Geraldine Briony Hunt

University of California, Davis | UCD · Department of Surgical and Radiological Sciences (VM)

Objective: To report outcome and complications after percutaneous transvenous coil embolization (PTCE) and evaluate the clinical, laboratory, and imaging changes in dogs with intrahepatic portosystemic shunts (IHPSS) pre-PTCE and post-PTCE. Study design: Prospective clinical trial. Animals: Twenty-five dogs (15 dogs in imaging subgroup) with I...

OBJECTIVE To characterize clinical findings, surgical procedures, complications, and outcomes in dogs undergoing extirpation of masses from the cranial mediastinum via video-assisted thoracic surgery (VATS) and establish preliminary guidelines for case selection when considering VATS for thymectomy in dogs. DESIGN Retrospective case series. ANIMALS...

Sentinel lymph node mapping can help to direct surgical oncologic staging and metastatic disease detection in patients with complex lymphatic pathways. We hypothesized that indirect computed tomographic lymphography (ICTL) with a water-soluble iodinated contrast agent would successfully map lymphatic pathways of the iliosacral lymphatic center in d...

OBJECTIVE To evaluate the outcome for cats with benign ureteral obstructions treated by means of ureteral stenting and to compare the outcome for these cats with outcome for a historical cohort of cats treated by means of ureterotomy only. DESIGN Prospective study with historical cohort. ANIMALS 62 client-owned cats with benign ureteral obstruction...

Objective: To report the use of low-pressure carbon dioxide insufflation during video-assisted thoracoscopic surgery for resection of a noninvasive thymoma in a cat with secondary myasthenia gravis. Study design: Clinical case report. Animal: Client-owned cat. Methods: An 11-year-old castrated male domestic shorthair cat was examined for gen...

Objective: To describe indications for, and outcomes after, pneumonectomy in dogs and cats, including assessment of immediate postoperative respiratory function in comparison to dogs undergoing single lung lobectomy. Study design: Retrospective case series. Animals: Dogs (n=16) and cats (n=7) with naturally occurring pulmonary disease. Method...

A ten-year-old female koi (Cyprinus carpio) was presented with bilateral, asymmetric, sessile masses of the periventiductal tissue. The owner had first observed the masses for approximately one year prior to seeking a veterinary evaluation of the fish. Over the past year the sessile masses continued to grow and develop in size. An incisional biopsy...

The objective of this study was to evaluate the influence of ameroid constrictor (AC) composition as well as glucose concentration in the surrounding fluid on the rate and completeness of AC closure. In a pilot study, four ACs (two metal, two plastic) were incubated in a solution containing 100 mg/dL glucose, and in a follow-up study, two additiona...

Thoracoscopy is commonly used in the diagnosis and treatment of human disease and is being used more regularly in veterinary cases. The use of thoracoscopy to perform mediastinal mass resection is a viable treatment option that should be considered when an appropriate case has been identified. Tumor size and the presence of vascular invasion are ma...

An 8-year-old male neutered miniature Rex rabbit (. Oryctolagus cuniculus) was evaluated for progressive left rear limb lameness. A smooth, hard mass was palpated over the proximolateral aspect of the left tibia. Initial radiographic evaluation of the area surrounding the mass revealed a proliferative bony lesion lateral to the tibia without eviden...

Mesenchymal stem cells have been proposed to treat liver disease in the dog. The objective of this study was to compare portal, systemic intravenous and splenic injections for administration of mesenchymal stem cells to target the liver in healthy beagle dogs. Four healthy beagle dogs were included in the study. Each dog received mesenchymal stem c...

To describe surgical techniques for multiple port laparoscopic splenectomy (MLS) in dogs and report short-term outcome. Retrospective case series. Dogs (n = 10) with naturally occurring splenic disease. Medical records (March 2012-March 2013) of dogs that had MLS were reviewed. Data retrieved included signalment, weight, clinical signs, physical ex...

Three rabbits (8 months to 1.5-years-old) were evaluated for nonspecific clinical signs including hyporexia/anorexia, lethargy, and decreased/absence of fecal output 5 days to 4 months after undergoing ovariohysterectomy (OHE) procedures. Each external physical examination performed on the rabbits revealed decreased gastrointestinal sounds, abdomin...

