Friday, December 12, 2014

Enlarged prostate

Treating enlarged prostates

A diagram illustrating TURP, the gold standard in treating BPH.
A diagram illustrating TURP, the gold standard in treating BPH.
 
Men suffering from benign prostatic hyperplasia have a few options to manage their condition.
MANY men with enlarged prostates (benign prostatic hyperplasia, BPH) find their lives drastically changed after the lower urinary tract symptoms (LUTS), such as urgency or frequency of urination, incontinence or incomplete voiding, set in.
With such a fundamental routine becoming disrupted, many men stop going out for social activities because they worry about not having easy access to a toilet.
Or they may not sleep well at night because they keep waking up to urinate.
Fortunately, there are several types of therapies available to treat BPH and relieve those bothersome urinary symptoms.
Depending on the severity of their condition and their individual needs, men with BPH can choose from medications, minimally-invasive therapies, non-surgical therapies or herbal medicine.
Medical therapies
The three types of medications for BPH include alpha-1-adrenergic antagonists (alpha-blockers), 5-alpha reductase inhibitors (5-ARIs) and anti-muscarinics (if BPH is present with overactive bladder symptoms).
Alpha-blockers provide immediate relief and are useful for mild to moderate BPH, while 5-ARIs require long-term treatment and are more effective in men with larger prostates.
Alpha-blockers relax the smooth muscle in the bladder neck, prostate capsule and prostatic urethra, therefore, making it easier for the urine to flow.
The main side effect from certain alpha-blockers is dizziness, due to your blood pressure dropping suddenly when you stand up from a lying-down position. Other common side effects are weakness, blocked nose and retrograde ejaculation.
Meanwhile, another type of medication, 5-ARIs, reduce the size of the prostate. They need to be taken for six to 12 months before the prostate shrinks and symptoms of BPH improve.
Two types of 5-ARIs, finasteride and dutasteride, are able to significantly reduce the need for surgery and lower the risk of acute urinary retention.
However, these drugs can cause adverse side effects, such as lowered libido and erectile dysfunction (ED).
Men who do not find either alpha-blockers or 5-ARIs to be as effective as desired, may choose to be treated with a combination of both medications.
Finally, men who have BPH together with symptoms of an overactive bladder, including frequency, urgency, and incontinence, may find relief with anti-muscarinics.
These medications act on the smooth muscle to reduce involuntary bladder contractions.
Minimally-invasive therapies
Although oral medications are generally safe and effective to treat BPH, some men may find that these are not adequate to treat their condition.
This is when minimally-invasive surgical techniques may be more appropriate.
Prostate procedures may be recommended if you have incontinence, recurrent blood in the urine, inability to fully empty the bladder, recurrent urinary tract infections, kidney failure, bladder stones, and/or do not respond to medications.
Transurethral resection of the prostate (TURP) is currently the gold standard for the treatment of BPH.
TURP involves removing prostatic tissue from within the urethra to enlarge the passage for urine to flow through. It has a good outcome, and generally, very low complication rates.
Another procedure, called transurethral incision of the prostate (TUIP), involves putting a scope into the bladder via the urethra, and widening the bladder neck and prostatic urethra.
TUIP is more suitable for men who do not have very enlarged prostates.
It takes a shorter time, and there is a lower risk of requiring blood transfusion, but it has a significantly higher re-operation rate compared to TURP.
Choosing which procedure to undergo also depends on whether your age and health status allows you to tolerate long surgical procedures.
Non-surgical therapies
Alternative therapies are available for men who do not find surgical procedures suitable for their condition.
The transurethral needle ablation (TUNA) and transurethral microwave thermotherapy (TUMT) are aimed at shrinking the prostate, while prostatic stents improve urinary flow.
Prostatic stents are recommended for elderly, frail men with multiple co-existing conditions, for whom more invasive procedures requiring general anaesthesia are not suitable.
TUNA and TUMT are procedures that can be done under local anaesthesia in the clinic and do not require a hospital stay.
However, these procedures do not produce the kind of results and long-term outcome TURP does.
There are also laser procedures to reduce the size of the prostate through coagulation, vapourisation, enucleation or resection of the prostate.
However, overall, laser vapourisation, enucleation and resection have higher rates of post-operative pain and dysuria (painful urination), compared to other methods.
Herbal therapies
Many men who have been diagnosed with BPH will seek out herbal supplements from their doctor, pharmacy or Chinese medicinal stores.
Some men do not even see their doctor when they suffer from urinary problems, preferring to self-medicate with herbs instead.
Herbal therapies for prostate problems are quite common, including saw palmetto, the bark of the African plum tree, stinging nettle roots, South African star grass and rye pollen.
Saw palmetto is the most popular herbal therapy among men with LUTS.
However, more and more scientific studies are showing that saw palmetto has no benefits in the treatment of BPH.
The only advantage of this herb is its safety, as there are hardly any side effects or drug reactions from consuming it.
The most important thing to remember about herbal therapies is not to stop prescribed therapy without consulting your doctor, or to consume supplements sold by dubious manufacturers.
Always talk to your doctor and discuss why you want alternative treatment, and what your concerns are with mainstream therapy.
For more medical information, you may want to read the newly-published Men’s Health and the Prostate by the Malaysian Men’s Health Initiative (MMHI). Members of the MMHI include Prof Dr Tan Hui Meng, Prof Dr Ng Chirk Jenn, Prof Dr Low Wah Yun, Prof Dr Khoo Ee Ming, Assoc Prof Dr Tong Seng Fah, Dr Verna Lee Kar Mun, Dr Lee Boon Cheok, Prof Dr George Lee Eng Geap, Assoc Prof Dr Zulkifli Md. Zainuddin, Assoc Prof Christopher Ho Chee Kong, Assoc Prof Dr Ong Teng Aik, Dr Yap Piang Kian and Dr Goh Eng Hong. For more information, e-mail starhealth@thestar.com.my. The Star Health & Ageing Advisory Panel provides this information for educational and communication purposes only and it should not be construed as personal medical advice. Information published in this article is not intended to replace, supplant or augment a consultation with a health professional regarding the reader’s own medical care. The Star Health & Ageing Advisory Panel disclaims any and all liability for injury or other damages that could result from use of the information obtained from this article.

