Fig 1.
Post laparoscopic investigation incision site.
View of incision site on closing following laparoscopic insertion, yellow stain marks represent iodine solution as fur wetted to aid ultrasound examination.
Table 1.
Beaver category with screening method employed.
Fig 2.
Ultrasound image of normal abdominal organs in an anaesthetised beaver.
Fig 3.
Laparoscopic image of normal abdominal organs in an anaesthetised beaver.
Fig 4.
Laparoscopic view of E. multilocularis cyst.
Laparoscopic view of E. multilocularis infection in the liver of a beaver cadaver.
Fig 5.
Laparoscopic view of a Taenia martis cyst.
Laparoscopic view of a small Taenia martis cyst in a beaver cadaver liver, with laparoscopic palpation probe with 10mm graduations).
Fig 6.
Sonogram of E. multilocularis cyst.
Ultrasound image of E. multilocularis cyst in the liver of the same beaver cadaver as Fig 4.
Fig 7.
Histological presentation of E. multilocularis.
Histological presentation of a 25mm wide hepatic cyst, consistent with Echinococcus multilocularis in PCR analysis. Section A: This cyst is encapsulated by a band of fibrous tissue, and features a mostly empty lumen. Section B In some areas, the lumen contains hypereosinophilic, hyaline membranes, and mild mineralization of the inner aspect of the capsule. Protoscolices were not noted in any of the sections examined.
Fig 8.
Histological presentation Taenia martis.
Histological presentation of 3mm wide hepatic cyst, consistent with Taenia martis in PCR analysis. Section A: The cyst is lined by a band of thick fibrous tissue, and contains an intraluminal, 2mm wide metazoan organism. Section B (inset of Section A): This organism does not possess a coelomic cavity and features a protoscolex (arrow), and three suckers (arrowheads). H&E stain.