Uncategorized

Spontaneous pneumothorax in a cat

A previously-healthy, three-year-old, indoor DSH was presented with a 2 day history of cough and deteriorating respiratory distress. These are the thoracic radiographs: Looks pretty suspicious for a right sided pneumothorax. This is cat who has definitely no contact with motor vehicles. But….spontaneous pneumothorax is certainly a possibility: http://www.ncbi.nlm.nih.gov/pubmed/24697868 http://www.ncbi.nlm.nih.gov/pubmed/22344603 It’s not common and, as … Continue reading

18/09/2016 roger Internal medicine, ultrasonography, Uncategorized

Another anaphylactic shock dog

This is my own dog -I’m feeling able to write this now that he’s recovered fully. As previously discussed anaphylaxis is a phenomenon which can be difficult to document definitively. However, like the last case which I wrote up a few weeks back this involved a previously 100% healthy dog with a wasp/bee chasing habit … Continue reading

27/08/2016 roger Internal medicine, ultrasonography, Uncategorized

Aerobilia in a cat with extrahepatic biliary obstruction

I should be doing my accounts but this is really a lot more interesting. A few weeks back I posted a case with gas in the portal circulation. Today’s cat has the other potential cause of gas densities in the liver: aerobilia. This is also not common. He is a quite poorly little cat with … Continue reading

26/08/2016 roger Internal medicine, ultrasonography, Uncategorized

Canine ureteral jet entering bladder

Ever spent a long time hunting ureteral jets? This is how they should be: This dog likely has myoglobinuria. The bladder contains heavily pigmented urine -which appears to have fine echotexture in this image. At the time of scanning she had been on intravenous fluids for a few hours. I suspect that the urine now … Continue reading

11/08/2016 roger Internal medicine, ultrasonography, Uncategorized

Portosystemic shunts involving the left phrenic vein in cats

Our understanding of shunt anatomy in cats and dogs has moved forward recently with advances in imaging technology: http://www.ncbi.nlm.nih.gov/pubmed/26563977 http://www.ncbi.nlm.nih.gov/pubmed/23888909 In cats, shunts through the right gastric vein appear not to have reported; whereas in dogs they are quite common. Broadly-speaking, feline congenital extrahepatic shunts may originate at 1) splenic vein 2) mesenteric vein or … Continue reading

26/07/2016 roger Internal medicine, ultrasonography, Uncategorized

Ultrasonographic features of anaphylaxis in the dog

Anaphylaxis is familiar in human medicine and as a general concept the idea of a systemic, immediate hypersensitivity reaction is straightforward enough. However, strict defining criteria for a diagnosis of anaphylactic episodes have proved more difficult. The phenomenon is much less commonly documented in domestic pets than in people. This case relates to a young, … Continue reading

18/07/2016 roger Internal medicine, ultrasonography, Uncategorized

Portal venous gas in dogs and cats with severe enterocolitis

Gas densities in the liver on ultrasonography may be found within the parenchyma (emphysematous hepatitis: often associated with necrotic neoplasms), in and around the gallbladder (emphysematous cholecystitis) or in vessels -either biliary tracts (pneumobilia) or portal veins. Gas in portal veins tends to be carried away from the to the periphery of the liver. This … Continue reading

16/07/2016 roger Internal medicine, ultrasonography, Uncategorized

Diastolic mitral regurgitation in canine heart block

A 12 year-old Springer Spaniel was examined for collapse at exercise and was found to have second degree heart block with a 4:1 p:QRS ratio: Echocardiography was performed to screen for structural heart disease. This left apical view shows mitral regurgitation: But if you look at the ECG trace it’s not happening in association with … Continue reading

26/05/2016 roger cardiology, ultrasonography, Uncategorized

Another congenital extrahepatic portosystemic shunt via the right gastric vein in a dog

This is very similar to the one from last week, but with videos: The main part of the portal vein is of unremarkable diameter (suggesting that most portal flow reaches this point). At the confluence with the gastroduodenal vein (GDV), however, flow is diverted through the GDV and then turns dorsally into the right gastric. … Continue reading

25/05/2016 roger Internal medicine, ultrasonography, Uncategorized

Thoracic foreign body with tracking sinuses in a Springer Spaniel

This poor chap had suffered ‘pyrexia of unknown origin’ for the best part of a year prior to this episode. Despite thorough investigation, a definite diagnosis remained elusive. Until he blew up a new lump on his left flank. That looks pretty consistent with an abscess doesn’t it? But no sign of anything foreign that … Continue reading

21/05/2016 roger Internal medicine, ultrasonography, Uncategorized