Magnetresonanztomographie und Laparoskopie zur Diagnose und Behandlung eines Ovarrest-Syndroms bei einer Hündin

Krauss, Z.; Krauß, Martin

doi:10.15654/tpk-140461

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…The high success rate for correctly identifying ovarian remnant tissue by ultrasound in this study can be explained by the fact that all patients were showing signs of estrus at the time of presentation and that the ultrasound was performed by a board-certified internist with more than 15 years of ultrasound experience. In the unlikely event that an experienced ultrasonographer is unable to identify ovarian remnant tissue, magnetic resonance tomography may be considered as an additional diagnostic tool (12). A new hormone assay is now available, the anti-Müllerian hormone assay, which seems to be of high specificity and sensitivity for the diagnosis of ORS.…”

Section: Discussionmentioning

confidence: 99%

Laparoscopy for the treatment of ovarian remnant syndrome in four dogs and two cats

Brückner¹

2016

Tierarztl Prax Ausg K

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Overall, in the hands of an experienced laparoscopic surgeon, laparoscopic removal of ovarian remnants appears to be a safe procedure in dogs and cats. In addition, laparoscopy offers the advantages of excellent visualization and a reduced morbidity for the patient. Careful case selection and complete pre-operative workup to rule out co-morbidities or underlying neoplasia are important. As with any laparoscopy the surgeon should always be prepared to convert to an open laparotomy if necessary.

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Section: Discussionmentioning

confidence: 99%

Laparoscopy for the treatment of ovarian remnant syndrome in four dogs and two cats

Brückner¹

2016

Tierarztl Prax Ausg K

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“…Die CT bietet den Vorteil, dass mit einem Ganzkörperscan in kurzer Narkosedauer auch ektopes Hodengewebe oder intrapelvine Hoden eher erfasst werden können. CT und MRT wurden für die Diagnosestellung des Ovarian-Remnant-Syndroms und die Identifizierung eines Ovarrests bei der Hündin [14] sowie für die Darstellung intraabdominal gelegener neoplastisch transformierter Hoden [32] eingesetzt. Da ein kryptorchider Hoden, solange keine neoplastische Veränderung oder Torsion vorliegt, meist deutlich atrophiert und somit sehr klein ist, lässt er sich nicht in jedem Fall mit bildgebenden Verfahren darstellen.…”

Section: Weiterer Verlaufunclassified

Monorchismus bei einem Kater

Backhaus

Krauß

2019

Tierarztl Prax Ausg K

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ZusammenfassungBei einem 9 Monate alten Kater, der zur Kastration in der Klinik vorgestellt wurde, war nur der rechte Hoden im Skrotum palpierbar. Der Kater stammte aus einer Inzuchtpaarung. Es bestand zunächst der Verdacht eines Kryptorchismus, doch konnte durch weiterführende Untersuchungen (Ultraschall, diagnostische Laparotomie) kein kryptorcher linker Hoden identifiziert werden. Die histopathologische Untersuchung des entfernten rechten Hodens ergab ein unauffälliges Organ mit Spermatogenese. Bei den im Rahmen der Laparotomie entnommenen Gewebeproben aus dem subkutanen Gewebe des Inguinalbereichs zeigten sich am proximalen Ende des Vas deferens nur Nebenhodenanteile mit angrenzendem Fettgewebe. Klinisch-morphologische Kontrollen des Phänotyps unter besonderer Betrachtung der primären Geschlechtsmerkmale sowie die Befunde eines hCG-Stimulationstests 7 Monate nach Kastration des Katers festigten die Diagnose eines unilateralen Monorchismus. Ursache eines Monorchismus kann eine unilaterale testikuläre Agenesie oder eine Atrophie nach vaskulärem Insult sein. Dieser Fall zeigt, dass dem Praktiker auch bei Routineeingriffen wie einer Katerkastration seltene Anomalien wie ein Monorchismus begegnen können und dieser diagnostisch zuverlässig gegenüber einem Kryptorchismus abgesichert werden muss.

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“…In women, laparoscopic treatment of ORS is generally successful [ 12 , 26 ], has a low recurrence rate (up to 7%) [ 27 – 29 ], and is associated with decreased blood loss, a shorter hospital stay, and fewer postoperative complications compared to celiotomy [ 30 ]. Only a few case reports and three small retrospective case series exist of laparoscopic surgery for ORS in dogs and cats [ 15 , 31 – 34 ]. Confirmation of full excision of ovarian remnant tissue was often made only by absence of clinical signs.…”

Section: Introductionmentioning

confidence: 99%

A laparoscopic approach for removal of ovarian remnant tissue in 32 dogs

et al. 2018

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BackgroundSurgical treatment of ovarian remnant syndrome (ORS) in dogs usually necessitates large celiotomies and considerable manipulation of organs because of the relatively deep position of ovarian remnant tissue, large patient size, and often encountered adhesions. In women, laparoscopic treatment of ORS is successful and has significant advantages over laparotomy. Since laparoscopic ovariectomy has significant advantages over open ovariectomy in dogs, including reduced surgical stress and postoperative pain and shorter convalescence period, the rationale for a laparoscopic approach of canine ORS is evident. Feasibility and efficacy of a laparoscopic approach for treatment of ORS in dogs was prospectively evaluated using a standardized protocol for diagnosis, treatment, and follow-up. Treatment success was evaluated by histology of removed tissues, postoperative hormone testing, and long-term clinical follow-up.ResultsThirty-two client-owned predominantly medium and large breed dogs diagnosed with ORS underwent abdominal ultrasound for ovarian remnant localization prior to laparoscopic surgery for removal of ovarian remnants. Tissue dissection and excision was performed using a vessel sealing forceps. Laparoscopy subjectively enabled detailed visibility and facilitated detection and removal of suspected ovarian tissue in all cases. Histology confirmed ovarian origin of removed tissue in all dogs. Additionally, a GnRH stimulation test was performed in fourteen dogs after a median follow-up of 10.5 months, which verified absence of residual functional ovarian remnant tissue in all dogs. Median surgery duration was 97.5 min and mean total convalescence duration, subjectively scored by owners, was 1.5 ± 0.7 days. No major complications occurred. Adhesions were observed in 79% of the dogs, complicated the surgical approach, and significantly affected surgery duration (85 versus 109 min; p = 0.03). Minor hemorrhage occurred in 12% and significantly increased surgery duration (95.5 versus 128 min; p = 0.02). Trendelenburg position and lateral tilting of the patient were essential for proper access to ovarian remnants. GnRH stimulation test results and/or absence of clinical signs indicative of ORS after a median follow-up period of 22.5 months confirmed treatment efficacy in all dogs.ConclusionLaparoscopic surgery for ORS in dogs is effective with minimal complications and short convalescence and can successfully replace the conventional, more invasive open surgical procedure.Electronic supplementary materialThe online version of this article (10.1186/s12917-018-1658-y) contains supplementary material, which is available to authorized users.

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Magnetresonanztomographie und Laparoskopie zur Diagnose und Behandlung eines Ovarrest-Syndroms bei einer Hündin

Cited by 5 publications

References 19 publications

Laparoscopy for the treatment of ovarian remnant syndrome in four dogs and two cats

Laparoscopy for the treatment of ovarian remnant syndrome in four dogs and two cats

Monorchismus bei einem Kater

A laparoscopic approach for removal of ovarian remnant tissue in 32 dogs

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