VRU 2002 Flashcards
Ramirez et al: What is the most common organ associated with histiocytic sarcoma?
Spleen Then liver and lymph nodes
That is the common finding in on US with a spleen affected by histiocytic sarcoma?
Well-defined hypoechoic nodules
That is the common finding in on US with a liver affected by histiocytic sarcoma?
Well-defined nodules that vary widely with echogenicity from hypo to hyper.
What were the most common LN affected by histiocytic sarcoma in the abdomen?
Mesenteric Medial iliac
Saunders et al: CT Nasal Aspergillosis in Dogs, What are the most commonly encountered CT findings of nasal aspergillosis in dogs?
- Moderate to severe cavitary destruction of the turbinates
- Non-specific thickening of the mucosa adjacent to the inner surface of bones of the frontal sinus, maxillary recess and nasal cavity
- Thickened reactive bone.
Saunders et al: CT Nasal Aspergillosis in Dogs, Attenuation values and contrast values were helpful or not helpful with dogs with nasal aspergillosis?
Not helpful/non-specific
Saunders et al: CT Nasal Aspergillosis in Dogs, CT findings are consistent with what type of disease progression?
1st - one nasal cavity, then ipsilateral frontal sinus, then contralateral nasal cavity then contralateral frontal sinus.
Saunders et al: CT Nasal Aspergillosis in Dogs, What percentage of dogs with chronic nasal dischange have fungal rhinitis?
7-34%
Saunders et al: CT Nasal Aspergillosis in Dogs, For what findings should nasal aspergillosis be the primary differential when assessing dogs with CT?
Cavitated lysis of the turbinates Thickening of the nasal mucosa along the bones of the nasal cavity or frontal sinus.
Mellema et al: Meningeal enhancement MRI, what coorelation was seen between meningeal enhancement and diagnosis?
None.
Saito et al: CT findings of intracranial blasto, what are the main CT findings of intracranial blasto?
- Periventricular enhancement consistent with ependymitis 2. Ventriculomegaly
What is the likely diagnosis? Other differentials?
Osteoma is the likely diagnosis
Osteosarcoma
Granuloma
Infarct
Chang et al: Superparamagnetic iron oxide-enhance MRI of liver in dogs, what does iron oxide cause in the liver?
Shortened T2 relaxation
hang et al: Superparamagnetic iron oxide-enhance MRI of liver in dogs, iron oxide is taken up by what cells in the liver?
Kupffer cells
Chang et al: Superparamagnetic iron oxide-enhance MRI of liver in dogs, why do liver tumors not uptake iron oxide?
Because tumors do not have kupffer cells thus tumors do not have a loss of uptake in the liver.
Chang et al: Superparamagnetic iron oxide-enhance MRI of liver in dogs, what was the adverse effect of iron oxide?
Nothing
Chang et al: Superparamagnetic iron oxide-enhance MRI of liver in dogs, how much did the signal intensity drop in 20min?
65.7% +/- 10%
Horse is having gradual increase in dyspnea… what are your differentials?
Arytenoid chondritis - what it is.
Nasal cyst/polyp
retropharyngeal abscess
foreign body
neoplasia
epiglottic cyst.
Congenital tumors in cattle?
mesothelioma
melanoma
nephroblastoma
lipoma
What is the reported tumor-track implanation rate for FNA of bladder masses in humans?
0.009%
What increases the risk of potential implantation after FNA of bladder masses?
Large gauge needles (<21g)
multiple pokes
Nyland et al: Neddle tract implantation TCC, what is the take home?
Implantation is rare.
It may happen and there for if resectable then probably try something else.
Where do cats commonly get TCC?
Apex of bladder
What breed of dog is predisopsed to cranial mandibular osteotomy?
Westies
Scotties
Cairne
3-7months of age.. look at TMJ to make sure it is not involved
TMJ dysplasia is associated with what breeds?
Bassets
Irish setters
Dashshunds
Cockers
CKCS
What is the difference between true ankalosing and false ankalosing?
True is from pathology in the TMJ
False is pathology around the TMJ causing reduction of TMJ movemnent
[18F]Fluorobenzylguanidine ([18F-PFBG) is used for what?
Norepiephrine analog and used for imaging pheochromcytoma
Cuccovillo et al: target lesions and cytology results, what is the positive predictive value of one target lesion in either the liver or spleen? Multiple lesions?
