Dr. El-Nahas AR

Urology Dept., Urology & Nephrology Center

 


Personal Data
| Qualifications & Positions | Speciality | Attended Courses | Attended Conferences
Presentations | Publications | Honors & Prizes | Thesis Supervision | Reviewer for International Journals | References

Personal Data

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Name

Ahmed Mohamed Refat EL-Nahas

Marital Status

Married and have 3 children

Date of Birth

1st December, 1969

Office Address

Urology & Nephrology Center, EL-Gomhoria Street, PO: 35516, Mansoura-Egypt.

Home Address

10th EL-Badaly Street, Thanawia district, 35511
Mansoura, Egypt

Telephone

Work: +20 (50) 2262222, Home: +20 (50) 2216270, Mob.: 20 (12) 1136899

Qualifications & Positions

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  1. Graduated from Mansoura Faculty of Medicine with Excellent Degree (Gold Medalist-First Degree Honor), November 1993
  2. Internship House Officer, Mansoura University Hospitals from 1/3/1994 to 28/2/1995.
  3. General practitioner in Talkha General Hospital, Talkha, from 1/3/1995 to 30/6/1995.
  4. Resident in Urology, Urology and Nephrology Center, Mansoura University from 1/9/1996 to 24/11/2000.
  5. Master Degree in Urology, Mansoura Faculty of Medicine, Very good Degree, May 2000.
  6. Assistant lecturer of Urology, Urology and Nephrology Center, Mansoura University from 25/11/2000 to 27-2-2005.
  7. Lecturer of Urology, Urology and Nephrology Center, Mansoura University since 27-2-2005.

Theses

  • "Screening of prostatic carcinoma among urologic patients at risk".
    A thesis submitted for partial fulfillment of the master degree in Urology, Urology department, Urology and Nephrology Center, Mansoura University, Egypt.
  • "Ureteropelvic junction obstruction: Evaluation of minimally invasive management"
    A thesis submitted for partial fulfillment of the Medical Degree in Urology, Urology department, Urology and Nephrology Center, Mansoura University, Egypt, 2004.
Speciality

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  1. Endourology.
  2. Urologic laparoscopy.
  3. Extracorporeal Shockwave Lithotripsy.
Attended Courses:

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  1. 4th Annual European course in Urology: September 11-15, 1999. Rome, Italy.
  2. Endourology 2001 Ureterscopy and Percutaneous Endoscopy: March 9-10, 2001. San-Joun, Puerto Rico.
  3. Advanced course in laparoscopy: March 15, 2003. Madrid, Spain.
  4. Shockwave Lithotripsy Update: May 9, 2004. San Francisco, USA.
  5. Laparoscopic treatment of renal and adrenal surgery: May 10, 2004. San Francisco, USA.
  6. Decision making in endourology: May 22, 2005 San Antonio, USA.

Memberships:

  1. Egyptian Medical Syndicate.
  2. Egyptian Urological Association.
  3. American Urologic Association.
  4. European Association of Urology (EAU).
  5. Egyptian Society of Laparoscopic Surgery (ESLS).
  6. Endourology Society.

Present Position:

Lecturer of urology, Urology and Nephrology Center, Mansoura University, Egypt.

Attended Conferences:

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  • Annual Conference of the American Urologic Association.
    - San Francisco, USA, May 8-13, 2004.
    - San Antonio, USA, May 21-26, 2005.
    - Orlando, Florida, USA, May 17-23, 2008.
  • Congress of the European Association of Urology
    - Madrid, Spain, March 12-15, 2003.
    - Paris, France, April 5-8 2006.
    - Berlin, Germany, March 21-24 2007.
  • World Video Urology Conference, Singapore March 1-3 2007.
  • World Congress of Endourology
    - Amsterdam, Netherlands, August 23-26, 2005.
  • Annual conference of the Egyptian Urologic Association since 1996 till 2008.
  • Annual conference of the Pan African Urologic Surgical Association (PAUSA).
    - Cairo, Egypt, May 13-16, 2005.
  • The Egyptian International Congress of Laparoscopic Surgery
    - Cairo January 27-29, 2006, 3rd.
    - Cairo January 17-19, 2007, 4th.