Objective: To describe the clinicopathologic features of a cohort of dogs with adrenocortical masses that underwent laparoscopic adrenalectomy and to compare perioperative morbidity and mortality rates in these dogs with rates for dogs that underwent open adrenalectomy for resection of similarly sized (maximal diameter, ≤ 5 cm) adrenocortical mass...

Objective: To evaluate fluid production and factors associated with seroma formation after placement of closed suction drains in clean surgical wounds in dogs. Design: Retrospective case series. Animals: 77 client-owned dogs with a subcutaneous closed suction drain placed following a clean surgical procedure. Procedures: Medical records (Jan...

Objective To evaluate the relationship between hepatic steatosis and increase in liver size and resolution of shunting after surgical attenuation of congenital extrahepatic portosystemic shunts in dogs.Study DesignProspective study.AnimalsDogs (n = 20) with congenital extrahepatic portosystemic shunts.Methods Shunts were attenuated using ameroid ri...

Objective To correlate changes in hepatic volume, hepatic perfusion, and vascular anatomy of dogs with congenital extrahepatic portosystemic shunts, before and after attenuation with an ameroid constrictor.Study DesignProspective study.AnimalsDogs (n = 22) with congenital extrahepatic portosystemic shunts.MethodsCT angiography and perfusion scans w...

Objective To evaluate the in vivo pattern of ameroid constrictor closure of congenital extrahepatic portosystemic shunts in dogs.Study DesignProspective study.AnimalsDogs (n = 22) with congenital extrahepatic portosystemic shunts.Methods Contrast-enhanced computed tomography was performed immediately before, and at least 8 weeks after placement of...

To determine the heritability of extra-hepatic portosystemic shunts and elevated post-prandial serum bile acid concentrations in Maltese dogs. Maltese dogs were recruited and investigated by a variable combination of procedures including dynamic bile acid testing, rectal ammonia tolerance testing, ultrasonography, portal venography, surgical inspec...

To report long-term clinical outcome in dogs treated for single congenital extrahepatic portosystemic shunt (CEHPSS) with a ameroid ring constrictor (ARC) and to identify perioperative variables associated with outcome. Retrospective, multi-institutional study. Dogs (n = 206) with CEHPSS. Medical records of dogs with CEHPSS treated by ARC were revi...

Norwich Terriers have grown increasingly popular as show animals and pets, and awareness of respiratory problems within the breed is growing. To describe components of obstructive upper airway syndrome in a nonbrachycephalic terrier breed. Sixteen Norwich Terriers; 12 with and 4 without clinical signs of respiratory disease. Prospective case series...

Objective: To describe clinicopathologic features of dogs that underwent lung lobectomy for resection of primary lung tumors via video-assisted thoracoscopic surgery (VATS) or open thoracotomy (OT) and to compare short-term outcomes for dogs following these procedures. Design: Retrospective cohort study. Animals: 46 medium- to large-breed dogs...

Objective: To identify the blood supply to the vulval fold and adjacent skin, and evaluate it as a transposition flap for closing perineal wounds in dogs. Study design: Prospective study. Animals or sample population: Five female canine cadavers and 2 cases referred for excision of mast cell tumors adjacent to the vulva. Methods: Dissection...

To describe a technique for treating pyometra in dogs using a 3-portal laparoscopic-assisted ovariohysterectomy (LAOVH) and evaluate outcome. Retrospective case series. Dogs (n = 12). Dogs with open or closed-cervix pyometra with moderately sized (1–4 cm) uterine horn diameters based on preoperative ultrasonography and no evidence of perforation we...

To (1) determine whether different types of thin film used to occlude congenital portosystemic shunts are cellophane, and (2) evaluate the influence of saline immersion and sterilization on the tensile properties of cellophane. Ex vivo spectroscopic evaluation and mechanical testing. Rectangular strips of thin film from 4 sources. Samples were eval...

The aims of this prospective study were to quantify steatosis in dogs with congenital portosystemic shunts (CPS) using a fat-specific stain, to compare the amount of steatosis in different lobes of the liver, and to evaluate intra- and interobserver variability in lipid point counting. Computer-assisted point counting of lipid droplets was undertak...