Monday, December 8, 2014

Prostate cancer and PSA

As there are many conditions that can cause the PSA level to go up, it is not safe to presume a diagnosis of prostate cancer from this test alone.
As there are many conditions that can cause the PSA level to go up, it is not safe to presume a diagnosis of prostate cancer from this test alone.
 
Prostate specific antigen (PSA) in the blood is commonly used to aid in the diagnosis of cancer. Should it be adopted as a routine screening test for the cancer?
THE word “cancer” strikes fear in everyone’s hearts. Among men, prostate cancer ranks as the most common cancer worldwide. In Malaysia, it is the fourth most common cancer diagnosed in men.
For prostate cancer, a test measuring the levels of prostate specific antigen (PSA) in the blood is commonly used to aid in the diagnosis of cancer.
However, the PSA test is increasingly being touted as a routine screening test for men above a certain age. This issue is shadowed by many questions, foremost among them: Should all men take the PSA test? Is it the best method for early cancer detection?
This article will attempt to clear up some of the confusion surrounding PSA testing.
How to know if you have prostate cancer
Most of the time, there are no clear symptoms related to prostate cancer. Some of the symptoms that may develop are not always clear-cut in pointing to prostate cancer as they may also be attributed to other conditions.
For instance, some men with prostate cancer may notice blood in their urine or semen, a need to urinate more frequently, slower than normal urine flow, and difficulty in getting an erection.
These symptoms can also be present in cases of an enlarged prostate, infection and bladder stones. Thus, they are not the most reliable indicators of cancer.
However, if these symptoms are present, your doctor should suspect cancer and conduct several tests to confirm the diagnosis: a digital rectal examination (DRE), a PSA test and/or a prostate biopsy.
A DRE is performed with the doctor inserting a finger into the patient’s anus to feel the prostate. Since the prostate is in front of the rectum, the prostate will be easily felt by pressing the finger on the rectal wall. The surface of the prostate tumour will usually feel irregular and hard.
At the same time, the doctor may also recommend a PSA test. The PSA is a protein produced by cells of the prostate gland. Certain medical conditions, like prostate cancer, prostatitis, urinary tract infection, enlarged prostate, injury and sexual activity, can increase PSA levels.
Because so many conditions can cause the PSA level to go up, it is not safe to presume that it’s prostate cancer from this test alone. Therefore, the doctor may prescribe antibiotics before repeating the PSA test.
It is also advisable to refrain from riding a bike or ejaculating 48 hours before getting a PSA test. If the PSA remains high, a prostate biopsy is recommended.
A prostate biopsy involves inserting an ultrasound probe into the rectum to visualise the prostate. A needle is then used to take samples of prostate tissue via the rectum. The tissues will then be examined by a pathologist through a microscope.
A prostate biopsy will be able to confirm the presence of cancer. However, a negative test does not necessarily rule out cancer because there is a possibility that the biopsy missed the area of the prostate that contained the cancer.
In this situation, a saturation biopsy (where 20-30 biopsy samples are taken) may be needed.
PSA – how high is too high?
There is a lot of controversy over PSA measurements. There is actually no cut-off point for a normal PSA reading, as the level varies with age and race.
The usual upper limit of normal for PSA given by laboratories is 4 ng/ml, across the age ranges.
However, the PSA test is not a diagnostic test; it simply predicts the risk of prostate cancer. It is also worth repeating that any cause of inflammation to the prostate may result in a raised PSA level, so it does not necessarily point to prostate cancer.
There is a high false positive rate for the PSA test – for every 100 cases of raised PSA levels, there may be 76 who do not harbour any cancer!
PSA testing is also used in the treatment of prostate cancer, for active surveillance. Active surveillance is a means of monitoring the prostate cancer, using regular tests, to keep tabs on its progression and delay unnecessary treatment.