Visits:

  1. Department of urology, University hospital, Mannheim (Head: Peter Alken, MD), Faculty of clinical medicine of the University of Heidelberg, Mannheim, Germany. From April 8th to June 6th 2002, for training on Flexible ureterorenography.
  2. Department of urology, University of California/ Irvine Medical Center (Head: Ralph Clayman MD), from May 17th to 28th 2004.
Presentations:

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International Conferences:

  1. "Safety and Efficacy of Supracostal Percutaneous Nephrolithotomy in Pediatric Patients"
    Poster presentation in the 103rd American Urologic Association Conference, Orlando, Florida 2008.
  2. "A Prospective Multivariate Analysis of Factors Predicting Stone Disintegration by Extracorporeal Shock Wave Lithotripsy: The Value of High-Resolution Noncontrast Computed Tomography."
    Poster presentations in the 22nd European Association of Urology Conference, Berlin, Germany, 2007
  3. "Post-percutaneous nephrolithotomy extensive hemorrhage: A study of risk factors."
    Poster presentations in the 22nd European Association of Urology Conference, Berlin, Germany, 2007
  4. "The combination of laparoscopy and nephroscopy for treatment of stones in ectopic pelvic kidneys"
    Video presentation in the 19th Video- Urology World Congress. Singapore, 2007
  5. "Predictors of clinical significance of residual fragments after ESWL for renal stones"
    Poster presentations in the 21st European Association of Urology Conference, Paris, France, 2006.
  6. "Colonic perforation during percutaneous nephrolithotomy: Study of risk factors"
    Poster presentations in the 21st European Association of Urology Conference, Paris, France, 2006.
  7. "Percutaneous treatment of large upper tract stones after urinary diversion"
    Poster presentations in the 21st European Association of Urology Conference, Paris, France, 2006.
  8. " Temporary double J stenting: Analysis of factors responsible for morbidity and patients' discomfort"
    Poster presentation in the 23rd World Congress of Endourology, Amsterdam, Netherlands, 2005.
  9. Prospective randomized comparison of ureteroscopic endopyelotomy using Holmium: YAG Laser and Acucise endopyelotomy".
    Poster presentation in the 100th American Urologic Association Conference, San Antonio, USA, 2005.
  10. "Role of Multiphasic Helical CT in planning surgical treatment of Ureteropelvic Junction Obstruction"
    Poster presentation in the 18th European Association of Urology Conference, Madrid, Spain 2003.
  11. "Retrograde Laser Endopyelotomy for Primary Pelviureteral Junction Obstruction".
    Video presentation in the 14th Video- Urology World Congress. Cairo, Egypt, 2002.

Local and Regional Conferences:

  1. "The combination of laparoscopy and nephroscopy for treatment of stones in ectopic pelvic kidneys"
    Podium presentation in the 4rd Egyptian international congress of laparoscopic surgery, Cairo, Egypt, January, 2007.
  2. "Prospective comparison of laparoscopic and Open Pyeloplasty: A single center experience"
    Podium presentation in the 3rd Egyptian international congress of laparoscopic surgery, Cairo, Egypt, January 27-29, 2006.
  3. "A rational for prostate cancer screening in developing countries: Comparison between screening and case finding"
    Poster presentation in the Pan African Urologic Surgeon Association Conference, Cairo, 2005.
  4. "Antegrade endopyelotomy: Prognostic factors affecting late recurrence"
  5. "Retrograde ureteroscopic endopyelotomy using Holmium: YAG Laser"
    Podium presentations in the 38th Annual meeting of the Egyptian Urologic Association, Cairo, Egypt, 2003.
  6. "Laser Transfection of TCC: New Potential Method for Gene Therapy of Bladder Cancer "
    Podium presentation in the 37th annual meeting of the Egyptian Urologic Association, Luxor, Egypt, 2002.
  7. "Laser Endopyelotomy".
    Video presentation in the 36th annual conference of the Egyptian urologic association, Sharm EL-Sheikh, Egypt, 2001.
  8. "Percutaneous Nephrolithotomy for complex renal stones: Safety and Efficacy".
    Podium presentation in the 36th annual conference of the Egyptian Urologic association, Sharm EL-Sheikh, Egypt, 2001.
  9. "Prostatic adenocarcinoma associated with bladder Cancer in cystoprostatectomy specimens".
    Poster presented in the 35th Annual conference of the Egyptian Urologic association, Cairo, Egypt, 2000.
  10. "Screening of prostatic carcinoma in urologic patients at risk".
    Poster presented in the 34th Annual conference of the Egyptian Urologic Association, Aswan, Egypt 1999.
Scientific Publications:

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Papers:

  1. Conservative Treatment of Liver Injury during Percutaneous Nephrolithotomy.
    El-Nahas AR, Mansour AM, Ellaithy R, Abol-Enein H.
    J Endourol 2008; 22:1649-1652
  2. Safety and Efficacy of Supracostal Percutaneous Nephrolithotomy in Pediatric Patients
    El-Nahas AR, Shokeir AA, EL-Kenawy MR, Shoma AM, Eraky I, El-Assmy AM, Ghaly AM, El-Kappany HA. J Urol 2008; 180: 676-680.
  3. Long-Term Effects of Extracorporeal Shock Wave Lithotripsy on Renal Function: Our Experience With 156 Patients With Solitary Kidney"
    El-Assmy AM, El-Nahas AR, Hekal IA, Badran M, Youssef IF, Sheir KZ.
    J Urol 2008; 179: 2229-2232.
  4. Functional and morphological effects of postpercutaneous nephrolithotomy superselective renal angiographic embolization.
    El-Nahas AR, Shokeir AA, Mohsen T, Gad HM, El-Assmy AM, El-Diasty TA, El-Kappany H. Urology 2008; 71: 408-412.
  5. Detection of Residual Stones after Percutaneous Nephrolithotomy: Role of Non-enhanced Spiral Computerized Tomography.
    Osman Y, EL-Tabey N, Refai H, El-Nahas A, Shoma A, Eraky I, EL-Kenawy M, El-Kappany H. J Urol. 2008; 179: 198-200.
  6. Laparoscopic pyeloplasty: a prospective randomized comparison between the transperitoneal approach and retroperitoneoscopy.
    Shoma AM, El-Nahas AR, Bazeed MA. J Urol. 2007; 178: 2020-2024.
  7. Combination of laparoscopy and nephroscopy for treatment of stones in pelvic ectopic kidneys.
    El-Kappany HA, El-Nahas AR, Shoma AM, El-Tabey NA, Eraky I, EL-Kenawy MR. J Endourol. 2007, 21 (9): 1131-1135.
  8. Renal access by urologist or radiologist for percutaneous nephrolithotomy--is it still an issue?
    El-Assmy AM, Shokeir AA, Mohsen T, El-Tabey N, El-Nahas AR, Shoma AM, Eraky I, El-Kenawy MR, El-Kappany HA. J Urol. 2007; 178: 916-920.
  9. Urinary complications of migrated intrauterine contraceptive device.
    EL-Hefnawy AS, EL-Nahas AR, Osman Y. Bazeed MA.
    Int Urogynecol J. 2008 Feb;19 (2):241-245.
  10. Magnetic resonance imaging in the evaluation of pelvi-ureteric junction obstruction: an all-in-one approach.
    El-Nahas AR, Abou El-Ghar ME, Refae HF, Gad HM, El-Diasty TA.
    BJU Int. 2007 Mar; 99(3): 641-645.
  11. Impact of the degree of hydronephrosis on the efficacy of in situ extracorporeal shock-wave lithotripsy for proximal ureteral calculi.
    El-Assmy A, El-Nahas AR, Youssef RF, El-Hefnawy AS, Sheir KZ.
    Scand J Urol Nephrol. 2007;41(3):208-13.
  12. Does degree of hydronephrosis affect success of extracorporeal shock wave lithotripsy for distal ureteral stones?
    El-Assmy A, El-Nahas AR, Youssef RF, El-Hefnawy AS, Sheir KZ.
    Urology. 2007 Mar; 69(3): 431-5.
  13. Retrograde endopyelotomy: a comparison between laser and Acucise balloon cutting catheter.
    El-Nahas AR. Curr Urol Rep. 2007 Mar;8(2):122-7.
  14. Post-percutaneous nephrolithotomy extensive hemorrhage: A study of risk factors.
    El-Nahas AR, Shokeir AA, El-Assmy AM, Mohsen T, Shoma AM, Eraky I, El-Kenawy MR, El-Kappany HA. J Urol. 2007; 177: 576-579.
  15. Outcome of Percutaneous Nephrolithotomy: Effect of Body Mass Index.
    El-Assmy AM, Shokeir AA, El-Nahas AR, Shoma AM, Eraky I, El-Kenawy MR, El-Kappany HA. Eur Urol. 2007
  16. A Prospective Multivariate Analysis of Factors Predicting Stone Disintegration by Extracorporeal Shock Wave Lithotripsy: The Value of High-Resolution Noncontrast Computed Tomography.
    El-Nahas AR, El-Assmy AM, Mansour O, Sheir KZ. Eur Urol. 2007
  17. "Predictors of Clinical Significance of Residual Fragments after Extracorporeal Shockwave Lithotripsy for Renal Stones"
    El-Nahas AR, El-Assmy AM, Madbouly K, Sheir KZ. J Endourol. 2006; 20 (11): 869-873.
  18. "Is Pre-Shock Wave Lithotripsy Stenting Necessary for Ureteral Stones With Moderate or Severe Hydronephrosis?"
    El-Assmy A, El-Nahas AR, Sheir KZ. J Urol. 2006; 176: 2059-2062.
  19. "Percutaneous endopyelotomy for secondary ureteropelvic junction obstruction: Prognostic factors affecting late recurrence"
    El-Nahas AR, Shoma AM, Eraky I, El-Kenawy MR, El-Kappany HA. Scand J Urol Nephrol 2006, 40 (5): 385-390.
  20. "Extracorporeal shock-wave lithotripsy monotherapy of partial staghorn calculi".
    El-Assmy A, El-Nahas AR, Madbouly K, Abdel-Khalek M, Abo-Elghar ME, Sheir KZ. Scand J Urol Nephrol 2006; 40(4):320-325.