Complications associated with the Stamey percutaneous loop cystostomy catheter (Cook Medical), including exposure of the most proximal side-hole and leakage of urine from the bladder, were encountered following percutaneous placement in three cats. In all cats, surgical exploration for removal of the catheter was performed.

Cases of canine neural angiostrongylosis (NA) with cerebrospinal fluid (CSF) evaluations in the peer-reviewed literature were tabulated. All cases were from Australia. A retrospective cohort of 59 dogs was contrasted with a series of 22 new cases where NA was diagnosed by the presence of both eosinophilic pleocytosis and anti-Angiostrongylus canton...

Appendix 1. Letter sent to all registered Small Animal Specialists and Veterinary Pathologists in Queensland and New South Wales.

Appendix 2. Questionnaire sent to clinicians with suspect cases of NA.

Appendix 3. ELISA Methods: Antigen Production {TC "ELISA Methods: Antigen Production" \f C \l "3"} [108,109].

Appendix 6. (A) Comparison between published and contemporary cases as they occurred by month. (B) Comparison between Sydney and Brisbane cases (pooled recorded and contemporary) as they occurred by month. Mean daily temperature, humidity and rainfall for the Sydney (C) and Brisbane (D) regions. Source: Australian Bureau of Meteorology, 2005.

Appendix 7. Case Details.

Appendix 4. Control Group B Case Details.

Appendix 5. Case Details: Outline below are the case details from Mason Master's thesis published in 1983 [14].

To review the success rates for liposuction of lipomas in dogs, report early complications and medium-term outcomes and formulate recommendations on the most appropriate candidates for liposuction. Retrospective study of 20 dogs with 76 lipomas diagnosed by cytology, in which dry liposuction was attempted. Case records were reviewed for number and...

The mulesing procedure is the main procedure used to control breech flystrike of sheep in Australia, but other permanent methods of altering breech conformation are currently being investigated and wound healing is an important component of that comparative assessment. To qualitatively assess the gross and microscopic tissue damage and wound healin...

A two-part study examined wound healing and contraction occurring after mulesing and two alternative methods of preventing breech flystrike in sheep. To quantify wound healing using a scoring system and to assess the contractility of the wound bed of the breech after mulesing, cetrimide-intradermal treatment and application of clips. The study grou...

Severe portal vascular anomalies have been reported previously accompanying azygos continuation of the caudal vena cava, polysplenia, and situs anomalies in dogs and people. Three dogs with portal vascular anomalies were identified by means of CT angiography as having portal vein aplasia with portal insertion into the caudal vena cava, azygos conti...

Mulesing is an important method of preventing flystrike of Merino sheep in Australia, but because there are important short-term welfare issues associated with mulesing, alternative methods of removing the skin folds for breech flystrike prevention are being investigated. To examine the short-term systemic effects of mulesing and two proposed alter...

Foreign body aspiration is a differential diagnosis for acute or chronic cough that requires medical or surgical management in animals. Success of bronchoscopy in airway foreign body removal is dependent on the size of the animal, duration of clinical signs, and location of the foreign body. Thirty-two dogs and 5 cats with airway foreign bodies ide...

An 8-year-old terrier cross and a 10-year-old German Shorthaired Pointer presented to the University Veterinary Centre, Sydney, for investigation of long-standing tenesmus and dyschezia. Both patients had an annular adenocarcinoma at the colorectal junction. Exploratory laparotomy was performed and the affected large intestinal segment was removed...

To identify and describe the ultrasonographic features of soft tissue tumours in dogs. Superficial soft tissue tumours of various histological types, including mast cell tumours (MCTs) and soft tissue sarcomas (STSs), were evaluated. Ultrasound was used to visualise internal characteristics of the tumour, including vascularity. Tumours were categor...

Merino lambs are currently the subject of much research into the welfare aspects of mulesing and mulesing alternatives. Obtain haematology, biochemistry and acute phase protein reference intervals using modern methodologies for female Merino lambs. Blood was collected from 50, weaned, 9- to 16-week-old, female Merino lambs. Haematology and biochemi...

Continuous positive airway pressure (CPAP) has been is used widely in humans to manage obstructive sleep apnoea syndrome, but it has not been widely used in animals. A brachycephalic cat, with previously undiagnosed laryngeal paralysis, that developed acute upper respiratory tract obstruction on recovery from anaesthesia, is presented. The conditio...