One target: 74%
More than one: 81%
Lamb et al: Accuracy of radiographs with IVD protrusion, what was the positive predictive value of the narrowed disc space?
63-71%
Lamb et al: Accuracy of radiographs with IVD protrusion, was radiographs accurate enough to attempt surgery on suspected IVDD sites?
No.. not without further imaging
Lamb et al: Accuracy of radiographs with IVD protrusion, what are the radiographic signs of intervertebral disc protrusion?
Narrowed intervertebral space
Narrowed dorsal articulation
Small or opaque intervertebral foramen
Calcified material in the vertebral canal
Vaccum phenomenon
Automyelogram (dural calcification deviated dorsally)
Innes et al; changes in the canine stfile post CCL surgery, used the femoropatellar joint space to access cartilage thickness (as seen here) and found that there was a significant correlation… T/F?
True.
Innes et al; changes in the canine stfile post CCL surgery, found the biggest change in femoropatellar joint thickness was when?
Between 0 and 7 months.
Innes et al; changes in the canine stfile post CCL surgery, what factor influenced this measurement the most between patients?
Body weight.
Walker et al: Meniscal ossicles in non-domestic cats, what group of non-domesticed cats were not found to have meniscal ossicles?
Bobcats.
Essman et al: intrathoracic peripheral nerve sheath tumor in dog, what species of animal get intrathoracic peripheral nerve shealth tumor? What do they look like?
Cattle…commonly multiple in the cranial mediastinum
Essman et al: intrathoracic peripheral nerve sheath tumor in dog, neurogenic tumors make up 20-35% of all mediastinal masses and are classified into three groups that include?
Peripheral nerves
Symphathetic ganglia
Parasympathetic ganglia
Dixie et al; CKCS and TMJ dysplasia, This is commonly a pathologic finding in CKCS…T/F
False… it is commonly incidental
Dixie et al; CKCS and TMJ dysplasia, what are common radiographic/CT findings of TMJ dysplasia?
Rostrally located retroarticular processes
Misshapen fossa
Widening of the joint space
Sclerosis of the condylar process.
Ballegeer et al: radiographic appearance of bronchoalveolar carcinoma in cats, what were the three main categories?
Mixed bronchoalveolar pattern
Ill-defined alveolar mass
Mass with cavitation
Ballegeer et al: radiographic appearance of bronchoalveolar carcinoma in cats, all cats had some form of what type of disease which may aid in the diagnosis of bronchoalveolar carcinoma?
Bronchial disease which may represent airway metastasis due to the unique characteristic of extension along existing airways and alveolar septa.
Ballegeer et al: radiographic appearance of bronchoalveolar carcinoma in cats, what was the most common finding or type of BAC found?
Cavitary mass.
Ballegeer et al: radiographic appearance of bronchoalveolar carcinoma in cats, what was the most common metastic site for BAC?
TB lymph nodes
Rettenmaier et al: Prevalence of canine hip dysplasia, there was a clinical significance between hip dysplasia between sexes, and between purebred and mixed breed dogs… T/F
False.. no difference.
Rettenmaier et al: Prevalence of canine hip dysplasia, what was the most common radiographic manifestation of hip dysplasia after 12 months? Before?
After: DJD
Before: Subluxation
Lamb et al: Myelography in dogs with myelomalacia, what were the most common radiographic signs of myelomalacia?
Contrast medium infiltratioon into the spinal cord
Spinal cord swelling.
Magnetic susceptibility can be increased by lengthening the what?
TE
Saito et al: MRI features of lissencephaly, what are the imaging characteristics of lissencephaly?
Smooth cerebral surface
Thick neocortex
No corona radiata
Saito et al: MRI features of lissencephaly, what breed is lissencephaly only reported in?
Lhasa Apsos
Chordomas are commonly found in what animal and where?
Ferrets in the caudal vertebrae (sacrum)
Reichle et al: Renal US, CT and functional testing, what was the difference between normal cats and cats with polycystic kidney disease?
Nothing.
Daniel et al: Quantitative thyroid scintigraphy as a predicotr of serum T4,
What was the best quantitative parameters that significantly correlated with serum T4?
20mins thyroid:salivary ratio off the most intense of the two lobes
All parameters were correlated.
Zekas et al: cranial mediastinal cysts in cats, what is the most common consequence of these cysts in cats? Dogs?
