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  • Zachary W A Klaassen
2018

“Reverse Stage Migration”: What Can Population-based Data Tell Us About Trends in Prostate Cancer Presentation?

Wallis, C. J. D. & Klaassen, Z. W. A., Sep 1 2018, In : European Urology Oncology. 1, 4, p. 321-322 2 p.

Research output: Contribution to journalEditorial

2017

Association of Obesity-Related Hemodilution of Prostate-Specific Antigen, Dihydrotestosterone, and Testosterone

Klaassen, Z., Howard, L. E., Moreira, D. M., Andriole, G. L., Terris, M. K. & Freedland, S. J., Apr 1 2017, In : Prostate. 77, 5, p. 466-470 5 p.

Research output: Contribution to journalArticle

9 Scopus citations

Comorbidity Is a Competing Factor for Disease Recurrence Postnephrectomy

Reinstatler, L., Klaassen, Z., Madi, R., Terris, M. K. & Moses, K. A., May 1 2017, In : Southern medical journal. 110, 5, p. 369-374 6 p.

Research output: Contribution to journalArticle

Contemporary cost-consequence analysis of blue light cystoscopy with hexaminolevulinate in non-muscle-invasive bladder cancer

Klaassen, Z. W. A., Li, K., Kassouf, W., Black, P. C., Dragomir, A. & Kulkarni, G. S., Jun 2017, In : Canadian Urological Association Journal. 11, 6, p. 173-181 9 p.

Research output: Contribution to journalArticle

4 Scopus citations

Dr. Hugh Hampton Young's Impact on Venereal Disease During World War I: The Chaste of American Soldiers

Dmytruk, K., Klaassen, Z., Wilson, S. N., Kabaria, R., Kemper, M. W., Terris, M. K., Lewis, R. W., Neal, D. E. & Smith, A. M., Jan 1 2017, In : Urology. 99, p. 10-13 4 p.

Research output: Contribution to journalArticle

1 Scopus citations

Editorial Comment

Klaassen, Z., Aug 1 2017, In : Urology. 106, 1 p.

Research output: Contribution to journalComment/debate

Factors predicting skeletal-related events in patients with bone metastatic castration-resistant prostate cancer

Klaassen, Z., Howard, L. E., de Hoedt, A., Amling, C. L., Aronson, W. J., Cooperberg, M. R., Kane, C. J., Terris, M. K. & Freedland, S. J., May 1 2017, In : Cancer. 123, 9, p. 1528-1535 8 p.

Research output: Contribution to journalArticle

11 Scopus citations

Metastatic renal cell carcinoma: Patterns and predictors of metastases—A contemporary population-based series

Chandrasekar, T., Klaassen, Z. W. A., Goldberg, H., Kulkarni, G. S., Hamilton, R. J. & Fleshner, N. E., Nov 1 2017, In : Urologic Oncology: Seminars and Original Investigations. 35, 11, p. 661.e7-661.e14

Research output: Contribution to journalArticle

25 Scopus citations

Pursuing fellowship training: There are no traffic jams along the extra mile

Klaassen, Z., Jun 2017, In : Canadian Urological Association Journal. 11, 6, p. 161-162 2 p.

Research output: Contribution to journalShort survey

Thoracic trauma in the oldest of the old: An analysis of the nationwide inpatient sample

Mentzer, C. J., Walsh, N. J., Talukder, A., Klaassen, Z. W. A., Leibrandt, R., Ferdinand, C. H. & O'Malley, K. F., May 1 2017, In : American Surgeon. 83, 5, p. 491-494 4 p.

Research output: Contribution to journalArticle

5 Scopus citations
2016

Clinical Disparities for Minorities and Foreign-Born Men with Undescended Versus Descended Testicular Germ Cell Tumors

Klaassen, Z., Reinstatler, L., Wilson, S. N., Ellington, C., Li, Q., Terris, M. K. & Moses, K. A., Jun 1 2016, In : Clinical Genitourinary Cancer. 14, 3, p. e251-e255

Research output: Contribution to journalArticle

3 Scopus citations

Continent Catheterizable Vesicostomy: An Alternative Surgical Modality for Pediatric Patients with Large Bladder Capacity

Peard, L., Fox, P. J., Andrews, W. M., Chen, R., McCraw, C. O., Klaassen, Z. W. A. & Neal, D. E., Jul 1 2016, In : Urology. 93, p. 217-222 6 p.