Three young dogs were evaluated because of the sudden development of ascites. In each case ascites was referable to non-fibrosing hepatic disease associated with portal hypertension. Obstruction to portal flow was pre-sinusoidal in two cases and post sinusoidal in the other. In all cases ascites developed in the absence of severe hypoalbuminaemia....

Objective—To describe six dogs with congenital abnormalities involving the portal vein, caudal vena cava, or both. Animals—Six client-owned dogs with congenital interruption of the portal vein or the caudal vena cava, or both. Methods—Portal vein and caudal vena cava anatomy was evaluated by contrast radiography and visualization at surgery. Vascul...

Three dogs with trichuriosis were presented because of depression, anorexia and severe dehydration following a period of chronic diarrhoea, Systemic signs attributable to hypovolaemia and acid-base and electrolyte disturbances resolved following intravenous fluid therapy, although diarrhoea persisted until appropriate anthelmintics were administere...

Four cats with extensive pyogranulomatous panniculitis and dermatitis due to Mycobacterium smegmatis were evaluated over an eight-month period. All were treated initially with doxycycline (50 mg per cat every eight to 12 hours) for several weeks, then subjected to radical surgical excision of infected tissues. Reconstructive surgery utilising advan...

ABSTRACTA 12-week-old kitten with congenital mitral valve dysplasia was shown by ante mortem and post mortem examination to have pneumonia and purulent pleurisy. A Mycoplasma species was isolated from a sample of pleural fluid collected at necropsy. Mycoplasmosis should be considered in the differential diagnosis of pyothorax in cats.

Six bullmastiffs with congenital heart disease were evaluated over a three-year period. In all the cases the problem was shown to be dysplasia of the pulmonary valve. Five cases were male, one was female. All dogs available to follow-up developed signs of cardiac decompensation. Bullmastiffs must be added to the list of breeds in which valvular pul...

To describe repair of chronic palatine defects in cats, with free cartilage graft harvested from either the pinna (scapha) or vertical ear canal (annular cartilage). Retrospective study. Cats (n=5) with chronic oronasal fistula. Cartilage was harvested from either the scapha or annular cartilage and epithelium removed. After preparation of the edge...

Objective: To determine whether breed, sex, country of origin, and age are associated with anatomic location of intrahepatic portosystemic shunts (IHPSS) in dogs. Study design: Multi-institutional retrospective case series. Sample population: Dogs (n=125) with IHPSS from the veterinary teaching hospitals of the University of Florida (21), Sydn...

A 1-year-old male Boxer dog presented with sustained supraventricular tachycardia and tachycardia-induced cardiomyopathy. Conversion to sinus rhythm was achieved initially with intravenous lignocaine and subsequently with oral procainamide. Oral procainamide treatment was relatively successful in maintaining normal sinus rhythm with no side effects...

To record 17 cases of nocardiosis in cats from eastern Australia and to compare this series with cases previously reported. Retrospective/prospective study. Nocardia spp infections were diagnosed in 17 cats over 14 years from the three eastern states of Australia. There were no isolates from dogs during this period, but one isolate from a koala and...

To report outcomes after reconstruction of the lower eyelid following resection of squamous cell carcinoma (SCC). Retrospective study. Five cats (6 eyelids). Case records were reviewed for breed, sex, surgical findings, complications, and outcome. Six eyelids were reconstructed in 5 cats; functional outcome was excellent. Neither wound breakdown no...

To describe clinical features of brachycephalic airway obstructive disease in dogs, the incidence of laryngeal collapse in dogs presenting for surgery and the outcome after surgery in dogs with laryngeal collapse. Basic clinical details were reviewed retrospectively in 73 dogs. Presence of laryngeal collapse and short-term outcomes after surgery we...

To evaluate the effect of species and breed on the anatomy of portosystemic vascular anomalies in dogs and cats. Retrospective study of 233 dogs and nine cats presenting to the University Veterinary Centre, Sydney. Case records were evaluated for breed, sex, age, anatomical and histological diagnosis. Cases were included when a portosystemic vascul...

Wooden skewer foreign bodies were found in eight dogs. Five presented for evaluation of draining sinuses and two for inflammatory disease referrable to the thorax, abdomen or pelvic region. In an additional case, pneumothorax resulted from perforation of the stomach and diaphragm. Ingestion was considered the most likely mode of access of the forei...

