{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T23:07:36Z","timestamp":1780441656005,"version":"3.54.1"},"reference-count":11,"publisher":"Georg Thieme Verlag KG","issue":"03","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Aktuelle Urol"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:title>Zusammenfassung<\/jats:title>\n                  <jats:p>Einleitung Der Cobb\u2019s Ring, auch Moormann-Ring genannt, ist eine sehr seltene membran\u00f6se Striktur der bulb\u00e4ren Urethra und weist, im Gegensatz zu der hinteren Harnr\u00f6hrenklappe, keine direkte Verbindung zum Verumontanum auf. Das klinische Erscheinungsbild kann stark variieren. Das gleichzeitige Vorhandensein einer hinteren Harnr\u00f6hrenklappe mit Cobb\u2019s Ring ist noch seltener. Wir berichten unseres Wissens \u00fcber den dritten Fall in der Literatur eines Kindes mit gleichzeitiger hinterer Harnr\u00f6hrenklappe und Cobb\u2019s Ring.<\/jats:p>\n                  <jats:p>Fallvorstellung Wir stellen einen 3-j\u00e4hrigen Jungen mit wiederholten Episoden eines akuten Harnverhalts mit Restharnmengen bis zu 800 ml vor. W\u00e4hrend einer ausw\u00e4rts durchgef\u00fchrten Urethrozystoskopie, wurde nur ein spastisch wirkender Blasenhals beschrieben. Die neurop\u00e4diatrische Untersuchung wie auch die Magnetresonanz des Sch\u00e4dels und der Wirbels\u00e4ule waren negativ. Nach Legen eines suprapubischen Katheters wurde die Urethozystoskopie wiederholt und nun eine membran\u00f6se Striktur distal des \u00e4u\u00dferen Schlie\u00dfmuskels \u2013 ein sogenannter Cobb\u2019s Ring \u2013 diagnostiziert und gleichzeitig inzidiert. Nach dem Eingriff konnte der Junge mit einem Restharn von 40\u201350 ml urinieren. Da jedoch 2 Wochen nach der Inzision, das Restharnvolumen wieder zunahm, erfolgte eine erneute Urethrozystoskopie, bei der, neben dem offen erscheinenden Cobb\u2019s Ring, nun auch eine hintere Harnr\u00f6hrenklappe zu erkennen war. Sie wurde endoskopisch mit dem Hakenmesser kalt inzidiert.<\/jats:p>\n                  <jats:p>Schlussfolgerung Da das klinische Erscheinungsbild und der Grad der Obstruktion stark variieren k\u00f6nnen, ist die Diagnose des Cobb\u2019s Ringes schwer zu stellen \u2013 es sei denn, der Urologe kennt diese seltene angeborene Anomalie der Harnr\u00f6hre, und denkt auch daran.<\/jats:p>","DOI":"10.1055\/a-2466-6115","type":"journal-article","created":{"date-parts":[[2024,12,5]],"date-time":"2024-12-05T20:01:13Z","timestamp":1733428873000},"page":"301-305","source":"Crossref","is-referenced-by-count":0,"title":["Cobb\u2019s Ring \u2026 wer suchet, der findet!"],"prefix":"10.1055","volume":"57","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5538-9058","authenticated-orcid":false,"given":"Evi","family":"Comploj","sequence":"additional","affiliation":[{"name":"Hospital of Bolzano (SABES-ASDAA), Teaching Hospital of Paracelsus Medical University (PMU), Bozen, Italy","place":["Bozen"],"department":["Abteilung f\u00fcr Urologie und Kinderurologie"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Ladurner","sequence":"additional","affiliation":[{"name":"Hospital of Bolzano (SABES-ASDAA), Teaching Hospital of Paracelsus Medical University (PMU), Bozen, Italy","place":["Bozen"],"department":["Abteilung f\u00fcr Urologie und Kinderurologie"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Armin","family":"Pycha","sequence":"additional","affiliation":[{"name":"Hospital of Bolzano (SABES-ASDAA), Teaching Hospital of Paracelsus Medical University (PMU), Bozen, Italy","place":["Bozen"],"department":["Abteilung f\u00fcr Urologie und