ČESKÁ UROLOGIE / CZECH UROLOGY – 2 / 2020

131 ORIGINÁLNÍ PRÁCE Ces Urol 2020; 24(2): 126–131 2. Kolon TF, Herndon CD, Baker LA, et al. Evaluation and treatment of cryptorchidism: AUA guideline. The Journal of urology 2014; 192(2): 337–345. 3. EAU Guidelines for Paediatric Urology. http://uroweb.org/guideline/paediatric ‑urology/. 4. Šmakal O, Zapletalová J. Polohové anomálie varlat – diagnostika a léčba. Urol. praxi 2002; 3(2): 49–51. 5. Hutson JM, Southwell BR, Li R, et al. The Regulation of Testicular Descent and the Effects of Cryptor‑ chidism. Endocr Rev 2013; 34(5): 725–752. doi: 10.1210/er. 2012–1089. 6. Pettersson A, Richiardi L, Nordenskjold A, Kaijser M, Akre O. Age at Surgery for Undescended Testis and Risk of Testicular Cancer. N Engl J Med 2007; 356(18): 1835–1841. 7. Tasian GE, Copp HL. Diagnostic performance of ultrasound in nonpalpable cryptorchidism: a systematic review and meta‑analysis. Pediatrics 2011; 127(1): 119–128. 8. Elder JS. Ultrasonography is unnecessary in evaluating boys with a nonpalpable testis. Pediatrics 2002; 110: 748–751. 9. Adesanya OA, Ademuyiwa AO, Evbuomwan O, Adeyomoye AA, Bode CO. Preoperative localization of undescended testes in children: Comparison of clinical examination and ultrasonography. J Pediatr Urol 2014; 10(2): 237–240. 10. Nijs SM, Eijsbouts SW, Madern GC, et al. Nonpalpable testes: is there a relationship between ultraso‑ nographic and operative findings? Pediatr Radiol 2007; 37: 374–379. 11. Berger C, Haid B, Becker T, et al. Nonpalpable testes: Ultrasound and contralateral testicular hypertrophy predict the surgical access, avoiding unnecessary laparoscopy. J Pediatr Urol 2017; 24: 3056–63. 12. Bae KH, Park JS, Jung HJ, Shin HS. Inguinal approach for the management of unilateral non‑palpable testis: is diagnostic laparoscopy necessary? Journal of pediatric urology 2014; 10(2): 233–236. 13. Budianto IR, Tan HL, Kinoshita Y, et al. Role of laparoscopy and ultrasound in the management of „impalpable testis“ in children. Asian journal of surgery 2014; 37(4): 200–204. 14. Snodgrass W, Chen K, Harrison C. Initial scrotal incision for unilateral nonpalpable testis. J Urol 2004; 172: 1742e5. 15. Shepard CL, Kraft KH. The Nonpalpable Testis: A Narrative Review. J Urol 2017; 198(6): 1410–1417. 16. Akihiro I, Kikuchi K, Ougushi K, et al. Surgical exploration for impalpable testis: Which should be first, inguinal exploration or laparoscopic abdominal exploration. Journal of Pediatric Surgery 2018; 53(9): 1766–1769. 17. Drlík M, Kočvara R. Nehmatné varle u dítěte: začít diagnostickou laparoskopií nebo otevřenou revizí třísla? Ces Urol 2011; 15(2): 101–107.