Feasibility, surgical time and complications of different surgical techniques for prepubertal gonadectomy (PPG; 8-12 weeks of age) in cats were studied and compared to gonadectomy at traditional age (TAG; 6-8 months of age). Kittens were randomly assigned to PPG or TAG. Ovarian pedicle haemostasis for PPG was achieved by ligatures (n=47), vascular clips (n=50), bipolar electrocoagulation (n=50), or pedicle tie (n=50); for TAG (n=34) ligatures were used. In male cats, PPG consisted of closed castration by spermatic cord knot (n=92) or ligature (n=91) while TAG (n=34) was an open castration by spermatic cord knot. A linear (surgical time) and a logistic regression (complications) model were designed. Significance was set at 0.05. For female PPG, clips and coagulation were the fastest procedures; placement of ligatures was most time-consuming. In male PPG, knot placement was significantly faster than ligation. In both sexes, very few intraoperative or wound complications were observed, irrespective of the surgical technique used. Surgical times in females (ligatures) as well as in males (knot) were significantly shorter for PPG than for TAG. PPG was as safe as TAG, yet took less time to perform and did not result in a greater rate of postoperative complications.
The canine omentum has many valuable properties but is still an underestimated organ. It contributes in many ways to the protection of the peritoneal cavity through its versatility on immunological level, but also through its role during angiogenesis, absorption, adhesion and fat storage. Despite a wide range of applications, the basic structure of the omentum is not well documented. This study provides an insight in the microscopic structure of the canine omentum through both light microscopic and electron microscopic investigations. Two regions could be distinguished in the canine omentum: translucent and adipose-rich regions. The translucent regions were composed of two different layers: a continuous flattened mesothelium on top of a submesothelial connective tissue matrix. The adipose-rich regions consisted of a substantial layer of adipocytes on which a flattened continuous mesothelium was present. Between those two layers, a few strands of collagen fibres could be detected. Large aggregates of immune cells, the so-called milky spots, were not observed in the omentum of healthy dogs. Only a limited number of leucocytes, macrophages and neutrophils were found, scattered throughout the connective tissue in the translucent regions. At the level of the adipose-rich regions, the immunological population was virtually non-existent.
When lengthening the omentum is necessary to reach extra-abdominal structures, the omental pedicle flap based on the splenic artery appears to preserve the omental vascular supply. These observations warrant further clinical trials to evaluate this new omtental flap technique in vivo.
Een geïnfecteerde paraprostaatcyste met oorsprong in het prostaatparenchym werd gediagnosticeerd bij een zeven jaar oude, mannelijke, intacte Amerikaanse staffordshireterriër die aangeboden werd met dysurie. De diagnose werd gesteld aan de hand van de anamnese, het lichamelijk en echografisch onderzoek, het bacteriologisch onderzoek, het uitgebreid histopathologisch onderzoek en een DNA-test. De behandeling bestond uit het chirurgisch verwijderen van een groot deel van de cyste, omentalisatie van het restant gecombineerd met castratie en antibioticumtherapie. Immunohistochemische kleuringen toonden aan dat de cyste een urotheliale aflijning had. Een DNAtest sloot het persisterende-gang-van-Müller-syndroom (PMDS) uit. De cyste had een open verbinding met de urethra en ontstond vermoedelijk uit een embryonaal restant ter hoogte van de prostaat. De hond herstelde vlot van de ingreep maar de dysurie en incontinentie persisteerden. Bij de controle vier maanden postoperatief werd echografisch een nieuwe paraprostaatcyste aangetoond. Uit de echobegeleide punctie bleek de cyste geïnfecteerde urine te bevatten.
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