Kinderurologie"]},{"name":"Sigmund Freud Private University, Austria","place":["Vienna"],"department":["Medical School"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2024,12,5]]},"reference":[{"key":"ref1","first-page":"261","volume-title":"Harnr\u00f6hrenklappen und Strikturen","author":"R R\u00f6sch","year":"2023"},{"key":"ref3","doi-asserted-by":"publisher","first-page":"953","DOI":"10.1111\/j.1464-410X.2006.06420","article-title":"Congenital urethral obstruction: the video-endoscopic perspective","volume":"98","author":"YC Lu","year":"2006","journal-title":"BJU Int"},{"key":"ref4","first-page":"265","article-title":"Congenital obstruction of the posterior urethra. J Urol 1919; 3: 289\u2013365","volume":"167","author":"HH Young","year":"2002","journal-title":"J Urol"},{"key":"ref5","doi-asserted-by":"publisher","first-page":"100848","DOI":"10.1016\/j.eucr.2019.100848","article-title":"Double trouble: A rare cause of posterior urethral valve and Cobb\u2019s collar","volume":"24","author":"L Smith","year":"2019","journal-title":"Urol Case Rep"},{"key":"ref6","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1007\/BF02353001","article-title":"Congenital obstructing posterior urethral membranes (COPUM): Further evidence for a common morphological diagnosis","volume":"8","author":"PA Dewan","year":"1993","journal-title":"Pediatr Surg Int"},{"key":"ref7","doi-asserted-by":"publisher","first-page":"629","DOI":"10.1016\/S0022-5347(17)62761-7","article-title":"Congenital stricture of the proximal urethral bulb","volume":"99","author":"BG Cobb","year":"1968","journal-title":"J Urol"},{"key":"ref8","first-page":"157","article-title":"Congenital bulbar urethral stenosis as a cause of desease of the urogenital junction","volume":"11","author":"JG Moormann","year":"1972","journal-title":"Urologe A"},{"key":"ref9","first-page":"125","article-title":"Congenital urethral anomalies in boys. Part II","volume":"2","author":"A Kajbafzadeh","year":"2005","journal-title":"Urol J Summer"},{"key":"ref10","first-page":"196a","article-title":"Urethral obstruction from Cobb\u2019s collar in association with VACTERL","volume":"59","author":"S Irusen","year":"2021","journal-title":"Afr J Surg"},{"key":"ref11","doi-asserted-by":"publisher","first-page":"144","DOI":"10.1159\/000067986","article-title":"Impact of congenital narrowing of the bulbar urethra (Cobb\u2019s collar) and its transurethral incision in children","volume":"36","author":"K Nonomura","year":"1999","journal-title":"Eur Urol"},{"key":"ref12","doi-asserted-by":"publisher","first-page":"75","DOI":"10.1016\/j.eucr.2018.03.017","article-title":"Cobb\u2019s\u00a0collar\u00a0and chronic renal failure","volume":"18","author":"CS Martins","year":"2018","journal-title":"Urol Case Rep"}],"container-title":["Aktuelle Urologie"],"original-title":[],"language":"de","link":[{"URL":"http:\/\/www.thieme-connect.de\/products\/ejournals\/pdf\/10.1055\/a-2466-6115.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T22:33:29Z","timestamp":1780439609000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.thieme-connect.de\/DOI\/DOI?10.1055\/a-2466-6115"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,12,5]]},"references-count":11,"journal-issue":{"issue":"03","published-online":{"date-parts":[[2026,6,2]]},"published-print":{"date-parts":[[2026,6]]}},"URL":"https:\/\/doi.org\/10.1055\/a-2466-6115","archive":["Portico","CLOCKSS"],"relation":{},"ISSN":["0001-7868","1438-8820"],"issn-type":[{"value":"0001-7868","type":"print"},{"value":"1438-8820","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,12,5]]}}}