To determine the prevalence of intraoperative hemorrhage in a consecutive series of dogs undergoing patent ductus arteriosus (PDA) ligation at a veterinary teaching hospital, and to describe strategies to reduce the risk of ductus perforation and deal with hemorrhage when it occurs. Retrospective clinical study. Sixty-four dogs. The records of all...

To characterise the types of canine soft tissue sarcoma and mast cell tumour treated surgically at the University Veterinary Centre, Sydney. To evaluate the success of surgical treatment of these tumours and identify variables predictive of local recurrence and survival. To establish whether conclusions drawn from previous international studies are...

To report outcomes after cellophane banding of single congenital portosystemic shunts in dogs and cats. Retrospective study of sequential cases. One hundred and six dogs and five cats. Medical records were reviewed for breed, sex, age at surgery, shunt anatomy, results of pre- and postoperative biochemical analysis, development of postligation neur...

A 5-year-old Poodle-cross was initially presented for exercise intolerance and difficulty in chewing and yawning. Some months later it acutely developed lethargy referable to complete heart block. Further investigations before and after permanent pacemaker implantation demonstrated Coombs-positive immune-mediated haemolytic anaemia, presumptive mas...

A sliding hiatal hernia (where the terminal oesophagus, oesophagogastric junction and part of the stomach move cranially through a diaphragmatic defect) was diagnosed in a 4-month-old, Shar-Pei puppy presented for evaluation of regurgitation. The diagnosis was confirmed using radiography. Herniorraphy consisted of repositioning the stomach within t...

Gastroduodenal ulceration (GU) and blood loss was diagnosed in eight cats and compared with 25 previously reported cases of feline GU. Cats with GU presented in a critical condition. Clinical signs consistent with gastrointestinal bleeding were infrequently identified although anaemia was a common finding. Non-neoplastic causes of feline GU tended...

Nasopharyngeal disease was diagnosed in 38 dogs and 24 cats at the University Veterinary Centre, Sydney, Australia, between 1990 and 2001. Most of the animals were presented for stertor and/or difficult breathing. Evaluation of animals with suspected nasopharyn-geal disease includes physical examination (particularly of local lymph nodes), digital...

To describe the use of skin-fold advancement flaps for covering large skin defects in dogs and cats. Clinical study. Eight client-owned animals: 6 dogs and 2 cats. Six dogs and 2 cats underwent reconstruction of soft-tissue wounds resulting from traumatic, neoplastic, or infectious lesions. Skin-fold flaps were created by division of the medial and...

Objective— To determine the prevalence of intraoperative hemorrhage in a consecutive series of dogs undergoing patent ductus arteriosus (PDA) ligation at a veterinary teaching hospital, and to describe strategies to reduce the risk of ductus perforation and deal with hemorrhage when it occurs. Study Design— Retrospective clinical study. Animals— Si...

Eleven of 89 dogs (12 per cent) developed neurological signs within six days of surgical attenuation of a congenital extrahepatic portosystemic shunt. Neurological signs were not associated with hepatic encephalopathy or hypoglycaemia. Signs varied in severity from non-progressive ataxia (three dogs) to generalised motor seizures (four dogs), progr...

Three male Poodles (two Toy, one Miniature) were presented to their veterinarians for evaluation of urolithiasis and varying degrees of hepatic encephalopathy. All three dogs were diagnosed as having intrahepatic shunts and referred for surgical correction. In each case, shunts arose from the right branch of the portal vein and were amenable to per...

A 7-month-old, male, Burmese cat was presented with an oral mass that had rapidly regrown following excisional biopsy 3 weeks earlier. The tumour was identified by histological examination as a feline inductive odontogenic tumour. A unilateral segmental mandibulectomy was performed. Although dental malocclusion resulted from mandibular drift to the...

A young, female Maltese dog was presented with intermittent vomiting of bile. Biochemical evidence of persistent mild hepatopathy had been present for 11 months. Exploratory celiotomy was performed. Absence of the gallbladder with malformation of the quadrate lobe of the liver was identified. There was histological evidence of bile duct proliferati...