In active surveillance, the doctor will monitor the rate at which the PSA level changes (PSA velocity) or the speed at which the PSA values double (PSA doubling time). This allows doctors to determine whether they need to switch to active treatment to treat the cancer.
Do you need the PSA test?
Many men and doctors still believe that the PSA test is a beneficial tool in screening for prostate cancer. However, we need to treat the PSA test with great caution, especially when using it in men who have no signs or symptoms of cancer.
Over 90% of prostate cancers detected by screening are localised or early stage cancers. They are unlikely to cause death or disability because they are slow-growing tumours.
Yet, most of the men with early stage cancers detected through PSA testing will receive treatment for their cancer. This can cause more harm than benefit, as early treatment of prostate cancer identified through screening will lead to side effects, without actually improving survival rate.
Another concern with using PSA for screening is that it usually necessitates a prostate biopsy to confirm the diagnosis. Despite this invasive procedure, about 75% of men with abnormal PSA levels who proceeded to have a biopsy turned out not to have any cancer.
The US Preventive Services Task Force (USPSTF) does not recommend routine PSA screening for men without symptoms. Therefore, men need not be pressured to take a PSA test, unless they are above 50 years old, have lower urinary tract symptoms, and have a family history of prostate cancer.
If you are unsure whether you fall into this category, ask your doctor. You should discuss your risk factors and prostate symptoms (if any) with the doctor, and the potential harm of screening.
Do not trust anyone who claims that you can diagnose prostate cancer from a PSA test alone.
The members of the MMHI are Prof Dr Tan Hui Meng, Assoc Prof Dr Ng Chirk Jenn, Prof Dr Low Wah Yun, Prof Dr Khoo Ee Ming, Assoc Prof Dr Tong Seng Fah, Dr Verna Lee Kar Mun, Dr Lee Boon Cheok, Prof Dr George Lee Eng Geap, Assoc Prof Dr Zulkifli Md. Zainuddin, Dr Christopher Ho Chee Kong, Assoc Prof Dr Ong Teng Aik, Dr Yap Piang Kian and Dr Goh Eng Hong. For further information, e-mailstarhealth@thestar.com.my. The information provided is for educational and communication purposes only and it should not be construed as personal medical advice. Information published in this article is not intended to replace, supplant or augment a consultation with a health professional regarding the reader’s own medical care. The Star does not give any warranty on accuracy, completeness, functionality, usefulness or other assurances as to the content appearing in this column. The Star disclaims all responsibility for any losses, damage to property or personal injury suffered directly or indirectly from reliance on such information.
If you want to learn more about the prostate, you can get a copy of “Men’s Health and The Prostate” published by MMHI, available at RM45 each. To obtain copies, contact Ms Poh or Mr Teo at 03-56391777; fax: 03-56391870; email:perandro@hotmail.com. Proceeds from the sale of this book go towards the research funds of the Malaysian Society of Andrology and The Study of The Aging Male. The book can be delivered to any address within Malaysia by mail or courier without any additional charge.

Saturday, November 29, 2014

MSASAM Executive Council 2013-2016


The recently elected MSASAM council for 3 year term

President:                      Prof Dr Zulkifli Md Zainuddin

Honorary President :     Prof Dato' Dr Tan Hui Meng

Vice President:             Dr Clarence Lei

Secretary:                     Assoc Prof Dr Christopher Ho Chee Kong

Deputy Secretary:        Assoc Prof Dr George Lee Eng Giap

Committee members:   Prof Dr Ng Chirk Jenn
                                      Assoc Prof Dr Ong Teik Aik
                                      Prof Dr Tong Seng Fah
                                      Prof Dr Low Wah Yun
                                      Dr Kheng Kien Soo
                                      Datuk Dr Nor Ashikin
                                      Prof Dr Khoo Ee Ming
                                      Dr Yap Piang Kian
                                      Dato Hj Azhari Rosman