Research output: Contribution to journalArticle

2 Scopus citations

Female, Black, and Unmarried Patients Are More Likely to Present With Metastatic Bladder Urothelial Carcinoma

Klaassen, Z., DiBianco, J. M., Jen, R. P., Evans, A. J., Reinstatler, L., Terris, M. K. & Madi, R., Oct 1 2016, In : Clinical Genitourinary Cancer. 14, 5, p. e489-e492

Research output: Contribution to journalArticle

6 Scopus citations

Multiple Discordant Histology after Nephrectomy: Descriptive Analysis and Outcomes

Harlow, B. L., Klaassen, Z., Holzman, S., Reinstatler, L., Franken, A. A., Kavuri, S. K., Terris, M. K., Master, V. A. & Moses, K. A., Apr 1 2016, In : Clinical Genitourinary Cancer. 14, 2, p. e171-e175

Research output: Contribution to journalArticle

2 Scopus citations

Re: Mental Health Outcomes in Elderly Men with Prostate Cancer

Peard, L., Falkenstrom, A., Klaassen, Z. & Terris, M. K., Jul 1 2016, In : European urology. 70, 1, p. 206-207 2 p.

Research output: Contribution to journalComment/debate

Renal cell carcinoma: Links and risks

Kabaria, R., Klaassen, Z. & Terris, M. K., Mar 7 2016, In : International Journal of Nephrology and Renovascular Disease. 9, p. 45-52 8 p.

Research output: Contribution to journalReview article

45 Scopus citations

Suicide risk in patients with bladder cancer

Harper, B. T., Klaassen, Z., DiBianco, J. M., Yaguchi, G., Jen, R. P. & Terris, M. K., Mar 23 2016, In : Journal of Wound, Ostomy and Continence Nursing. 43, 2, p. 170-171 2 p.

Research output: Contribution to journalShort survey

2 Scopus citations

The association of fatty acid levels and gleason grade among men undergoing radical prostatectomy

Zhao, Z., Reinstatler, L., Klaassen, Z. W. A., Xu, Y., Yang, X., Madi, R. H., Terris, M. K., Qian, S. Y., Kelavkar, U. & Moses, K. A., Nov 2016, In : PloS one. 11, 11, e0166594.

Research output: Contribution to journalArticle

2 Scopus citations

The impact of radical cystectomy and urinary diversion on suicidal death in patients with bladder cancer

Klaassen, Z., DiBianco, J. M., Jen, R. P., Harper, B., Yaguchi, G., Reinstatler, L., Woodard, C., Moses, K. A., Terris, M. K. & Madi, R., Mar 23 2016, In : Journal of Wound, Ostomy and Continence Nursing. 43, 2, p. 152-157 6 p.

Research output: Contribution to journalArticle

8 Scopus citations
2015

A heterogeneous renal mass and arm pain in a 38-year-old african American female

Klaassen, Z., Peard, L., Wilhelm, S., Coulson, H. C., Li, Q., Kavuri, S. K., Terris, M. K. & Moses, K. A., Jun 1 2015, In : Urology. 85, 6, p. 1229-1232 4 p.

Research output: Contribution to journalArticle

A Paratesticular Serous Borderline Tumor in a Pediatric Patient with Proteus Syndrome

Klaassen, Z., Fox, P. J., McLees, L., Zheng, M., Sharma, S., Donohoe, J. M. & Neal, D. E., Dec 1 2015, In : Urology. 86, 6, p. 1218-1221 4 p.

Research output: Contribution to journalArticle

1 Scopus citations

Beyond biology: The impact of marital status on survival of patients with adrenocortical carcinoma

Klaassen, Z., Reinstatler, L., Terris, M. K., Underwood, W. & Moses, K. A., 2015, In : International Braz J Urol. 41, 6, p. 1108-1115 8 p.

Research output: Contribution to journalArticle

1 Scopus citations

Body mass index and comorbidity are associated with postoperative renal function after nephrectomy

Reinstatler, L., Klaassen, Z., Barrett, B., Terris, M. K. & Moses, K. A., 2015, In : International Braz J Urol. 41, 4, p. 697-704 8 p.

