I have heard it suggested in cardiological circles that alternating bidirectional hepatic vein flow is an indicator of right heart congestive failure. But it’s not that straightfoward. Normal dogs also have not one but two reversed phase in their hepatic vein flow: As was described originally by Szatmari et al. some years ago: http://www.ncbi.nlm.nih.gov/pubmed/11327368 The … Continue reading
Paraprostatic cysts are thought to arise from remnants of the mullerian duct. This is a case in which this putative embrological origin seems particularly convincing. A two-horned cystic structure runs between bladder and colon: &nbs… Continue reading
This is a cat who was investigated early in life on account of episodic malaise and raised bile acids. At the time a provisional diagnosis of primary hypoplasia of the portal vein was made. This is the main portal vein: The main portal vein is obviously and abnormally narrow but flow within it is hepatopetal. … Continue reading
An 18 month old crossbreed was presented with a two month history of intermittent pyrexia and malaise. Recently he had become polyuric/polydipisc and hypercalcaemia was detected. His ultrasonography is striking: This is an area of retroperitoneal fat: There are numerous small, discrete hyperechoic nodules. And the same is true for his subcutaneous fat this is … Continue reading
This amazing video shows a wave of contraction passing along a dog’s accessory pancreatic duct towards the minor papilla on the descending duodenum: With still images this is a ‘bolus’ of pancreatic juice in transit and waiting to be released into the duodenum: Little has been written about pancreatic duct function in cats and dogs. … Continue reading
Just an unusual case. An acutely poorly, pyrexic pug who was in season at the time. As far as we know no mating involved. On abdominal ultrasonography, working from cranial to caudal the first abnormality was localised abdominal fat inflammation around the ovaries: The uterine horns are abnormally hypoechoic and contain a little turbid content … Continue reading
These are a few recent canine examples. A prominent dilated venous structure in the centre of the liver is a frequent, relatively straightforward pointer to a likely diagnosis: In this video clip the liver is seen in transverse plane. The hypoechoic structure nearer the top of the picture is the portal vein which flows into a … Continue reading
This is an ominous-looking bladder mass in a bitch: trigonal site, heterogeneous echogenicity and bladder wall invasion are all portents of potential malignancy. Athough a transitional carcinoma looks extremely likely, it would be good to have histological confirmation before making a definitive plan of action. The obvious issue is that percutaneous needle biopsy carries some … Continue reading
This is a 5 month-old cat with recurrent haematuria. The bladder: The bladder is almost empty apart from a collection of calculi up to 4mm diameter. And this is very suspicious in a young cat. The vessels at the porta hepatis are interesting, although the portal vein and its tributaries are arranged normally the whole … Continue reading
This is a slightly unusual sonographic situation -a missing swab in the count up after abdominal surgery. Not quite the same as the usual scenario where swabs weren’t counted and the symptomatic patient then presents for imaging some months later. In this dog, 2 days post-op there is very little in the way of reaction … Continue reading
