Author | Thomas E. Keane, MD


Need for Mature Evidence to Validate HIFU

February 01, 2008

The use of high-intensity focused ultrasound (HIFU) as a method for ablation of a localized tumor growth is not new. Several attempts have been made to apply the principles of HIFU to the treatment of pelvic, brain, and gastrointestinal tumors. However, only in the past decade has our understanding of the basic principles of HIFU allowed us to further exploit its application as a radical and truly noninvasive, intent-to-treat, ablative method for treating organ-confined prostate cancer. Prostate cancer remains an elusive disease, with many questions surrounding its natural history and the selection of appropriate patients for treatment yet to be answered. HIFU may play a crucial role in our search for an efficacious and safe primary treatment for localized prostate cancer. Its noninvasive and unlimited repeatability potential is appealing and unique; however, long-term results from controlled studies are needed before we embrace this new technology. Furthermore, a better understanding of HIFU's clinical limitations is vital before this treatment modality can be recommended to patients who are not involved in well-designed clinical studies. This review summarizes current knowledge about the basic principles of HIFU and its reported efficacy and morbidity in clinical series published since 2000.

Commentary (Corica/Keane): Organ Preservation in Muscle-Invasive Bladder Cancer

March 01, 2005

This is a timely review on thecurrent status of selective bladderpreservation for muscleinvasivebladder cancer. Although controversial,the concept is extremely attractiveto patients, and evidence fromretrospective and/or small series demonstrateits efficacy. Most of these trials,however, have included highlyselected patients. Unfortunately, thereare few, if any, ongoing randomizedcontrolled trials comparing radical cystectomyto bladder-preserving protocols.Although the overall 5-yearsurvival rate for radical cystectomy andtrimodality therapy is approximately50%, patients with pure T2 disease frequentlyachieve 5-year survival ratesapproaching 70%.[1-3] While it is clearlybeyond the scope of this editorial togo into an in-depth analysis of all thestudies reported to date, several significantquestions remain.

Commentary (Keane): Prostate-Specific Antigen as a Marker of Disease Activity in Prostate Cancer

August 01, 2002

This is a well-written and timely review of a topic that has recently become both complex to urologists and confusing to nonurologists. The authors discuss the physiology of prostate-specific antigen (PSA) and its role in a variety of clinical situations, highlighting the areas of proven utility and identifying areas of controversy.

Maintenance Therapy for Superficial Bladder Cancer

January 01, 2001

Transurethral resection remains the standard for first-line treatment of transitional cell carcinoma of the bladder. This technique clearly defines the pathologic grade and is essential in determining the clinical stage of