Research output: Contribution to journalArticle

8 Scopus citations

Does larger tumor volume explain the higher prostate specific antigen levels in black men with prostate cancer-Results from the SEARCH database

Klaassen, Z., Howard, L., Terris, M. K., Aronson, W. J., Cooperberg, M. R., Amling, C. L., Kane, C. J. & Freedland, S. J., Dec 1 2015, In : Cancer Epidemiology. 39, 6, p. 1066-1070 5 p.

Research output: Contribution to journalArticle

1 Scopus citations

Factors associated with suicide in patients with genitourinary malignancies

Klaassen, Z., Jen, R. P., Dibianco, J. M., Reinstatler, L., Li, Q., Madi, R., Lewis, R. W., Smith, A. M., Neal, D. E., Moses, K. A. & Terris, M. K., Jun 1 2015, In : Cancer. 121, 11, p. 1864-1872 9 p.

Research output: Contribution to journalArticle

49 Scopus citations

How can we decrease suicide risk in cases of genitourinary cancer?

Klaassen, Z., Yaguchi, G. & Terris, M. K., Aug 1 2015, In : Future Oncology. 11, 15, p. 2113-2115 3 p.

Research output: Contribution to journalEditorial

Intracavernosal Injection for the Diagnosis, Evaluation, and Treatment of Erectile Dysfunction: A Review

Belew, D., Klaassen, Z. & Lewis, R. W., Jan 1 2015, In : Sexual Medicine Reviews. 3, 1, p. 11-23 13 p.

Research output: Contribution to journalReview article

19 Scopus citations

Is clinical stage T2c prostate cancer an intermediate- or high-risk disease?

Klaassen, Z., Singh, A. A., Howard, L. E., Feng, Z., Trock, B., Terris, M. K., Aronson, W. J., Cooperberg, M. R., Amling, C. L., Kane, C. J., Partin, A., Han, M. & Freedland, S. J., May 1 2015, In : Cancer. 121, 9, p. 1414-1421 8 p.

Research output: Contribution to journalArticle

6 Scopus citations

Mentorship in urology

Klaassen, Z., Jun 15 2015, In : Journal of the Canadian Urological Association. 9, 6, p. 157 1 p.

Research output: Contribution to journalArticle

1 Scopus citations

Re: The effect of race and gender on the surgical management of the small renal mass

Klaassen, Z. W. A., Everett, R., Madi, R. H. & Terris, M. K., Jan 1 2015, In : European Urology. 68, 1, p. 163-164 2 p.

Research output: Contribution to journalComment/debate

Robert benjamin greenblatt and his many pursuits: An unlikely founder of the testosterone pellet

Reinstatler, L., Klaassen, Z., McCraw, C. O., Chen, R., Terris, M. K., Neal, D. E., Lewis, R. W. & Smith, A. M., Feb 1 2015, In : Urology. 85, 2, p. 279-282 4 p.

Research output: Contribution to journalArticle

2014

A historical perspective: Bernhard von Langenbeck German Surgeon (1810-1887)

Cesmebasi, A., Oelhafen, K., Shayota, B. J., Klaassen, Z., Tubbs, R. S. & Loukas, M., 2014, In : Clinical Anatomy. 27, 7, p. 972-975 4 p.

Research output: Contribution to journalReview article

4 Scopus citations

A single surgeon's experience with open, laparoscopic, and robotic partial nephrectomy

Klaassen, Z., Kohut, R. M., Patel, D., Terris, M. K. & Madi, R., 2014, In : ISRN Urology. 2014, 430914.

Research output: Contribution to journalArticle

2 Scopus citations

Clear cell adenocarcinoma of the prostate: A rare oncologic entity in a 42-year-old african american man

Klaassen, Z., Cleveland, C., McCraw, C. O., Burnette, J. O., Franken, A., Wilhelm, S., Kavuri, S. K., Biddinger, P. W., Terris, M. K. & Moses, K. A., Nov 1 2014, In : Urology. 84, 5, p. 997-1000 4 p.

Research output: Contribution to journalArticle

1 Scopus citations

Impact of comorbidity, Race, and marital status in men referred for prostate biopsy with PSA >20 ng/mL: A pilot study in high-risk patients

Klaassen, Z., Muller, R., Li, Q., Tatem, A. J., King, S. A., Freedland, S. J., Madi, R., Terris, M. K. & Moses, K. A., 2014, In : ISRN Urology. 2014, 362814.

