B. Yang², V. K. Tewary³

CMC-Computers, Materials & Continua, Vol.8, No.1, pp. 23-32, 2008, DOI:10.3970/cmc.2008.008.023

Abstract A three-dimensional Green's function for a material system consisting of anisotropic and linearly elastic planar multilayers with interfacial membrane and flexural rigidities has been derived. The Stroh formalism and two-dimensional Fourier transforms are applied to derive the general solution for each homogeneous layer. The Green's function for the multilayers is then solved by imposing the surface boundary condition, the interfacial displacement continuity condition, and the interfacial traction discontinuity condition. The last condition is given by the membrane and bending equilibrium equations of the interphases modeled as Kirchhoff plates. Numerical results that demonstrate the validity and More >

E. Ferretti¹, A. Di Leo¹

CMC-Computers, Materials & Continua, Vol.7, No.2, pp. 59-80, 2008, DOI:10.3970/cmc.2008.007.059

Abstract The main assumption on the basis of the identifying model of the effective law, developed by the Author, is the impossibility of considering the specimen as a continuum, when an identifying procedure from load-displacement to stress-strain in uniaxial compression is attempted. Actually, a failure mechanism with propagation of a macro-crack was found to activate from the very beginning of the uniaxial compression test forth. This leads to considering the acquired displacements as composed by two quotes: one constitutive, due to the material strain, and one of crack opening. Since the ratio between these two quotes… More >

Michelle L. Ramírez, Christopher P. Evans

Canadian Journal of Urology, Vol.14, Suppl.6, pp. 39-47, 2007

Abstract The incidence of small renal masses (< 4 cm) is increasing due to the widespread use of imaging studies. Many of these incidental lesions may remain asymptomatic or in fact be benign, and recent insight into their natural course has contributed to modifications in management. With improvements in biopsy technique and minimally invasive technologies, appropriate diagnosis and treatment of these masses are further being evaluated. Other contemporary approaches, including surveillance, laparoscopic partial nephrectomy, enucleation, ablative procedures, and high-intensity focused ultrasound, are weighed against open nephron-sparing surgery, the current gold standard for treatment. Here, we review More >

Harry S. Clarke Jr, Matthew R. Eskridge, Ahmed M. El-Zawahry, Thomas E. Keane

Canadian Journal of Urology, Vol.14, Suppl.6, pp. 24-27, 2007

Abstract Purpose: We assessed the efficacy, complications and technical advancements in salvage cryosurgical ablation of the prostate for recurrent prostate cancer after radiation therapy.
Methods: A total of 58 patients were evaluated for salvage cryosurgery using an algorithm of capromab pendetide scan and prostate biopsy from January 2003 to July 2007. Forty-seven patients underwent salvage cryosurgery and biochemical recurrence-free survival and complications were retrospectively reviewed. Mean follow-up was 24 months.
Results: Seventy percent of patients achieved a nadir PSA < 0.5 ng/ml. Overall, 51% of patients achieved a durable PSA response with a pre-salvage serum PSA < 10 predictive More >

Jorge E. Garcia, David D. Thiel, Gregory A. Broderick

Canadian Journal of Urology, Vol.14, No.2, pp. 3523-3525, 2007

Abstract Bacillus Calmette-Guerin (BCG) is a common intravesical agent utilized for superficial transitional cell carcinoma of the bladder. The potential for side effects and complications does exist secondary to the utilization of live attenuated bacteria. We present the case of a 70- year old male that developed BCG pyelonephritis and associated renal mass following the fifth of six weekly intravesical BCG therapies. The patient improved clinically and renal mass resolved following 3 months of isoniazid monotherapy without renal biopsy. More >

Mohammed Al-Qahtani, Brian Morris, Shaheenah Dawood, Ronald Onerheim

Canadian Journal of Urology, Vol.14, No.2, pp. 3514-3517, 2007

Abstract Introduction: Malignant mesothelioma involving the tunica vaginalis is an extremely rare tumor.
Case: We describe a case of a 39-year-old man who initially presented with discomfort in the left testis and underwent resection of a hydrocele in the left testis. A pathology examination of a frozen section of a lesion on the tunica identified the lesion as mesothelioma, which was confirmed by a second pathology examination. No metastatic disease was found. The patient subsequently underwent a left radical orchiectomy and a partial scrotectomy, and has been disease free for 7 years.
Discussion: The first case of malignant More >

Mustafa Sofikerim¹, Deniz Demirci¹, Figen Öztürk², Atila Tatlisen¹

Canadian Journal of Urology, Vol.14, No.2, pp. 3510-3513, 2007

Abstract This report describes an exceptionally rare case of a 64- year-old man with seminoma in abdominal cryptorchidism, leading to intestinal obstruction 40 years after curative treatment for seminoma of the other (descended) testis. More >

Lori M. Dulabon¹, Amar Singh¹, Frank Vogel², Alireza Moinzadeh¹

Canadian Journal of Urology, Vol.14, No.3, pp. 3588-3591, 2007

Abstract We report a case of a 19-year-old female who presented with right flank pain and microscopic hematuria.Three years earlier, she sustained a stab wound to the right flank and was managed conservatively. After being diagnosed with an enhancing renal mass using computed tomography (CT) scan, duplex ultrasound and angiography were performed revealing an intrarenal pseudoaneurysm. Endovascular coils were successfully employed to selectively embolize the pseudoaneurysm. More >

Stephanie H. Chen, Vladimir Mouraviev, Janice M. Mayes, Thomas J. Polascik

Canadian Journal of Urology, Vol.14, No.4, pp. 3646-3648, 2007

Abstract Prostatic abscess is a rare and potentially life-threatening disease when left untreated. We report the first case of a man who developed a prostatic abscess as a long-term complication of cryoablation for primary prostate cancer. Timely diagnosis with non-contrast computed tomography (CT) scan, retrograde CT cystogram to ensure no bladder involvement, percutaneous drainage under CT-guidance, and antibiotic treatment sensitive to the causative organism were crucial for prompt recovery. More >

George Rodrigues^1,2, Michael Lock¹, David D’Souza¹

Canadian Journal of Urology, Vol.14, No.4, pp. 3608-3615, 2007

Abstract The use of radiation therapy in the radical treatment of prostate cancer can lead to potential acute and long-term toxicity and health-related quality-of-life (HRQoL) changes. Ongoing investigation into dose-escalation, dose-per-fraction escalation, new radiation treatment technology/ paradigms, and novel systemic therapy may have either positive and/or negative effects on normal tissue toxicity/ HRQoL. Herein, common toxicity scales and HRQoL instruments that attempt to describe the deleterious effects of prostate radiation therapy are reviewed. More >