Lymphomatosis as a Cause of Abdominal Pain and Distension in Two Adult Horses.

Two equine patients presented separately with severe abdominal distention, colic, lethargy, and decreased appetite. An ante-mortem diagnosis of lymphoma was reached in each case based on peritoneal fluid cytology. Due to a poor prognosis, the horses were humanely euthanized.

infection in a red fox on Prince Edward Island, Canada.

Objective: Molecular identification of small cestodes, morphologically consistent with , recovered at necropsy from the gastrointestinal tract contents of a red fox, was accomplished by PCR using published species-specific primers and methods.

Animal: Red fox .

Procedure: Small cestodes recovered from intestinal contents of a red fox trapped on Prince Edward Island in December 2020 (frozen at -20°C before being processed for parasite recovery in June 2021) were morphologically identified.

First report of (French heartworm) in red foxes ( on Prince Edward Island.

Objective: To identify first-stage nematode larvae (L1) recovered from a red fox scat sample and adult female worms recovered from 2 red fox lungs at necropsy, using published molecular methods to confirm a morphological diagnosis of (French heartworm).

Animal: Red fox .

Procedure: Nematode larvae recovered from a Baermann examination survey of wild canid scats ( = 101) conducted from January 2017 to August 2020, were identified by size and morphology and subjected to PCR and DNA sequencing of the small subunit (SSU) rRNA gene, the large subunit (LSU) rRNA gene, or the second internal transcribed spacer (ITS2).

Cutaneous Chromatophoromas in Four Species of Australian Elapid Snake.

This report documents the clinicopathological features of cutaneous chromatophoromas in four wild-caught, captive Australian elapid snakes: a strap-snouted brown snake (Pseudonaja aspidoryncha), a tiger snake (Notechis scutatus), an Eastern brown snake (Pseudonaja textilis) and a Mengden's brown snake (Pseudonaja mengdeni). All tumours were subclassified as melanophoromas, with three assessed as malignant on the basis of invasive growth or presence of intracoelomic metastases. The chromatophoromas were single or multiple, black or orange pigmented, cutaneous, sometimes ulcerated, plaques or nodules.

In vitro cultivation of Hematodinium sp. isolated from Atlantic snow crab, Chionoecetes opilio: partial characterization of late developmental stages.

Hematodinium is a parasitic dinoflagellate of numerous crustacean species, including the economically important Atlantic snow crab, Chionoecetes opilio. The parasite was cultured in vitro in modified Nephrops medium at 0 °C and a partial characterization of the life stages was accomplished using light and transmission electron microscopy (TEM). In haemolymph from heavily infected snow crabs two life stages were detected; amoeboid trophonts and sporonts.

Ovarian hemangiosarcoma in an orange-winged Amazon parrot (Amazona amazonica).

A 25-year-old intact female orange-winged Amazon parrot (Amazona amazonica) presented for a 2-week history of straining to defecate, lethargy, open-beak breathing, decreased vocalization, and ruffled feathers. On physical examination, the parrot had a heart murmur, increased air sac and lung sounds, open-beak breathing, increased respiratory rate and effort, and coelomic distension. An ultrasound revealed intracoelomic fluid, and hemorrhagic fluid was aspirated from the coelom.

Clinical, histologic, and immunohistochemical characterization of wart-like lesions on the paw pads of dogs: 24 cases (2000-2007).

OBJECTIVE- To determine clinical, histologic, and immunohistochemical findings for dogs with wart-like lesions involving the paw pads. DESIGN- Retrospective case series. ANIMALS- 24 dogs (18 Greyhounds and 6 dogs of other breeds).

B-cell lymphoma with Mott cell differentiation in two young adult dogs.

Two young adult dogs with gastrointestinal signs were each found to have an intra-abdominal mass based on physical examination and diagnostic imaging. On exploratory laparotomy, small intestinal masses and mesenteric lymphadenopathy were found in both dogs; a liver mass was also found in dog 1. Cytologic and histologic examination of intestinal and liver masses and mesenteric lymph nodes revealed 2 distinct lymphoid cell populations: lymphoblasts and atypical Mott cells.

Cholangiohepatitis and pancreatitis secondary to severe gastroduodenal ulceration in a foal.

A 2-month-old foal was presented with clinical signs of colic. Gastroduodenal ulceration was suspected. A poor response to medical treatment and signs of gastroduodenal obstruction led to celiotomy and an attempted bypass procedure.

Evaluation of Rainbow Trout as a Model for use in Studies on Pathogenesis of the Branchial Microsporidian Loma salmonae.

Loma salmonae is an economically important gill microsporidian pathogen of pen-reared chinook and coho salmon. Chinook and coho salmon are generally poorly suited for use in laboratory studies because of their high mortality rates when infected with L. salmonae and their high-level of susceptibility to other infectious diseases.