Research output: Contribution to journalArticle

Re: Risk factors for renal cell carcinoma in the VITAL study

Klaassen, Z., Dibianco, J. M., Li, Q. & Terris, M. K., Oct 2014, In : European urology. 66, 4, p. 784-785 2 p.

Research output: Contribution to journalComment/debate

Re: Volume outcomes of cystectomy - Is it the surgeon or the setting?

Klaassen, Z. W. A., Shay, R., Moses, K. A. & Terris, M. K., Apr 1 2014, In : European urology. 65, 4, 1 p.

Research output: Contribution to journalComment/debate

1 Scopus citations

Re: Prognostic influence of the third gleason grade in prostatectomy specimens

Klaassen, Z., Huang, J., Tatem, A. J. & Terris, M. K., Feb 1 2014, In : European urology. 65, 2, p. 498-499 2 p.

Research output: Contribution to journalComment/debate

Robot-assisted anatrophic nephrolithotomy: Description of technique and early results

King, S. A., Klaassen, Z. W. A. & Madi, R. H., Mar 1 2014, In : Journal of Endourology. 28, 3, p. 325-329 5 p.

Research output: Contribution to journalArticle

26 Scopus citations

St George's University's Medical Student Research Institute: A novel, virtual programme formedical research collaboration

Chamberlain, R. S., Klaassen, Z., Meadows, M. C., Weitzman, S. & Loukas, M., 2014, In : West Indian Medical Journal. 63, 1, p. 81-87 7 p.

Research output: Contribution to journalArticle

1 Scopus citations

The role of indocyanine green for robotic partial nephrectomy: Early results, limitations and future directions

Klaassen, Z., Li, Q., Madi, R. & Terris, M. K., Sep 1 2014, In : Robotics. 3, 3, p. 281-288 8 p.

Research output: Contribution to journalReview article

1 Scopus citations

Thoracic outlet syndrome: A neurological and vascular disorder

Klaassen, Z., Sorenson, E., Tubbs, R. S., Arya, R., Meloy, P., Shah, R., Shirk, S. & Loukas, M., Jul 2014, In : Clinical Anatomy. 27, 5, p. 724-732 9 p.

Research output: Contribution to journalReview article

38 Scopus citations
2013

Benjamin Alcock (1801-?) and his canal

Oelhafen, K., Shayota, B. J., Muhleman, M., Klaassen, Z., Tubbs, R. S. & Loukas, M., Sep 2013, In : Clinical Anatomy. 26, 6, p. 662-666 5 p.

Research output: Contribution to journalArticle

6 Scopus citations

Bilateral metachronous colon cancer metastasis to kidneys: A rare case with a treatment dilemma

Klaassen, Z., Prabhakar, R., Madi, R., Bruce Shingleton, W. & Terris, M. K., Feb 1 2013, In : UroToday International Journal. 6, 1

Research output: Contribution to journalArticle

1 Scopus citations

Emerging association between androgen deprivation therapy and male meningioma: Significant expression of luteinizing hormone-releasing hormone receptor in male meningioma

Li, Q., Coulson, H., Klaassen, Z., Sharma, S., Ramalingam, P., Moses, K. A. & Terris, M. K., Dec 1 2013, In : Prostate Cancer and Prostatic Diseases. 16, 4, p. 387-390 4 p.

Research output: Contribution to journalArticle

8 Scopus citations

Frederick eugene basil foley: His life and innovations

Tatem, A. J., Klaassen, Z., Lewis, R. W. & Terris, M. K., May 2013, In : Urology. 81, 5, p. 927-931 5 p.

Research output: Contribution to journalArticle

1 Scopus citations

High level of dioxin-TEQ in tissue is associated with Agent Orange exposure but not with biochemical recurrence after radical prostatectomy

Li, Q., Lan, L., Klaassen, Z. W. A., Shah, S. R., Moses, K. A. & Terris, M. K., Dec 1 2013, In : Prostate Cancer and Prostatic Diseases. 16, 4, p. 376-381 6 p.

Research output: Contribution to journalArticle

8 Scopus citations