Publications by authors named "Hau Choong Aw"

5 Publications

  • Page 1 of 1

A Large Stone Within a Ureteroceles: A Diagnostic Pitfall and the Utility of Holmium Laser Deroofing as a Viable Surgical Option.

J Endourol Case Rep 2018 1;4(1):18-20. Epub 2018 Feb 1.

Department of Urology, Casey Hospital, Monash Health, Berwick, VIC, Australia.

We describe a case of a partial unilateral duplex system and ureterocele containing a 4 cm stone in a 66-year-old woman who presented with renal colic. Cystoscopic stone removal and deroofing of the ureterocele were performed and a ureteral stent was placed for a total of 6 weeks. Our case is unique as it highlighted the diagnostic pitfalls of ureteroceles, especially when obscured by a large calculus. We also described the use of a Holmium laser to simultaneously incise the ureterocele and fragment the calculus.
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February 2018

Overactive pelvic floor muscles (OPFM): improving diagnostic accuracy with clinical examination and functional studies.

Transl Androl Urol 2017 Jul;6(Suppl 2):S64-S67

Western Health, Footscray, Melbourne, Australia.

Background: To identify the functional correlation of overactive pelvic floor muscles (OPFM) with cystoscopic and fluoroscopic urodynamic studies (FUDS), including urethral pressure measurements.

Methods: Patients refractory to conservative therapy including bladder retraining, medications and pelvic muscle exercises for a variety of gamut of storage and voiding disorders were evaluated. Prospective data for 201 patients across both genders who underwent flexible cystoscopy and urodynamics for lower urinary tract symptoms (LUTS) refractory to conservative management between 01 Jan 2014 and 01 Jan 2016 was collected. Factors studied included history of LUTS, voiding patterns, physical examination, cystoscopic findings and functional studies, with maximum urethral closing pressure (MUCP).

Results: A total of 201 were patients recruited. The 85 were diagnosed with OPFM based on clinical presentation and presence of pelvic floor tenderness on examination. Significant differences were noted on functional studies with FUDS and urethral pressure measurement. Subjects with pelvic floor tenderness were found to have a higher (MUCP) at 93.1 cm H2O compared to 80.6 cm H2O (P=0.015).

Conclusions: There are distinct characteristics of OPFM on clinical examination and functional studies, in particular MUCP. In patients refractory to conservative treatments, specific urodynamics tests are useful in sub-categorising patients. When OPFM is diagnosed, the impact on patient management is significant, and targeted intervention with pelvic floor physiotherapy is central in the multimodal approach of this complex condition.
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July 2017

Trends in incidence and survival for upper tract urothelial cancer (UTUC) in the state of Victoria--Australia.

BJU Int 2016 Apr 21;117 Suppl 4:45-9. Epub 2015 Oct 21.

Bristol Urological Institute, Bristol, UK.

Objective: To investigate the incidence and mortality trends of upper tract urothelial cancers (UTUC) in Victoria over the last decade.

Patients And Methods: Age-adjusted incidence and mortality rates were calculated for UTUC. These were identified using data from the Victorian Cancer Registry from 2001 until 2011 based on histological diagnoses. Age at diagnosis, sex and demographical location were compared.

Results: The age-standardised incidence of UTUC remained stable from 2001 to 2011. There were 278 deaths from UTUC over this period with an overall 5-year survival rate of 32%. There was no significant difference in survival between 2001-06 and 2007-11 (30% vs 36%, respectively). Lower age at diagnosis was associated with a significant improvement in survival (P = 0.01). Sex and geographical location appeared to have no effect on survival.

Conclusion: The 5-year survival rates for UTUC in Victoria are poor, particularly in comparison to worldwide data. In contrast to worldwide trends, the incidence of UTUC appears to be stable. No significant improvement in 5-year survival rates over the short study period was identified. These findings highlight the difficulties in managing this rare yet deadly malignancy.
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April 2016

Cervical Langerhans cell histiocytosis (histiocytosis X).

ANZ J Surg 2016 Dec 31;86(12):1056-1057. Epub 2014 Jul 31.

Department of Ear, Nose & Throat/Head & Neck Surgery, Monash Medical Centre, Melbourne, Victoria, Australia.

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December 2016

Outcomes of patients with appendicitis who present to an outer metropolitan hospital.

ANZ J Surg 2012 May 28;82(5):338-41. Epub 2012 Mar 28.

Department of Surgery, Dandenong Hospital, Melbourne, Victoria, Australia.

Background: The present study investigates patients with acute appendicitis who presented to a hospital with no acute surgical service (group A) and compares the outcomes of these patients with those that presented to a tertiary centre with an acute surgical service within the same health network (group B). All group A patients were transferred to the group B hospital for appendicectomy.

Methods: During a 10-month period, 257 patients (80 in group A, 177 in group B) with acute appendicitis were analysed retrospectively. Demographics, emergency department parameters, time to waiting bay, time to surgery, operative time, complications, length of stay and the stage of appendicitis were all noted for each group. A comparison of each of these parameters was made between the two groups of patients.

Results: There were 80 patients in group A and 177 patients in group B. There was a significant difference between the two groups in the fields of length of stay in the emergency department (P = 0.003), bed availability (P = 0.038), time to waiting bay (P = 0.006) and time to surgery (P = 0.006). There was no significant difference in the total length of stay and complication rates between the two groups (P = 0.58 and 0.78, respectively).

Conclusion: This study concludes that patients with acute appendicitis presenting to a hospital with no acute surgical services had a greater waiting period prior to surgery. However, this did not translate into greater complication rates or length of stay for these patients. We propose a prospective study to further analyse the outcomes in such patients.
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May 2012