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The possibility to decrease the size of enlarged prostate glands in dogs by cryodestruction using a liquid nitrogen was evaluated. The operations were done on 14 sick dogs with enlarged prostate glands. Each lobe of the prostate gland was thawed from the external part using a flat cryoapplicator. The manner of thawing (time, number of foci, range) differed due to the size of the gland and the general state of health of the dogs. The results varied. It was found that the prognosis is worse when a greatly enlarged prostate gland is thawed than in the case of a mildly enlarged gland. In 3 dogs the prostate gland decreased by about 50%, in 2 dogs the gland decreased 4 times, and in 3 dogs after 12 months only a small swell on the urethra as a residue of the prostate was noted. In 1 dog one thawed lobe was diminished about three times. In 1 dog the size of the prostate did not diminish because inside the thawed lobes were formed holes containing sero-purulent exudate. Four dogs (with significantly enlarged prostates) died after the operation or were killed by their owners because of a generally bad state of health or the destruction of the urethra during operation leading to peritonitis.
The aim of the study was to assess the prepubic minilaparotomy approach in the surgical treatment of prostatic disorders in dogs. The technique of a limited approach to the prostate was developed on the fresh cadavers of 14 intact adult male dogs, diversified in regard to size and body weight. The abdominal cavity was opened in midline, from the right-sided prepubic parapenile incision. The cut was limited to 7 cm. Afterwards, it was expanded by self-retaining retractors: Gelpi, Weislander, Finnochetto Baby, and Adson. Finnochetto Baby and Gelpi retractors used in pairs enabled an adequate exposition of the prostate in small dogs. The Finnochetto Baby retractor enabled an adequate exposition of the prostate in medium dogs and the Adson retractor - in large and giant dogs. The Weislander and Gelpi retractors used individually did not allow for sufficient access to the prostate in any group of the cadavers. Prepubic minilaparotomy can be a useful surgical approach in the treatment of prostate disorders in dogs. It can be used especially for minor surgical procedures, e.g. sampling of large tissue specimens for histopathological examination, partial prostatectomy, or treatment of intraparenchymal cavitary lesions.
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