbital irradiation and systemic steroids is well tolerated and more effective than steroids alone in the treatment of active moderate-to-severe Graves' ophthalmopathy. It achieves greater and more rapid improvement in soft tissue swelling, ocular motility, and visual acuity.
 
Key words: Eye diseases; Graves' disease; Orbit/radiation effects; Steroids; Treatment outcome
 
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Primary care of patients with sexually transmitted diseases or genitourinary symptoms in Hong Kong

ABSTRACT

Hong Kong Med J 2005;11:273-80 | Number 4, August 2005
ORIGINAL ARTICLE
Primary care of patients with sexually transmitted diseases or genitourinary symptoms in Hong Kong
WCW Wong, C Chan, JA Dickinson
Department of Community and Family Medicine, The Chinese University of Hong Kong, School of Public Health, Prince of Wales Hospital, Shatin, Hong Kong
 
 
OBJECTIVES. To determine the adequacy of care received from general practitioners by patients with sexually transmitted diseases or genitourinary symptoms.
 
DESIGN. Prospective study.
 
SETTING. Hong Kong.
 
PARTICIPANTS. Diagnoses and drug data obtained from logbooks submitted by doctors studying for the Diploma in Family Medicine and candidates for Fellowship examinations between 1999 and 2002.
 
MAIN OUTCOME MEASURES. Diagnosis or symptom of a sexually transmitted disease and prescribed treatment.
 
RESULTS. Sexually transmitted diseases and genitourinary symptoms accounted for 1.1% of the workload of these community doctors in Hong Kong. The majority of patients were young adult males. The overall standard of treatment was inadequate: both multi-pharmacy and inappropriate treatment was common; in up to 30% of cases, doctors ignored local or international guidelines.
 
CONCLUSION. Primary care doctors play an important role in the diagnosis and management of sexually transmitted diseases or genitourinary symptoms in Hong Kong. A high index of suspicion should be maintained and continuing education made available if doctors are to provide an equally high standard of care.
 
Key words: Primary health care; Quality of health care; Sexually transmitted diseases
 
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Cytogenetic analysis of patients with primary and secondary amenorrhoea in Hong Kong: retrospective study

ABSTRACT

Hong Kong Med J 2005;11:267-72 | Number 4, August 2005
ORIGINAL ARTICLE
Cytogenetic analysis of patients with primary and secondary amenorrhoea in Hong Kong: retrospective study
MSF Wong, STS Lam
Department of Obstetrics and Gynaecology, Kwong Wah Hospital, 25 Waterloo Road, Hong Kong
 
 
OBJECTIVE. To estimate the incidence and type of chromosomal abnormalities in patients with primary and secondary amenorrhoea in Hong Kong.
 
DESIGN. Cytogenetic analysis and retrospective review.
 
SETTING. Clinical Genetic Service, Department of Health, Hong Kong.
 
PATIENTS. Case records of 549 patients with either primary (n=237) or secondary (n=312) amenorrhoea referred to the Clinical Genetic Service from 1 January 1991 to 30 April 2002 were reviewed. All these patients with amenorrhoea would have karyotyping (G banding) performed.
 
MAIN OUTCOME MEASURES. Clinical characteristics of patients, and incidence and type of chromosomal abnormalities in the local population.
 
RESULTS. Sex chromosome anomaly was found in 24.5% and 9.9%, respectively, of women with primary and secondary amenorrhoea. In those with primary amenorrhoea, male karyotype was identified in 8.4% and X-chromosome abnormalities in 16.0%.
 
CONCLUSION. The incidence of chromosomal abnormalities in women with amenorrhoea is similar to that reported in the literature. Chromosomal abnormalities are identified often enough to warrant karyotyping of all women with amenorrhoea.
 
Key words: Amenorrhea; Chromosome aberrations; Karyotyping; Ovarian failure, premature
 
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Idiopathic macular hole surgery in Chinese patients: a randomised study to compare indocyanine green–assisted internal limiting membrane peeling with no internal limiting membrane peeling

ABSTRACT

Hong Kong Med J 2005;11:259-66 | Number 4, August 2005
ORIGINAL ARTICLE
Idiopathic macular hole surgery in Chinese patients: a randomised study to compare indocyanine green–assisted internal limiting membrane peeling with no internal limiting membrane peeling
AKH Kwok, TYY Lai, VWY Wong
Department of Ophthalmology, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong
 
 
OBJECTIVE. To compare the anatomical and visual outcomes of primary idiopathic macular hole surgery using indocyanine green–assisted internal limiting membrane peeling versus no internal limiting membrane peeling.
 
DESIGN. Prospective randomised controlled clinical trial.
 
SETTING. University teaching hospital, Hong Kong.
 
PATIENTS. Fifty-one eyes of 49 Chinese patients with primary idiopathic macular hole were studied.
 
INTERVENTIONS. Patients were randomised to undergo pars plana vitrectomy with indocyanine green–assisted internal limiting membrane peeling (26 eyes) or surgery without internal limiting membrane peeling (25 eyes). Perfluorocarbon gas was used in all cases as internal tamponade.
 
MAIN OUTCOME MEASURES. Primary macular hole closure rate and best-corrected visual acuity.
 
RESULTS. The mean follow-up duration was 12 months (range, 6-23 months). Respectively to the indocyanine green–assisted internal limiting membrane peeling group and non–internal limiting membrane peeling group, the primary anatomical closure rate was 92.3% and 32.0% (P<0.001), whereas improvement in best-corrected visual acuity was 3.7 and 1.5 lines (P=0.002). More eyes in the first group (84.6%) had improvement of 2 or more lines of best-corrected visual acuity after surgery than in the second group (32.0%) [P<0.001]. Multivariate logistic regression showed indocyanine green–assisted internal limiting membrane peeling was the only significant predictor for primary closure of the macular hole (adjusted odds ratio=30.8).
 
CONCLUSION. Indocyanine green–assisted internal limiting membrane peeling in idiopathic macular hole surgery results in significantly better anatomical and visual outcomes compared with non–internal limiting membrane peeling in Chinese patients.
 
Key words: Basement membrane; Epiretinal membrane; Indocyanine green; Retinal perforations; Vitrectomy
 
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