  21. Treatment of renal stones in children: a comparison between percutaneous nephrolithotomy and shock wave lithotripsy.
    Shokeir AA, Sheir KZ, El-Nahas AR, El-Assmy AM, Eassa W, El-Kappany HA J Urol. 2006; 176:706-710.
  22. "Self-retaining ureteral stents: Analysis of factors responsible for patient discomfort"
    El-Nahas AR, Ahmed M. El-Assmy, Ahmed M. Shoma, Ibrahim Eraky, Mahmoud R. EL-Kenawy, Hamdy A. EL-Kappany.
    J Endourol., 2006, 20 (1): 33-37.
  23. "Percutaneous treatment of large upper tract stones after urinary diversion".
    El-Nahas AR, Ibrahim Eraky, Ahmed M. EL-Assmy, Ahmed M. Shoma, Mahmoud R. EL-Kenawy, Mohamed Abdel-Latif, Ahmed Mosbah, Hassan Abol-Enein, Atallah A Shaaban, Tarek Mohsen, MD Hamdy A. ELKappany, Accepted for publication in Urology.
  24. "Colonic perforation during percutaneous nephrolithotomy: Study of risk factors"
    El-Nahas AR, Ahmed A. Shokeir, Ahmed M. El-Assmy, Ahmed M. Shoma, Ibrahim Eraky, Mahmoud R. EL-Kenawy, Hamdy A. EL-Kappany, Urology; 2006
  25. "Percutaneous endopyelotomy for secondary ureteropelvic junction obstruction: Prognostic factors affecting late recurrence"
    El-Nahas AR, Ahmed M. Shoma, Ibrahim Eraky, Mahmoud R. EL-Kenawy, Hamdy A. EL-Kappany. SJUN; 2006, 40
  26. "Predictors of success after extracorporeal shock wave lithotripsy (ESWL) for renal calculi between 20-30 mm: A multivariate analysis model".
    Ahmed El-Assmy1, El-Nahas AR, Mohamed E. Abo-Elghar, Ibrahim Eraky1, Mahmoud R. El-Kenawy, and Khaled Z. Sheir.
    TSW Urology; 2006, 1: 93-100.
  27. "Safety and outcome of rigid ureteroscopy in management of ureteral calculi in children"
    Ahmed M. El-Assmy, Ashraf T. Hafez, Ibrahim Eraky, El-Nahas AR, Hamdy A. EL-Kappany. J Endourol., 2006, 20 (4): 20-23.
  28. "Prospective randomized comparison of ureteroscopic endopyelotomy using Holmium: YAG Laser and Balloon catheter"
    El-Nahas AR, Ahmed M. Shoma, Ibrahim Eraky, Mahmoud R. EL-Kenawy, Hamdy A. EL-Kappany. J Urol., 2006, 175: 614-618.
  29. "Laparoscopic Adrenalectomy: A single center experience of 43 cases"
    Hamdy A. EL-Kappany, Ahmed M. Shoma, Nasr A EL-Tabey, El-Nahas AR and Ibrahim Eraky. J Endourol., 2005, 19 (10): 956-959.
  30. "Extracoropreal shock wave lithotripsy of upper urinary tract calculi in patients with cystectomy and urinary diversion"
    Ahmed El-Assmy, El-Nahas AR, Tarek Mohsen, Ibrahim Eraky, Mahmoud R. El-kenawy, Attalah A. Shaban, Khaled Z. Sheir, MD. Accepted for publication in Urology; 2005.
  31. "Laparoscopic excision of prostatic hydatid cyst: Case report and review of literature".
    EL-Kappany HA, El-Nahas AR, EL-Nhahas HA. J Endourol, 2005, 19: 290-294.
  32. "Role of multiphasic helical computed tomography in planning surgical treatment of pelvi-ureteric junction obstruction".
    El-Nahas AR, Abo EL-Ghar M, Shoma AM, Eraky I, EL-Kenawy MR and EL-Kappany H. BJU Int. 2004; 94: 582-587.
  33. "Percutaneous nephrolithotomy in treatment of large stone within horseshoe kidney".
    Shokeir AA, El-Nahas AR, Shoma AM, Eraky I, EL-Kenawy MR, Mokhtar A and EL-Kappany H. Urology 2004; 64: 426-429.
  34. "Bilharzial pyelitis: A rare cause of secondary ureteropelvic junction obstruction".
    El-Nahas AR, Shoma AM and EL-Baz M. J Urol 2003; 170: 1946-1947.
  35. "Flexible ureterorenoscopy: Indications and limitations"
    El-Nahas AR, Michel MS and EL-Kappany HA. AJU 2003; 3: 22-29.
  36. "Percutaneous nephrolithotomy for complex renal stones: Safety and efficacy".
    Eraky I, El-Nahas AR, Shoma A, EL-Kenawy M, and EL-Kappany H. AJU 2003; 3: 22-29.
  37. "A rational for prostate cancer detection in a developing country: Comparison of screening and case finding".
    El-Nahas AR, Abol-Enein H, Abel-Khalek M, EL-Assmy A, AL-Kohlany K, EL-Baz M and Ibraheim EI. African Journal of Urology 2003; 9: 3-7.
  38. "Case report: An abnormal site of JJ migration".
    El-Nahas AR, and Shaaban AA. BJU Int 2002; 90 (1cr), 139.
  39. "Prostatic adenocarcinoma in cystoprostatectomy specimens removed for bladder tumors in bilharzial patients".
    El-Nahas AR, Abol-Enein H, El-Baz MA and Ibraheim EI.
    African Journal of Urology 2002; 8: 83-86.
  40. "Tumor characteristics of prostatic carcinoma at Mansoura Urology and Nephrology Center, Egypt".
    El-Nahas AR, Abol-Enein H, El-Baz MA and Ibraheim EI.
    Egyptian Journal of Urology 2001; 8:24-28.
Honors & Prizes:

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  • Winner of the Doctor's 17th Anniversary Medal, Egyptian Medical Syndicate, 1993.
  • Winner of Professor Fakhry Prize for special surgery in 2005.
  • Winner of the best Poster presentation in PCNL session in XXIst European Association of Urology Conference (Paris 5-8 April 2006).
  • Winner of the best Poster presentation in ESWL session in XXIst European Association of Urology Conference (Paris 5-8 April 2006).

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  • Egyptian National Encourage Prize for Medical Science in 2007.
Thesis Supervision:

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  1. "Sequelae of Extracorporeal Shockwaves Lithotripsy in Pediatric Patients"
    An Essay for Master degree in urology, by Bassam Abelhamid Awad.
  2. "Laparoscopy in Pediatric Urology: The outcome and Morbidity"
    An Essay for Master degree in urology, by Reda Hendak Soliman
  3. "Management of stones associated with congenital renal anomalies"
    An Essay for Master degree in urology, by Anees Mahmoud Bazeed.
Reviewer for International Journals (Since 2005 ):

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  1. European Urology: 19 manuscripts.
  2. Journal of Endourology: 5 manuscripts.
  3. Urology (Golden): 4 manuscripts.
  4. Journal of Urology: 2 manuscripts.
  5. International Brazilian Journal of Urology: 1 manuscript.
  6. British Medical Central (Urology): 1 manuscript.
  7. Natural Clinical Practice (Urology): 1 manuscript.
  8. McMaster Online Rating of Evidence (MORE): 22 articles.
References:

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From Egypt

  • Mohamed A. Ghoneim, MD, MD (Hon.)
    Emeritus Professor of Urology, Urology & Nephrology Center,
    Mansoura University, Mansoura - Egypt
  • Hamdy A. EL-Kappany, MD,
    Professor and head of urology department,
    Urology & Nephrology Center,
    Mansoura University, Mansoura - Egypt
  • Prof. Hassan Abol-Enein, MD, PhD
    Professor of Urology,
    Director of Urology & Nephrology Center,
    Mansoura University, Mansoura - Egypt

Outside Egypt

  • Peter Alken, MD
    Professor and head of department of urology,
    University hospital, Mannheim,
    Faculty of clinical medicine of the University of Heidelberg, Mannheim, Germany.
  • Ralph Claymann
    Professor and head of department of urology,
    University of California, Irvine (UCI),
    USA.
  • Prof. Mourice Stephan Michil, MD
    Professor and head of department of urology,
    University hospital, Mannheim,
    Faculty of clinical medicine of the University of Heidelberg, Mannheim, Germany.

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