Mycobacteria were isolated and characterised from 49 cats with extensive infections of the subcutis and skin. Cats were generally between 3 and 10 years of age, and female cats were markedly over-represented. All isolates were rapid-growers and identified as either Mycobacteria smegmatis (40 strains) or M fortuitum (nine strains). On the basis of E...

A German Shepherd Dog presented with recurrent intermandibular and intralingual swelling. Cytological and microbiological findings on fluid aspirated from the mass were consistent with an infected cyst lined by epithelium. The sinus was explored and an epithelium-lined cystic structure was extirpated from the frenulum and body of the tongue. This s...

To evaluate clinical features, anatomical location, nature of pseudocyst fluid, results of surgical treatment and links with underlying renal disease in cats with perirenal pseudocysts. A retrospective study of 26 affected cats, including 8 treated surgically. Nineteen (73%) affected cats were male. The median age was 11 years. Most presented for a...

Between 1997 and 1999, five domestic crossbred cats (four long haired, one short haired) presented with a palpable abdominal mass and were shown to have small intestinal trichobezoars at laparotomy or necropsy. Hair balls were associated with partial or complete intestinal obstruction and were situated in the proximal jejunum to distal ileum. In fo...

A 10-year-old spayed domestic shorthaired cat was presented for behavioural changes, signs suggestive of visual deficits and aimless circling. Neuro-ophthalmological examination suggested the cat had central blindness. CT scans following administration of iohexol demonstrated a contrast-enhancing mass in the vicinity of the third ventricle resultin...

Intra-abdominal cryptococcosis was diagnosed in two young dogs. The first, an entire male border collie, was presented with vomiting. An abdominal mass detected during physical examination proved to be cryptococcal mesenteric lymphadenitis on exploratory laparotomy. The second dog, a female neutered giant schnauzer, was presented with neurological...

To evaluate combination therapy with azathioprine and metronidazole in German Shepherd Dogs with perianal fistulae. Prospective study. Five dogs (31.5 to 36.0 kg) with perianal fistulae were treated with azathioprine (50 mg per dog orally every 24 h) and metronidazole (400 mg per dog orally every 24 h). Patients were re-evaluated at 2 week interval...

To evaluate outcomes after attenuation of extrahepatic portosystemic shunts in dogs using surgical silk. Retrospective study. Case records were reviewed for degree of surgical attenuation, experience of the primary surgeon, perioperative mortality and problems related to persistent portosystemic shunting or shunt ligation. Presence of portosystemic...

Two miniature Schnauzer dogs were treated for pericardial masses. In one dog the mass consisted of necrotic fat that was attached to the apex of the pericardium by a pedicle. No obvious communication with the abdomen was present. The second dog had a peritoneopericardial hernia associated with a chronic cystic haematoma. In each case the mass was p...

To determine the most effective and reliable method for progressive attenuation of single extrahepatic portosystemic shunts in dogs. The effects of the four treatments on femoral vein diameter and histology were compared with controls. Fourteen healthy adult dogs. Twenty-eight canine femoral veins were subjected to sham surgery (4), partial attenua...

To evaluate the efficacy and short term effects of a cellophane banding technique for progressive attenuation of canine single extrahepatic portosystemic shunts. A prospective trial of 11 dogs with single congenital extrahepatic shunts. Rectal ammonia tolerance testing and routine biochemical tests were performed preoperatively on all dogs. In seve...

To describe six dogs with congenital abnormalities involving the portal vein, caudal vena cava, or both. Six client-owned dogs with congenital interruption of the portal vein or the caudal vena cava, or both. Portal vein and caudal vena cava anatomy was evaluated by contrast radiography and visualization at surgery. Vascular casts or plastinated sp...

To present details of an unusual type of portosystemic shunt and its surgical management in two dogs. Two young dogs that had a tentative diagnosis of a portosystemic shunt on the basis of clinical signs and serum biochemical abnormalities. Abdominal ultrasonography and contrast portography demonstrated multiple intrahepatic shunts. In both cases,...

Objective—To present details of an unusual type of portosystemic shunt and its surgical management in two dogs. Animals—Two young dogs that had a tentative diagnosis of a portosystemic shunt on the basis of clinical signs and serum biochemical abnormalities. Abdominal ultrasonography and contrast portography demonstrated multiple intrahepatic shunt...