Cats are usually asymmetamatic - has cause dyspnea and pleural effusion (rarely)
Dogs commonly cause problems and can rupture to create a shit sandwich
Schwarz et al: Aortic and cardia mineralization in the dog, what breed is over represented?
Rotties
Busoni et al: The magic angle of the DDF, what was the magic angle where the intensity of the DDF continues to increase til it reaches this point?
55 degrees
Busoni et al: The magic angle of the DDF, TE in this study was low or high?
Low (15ms)… the higher the TE the less the magic angle
Busoni et al: The magic angle of the DDF, how does the magic angle happen?
Tendons are acellular and composed of parallel bundles. This highly ordered structure is thought to restrict motion of water and enhance dipolar interations greatly
Busoni et al: The magic angle of the DDF, what parameters of TE and flip angles produce the greatest magic angle?
Low TE
High flip angle
Busoni et al: The magic angle of the DDF, did extension of the metacarpophalangeal joint help reduce the magic angle?
No… signal intensity was independent of the joint extension.
Wallack et al: Accuracy of MRI for estimating intramedullary osteosarc extent, accuracy of MRI was? CT? Rads? Scintigraphy?
- MRI tends to overestimate the length by 3 +/- 13%
- Craniocadual rads 4 +/- 26%
- Scintigraphy overstimates 14 +/- 28%
- Lateromedial rads 17 +/- 28%
- CT overestimates 27 +/- 36%
Wallack et al: Accuracy of MRI for estimating intramedullary osteosarc extent, what was the best sequence to use?
Sag T1W non-contrast
T1W added supplemental info in 2/8 dogs.
Vernau et al: Intracranial intra-arachnoid diverticulum; if you see the diverticulum is T1 hyperintense to the CSF?
Hemorrhage. This can cause acute enlargement of the cyst causing late onset of clinical signs.
Chun et al: Predictors of response to I131 therapy in hyerpthyroid cats, what was the relationship between the pre-treatment T4 levels and post-treatment levels? What was the relationship between the thyroid:salivary gland ratio and post-treatment T4 levels? And at what time points were these observed?
There was a significant relationship between both the pre-treatment T4 levels and the thyroid:salivary gland ratio, with the post treatment t4 levels AT ALL TIME POINTS from 1 day -1 year post treatment.
Chun et al: Predictors of response to I131 therapy in hyerpthyroid cats, what was the relationship between different times of methimazole discontinuation (>5 days vs <5 days) in response to treatment?
None. They did not say if the post-treated hypothyroid cats were from the methimazole group and therefore cant confirm the rebound effect causing too much uptake of I131.
Delay or irregular ossification of the medial condyle of the femur suggests what?
Epiphyseal dysplasia.
Angulation of the femoral metaphysis is characteristic of what?
Epiphyseal dysplasia hemimelic
What compartment is commonly affected in epiphyseal dysplasia hemimelica?
Medial
Paloni et al: US findings of dogs with intestinal adenocarcinoma, what are the most common primary GI neoplasms in dogs?
Adenocarcinoma
Lymphoma.
Paloni et al: US findings of dogs with intestinal adenocarcinoma, What was the only characteristic that influence survival time?
Gender…males lasted way longer
Only 5/21 were female dogs though
Paloni et al: US findings of dogs with intestinal adenocarcinoma, Common ultrasound features associated with intestinal adenocarciinoma?
1. Complete loss of wall layering (all dogs)
- Thickening - transmural circumferential
- Luminal fluid proximal to the lesion
- Lymphadenopathy or mesenteric nodules (half)
- Hypoechoic lesion with irregular lumen.
Paloni et al: US findings of dogs with intestinal adenocarcinoma, the majority of lesions were found where?
Small intestines.
Paloni et al: US findings of dogs with intestinal adenocarcinoma, most common place to mets to for adenocarcinoma?
Lymph nodes
Mesentery
Paloni et al: US findings of dogs with intestinal adenocarcinoma, is there a sex prediclect?
Yes.. males are more likely.
Hannson et al: LA/Ao ratio using 2D and M-mode US in CKCS, no difference was found between M-mode and 2D measurements in what?
Normal dogs
Hannson et al: LA/Ao ratio using 2D and M-mode US in CKCS, with all dogs (normal and with mitral regurg) what was the difference between 2D and m-mode ratios?
2-D was always bigger by around 11%
Hannson et al: LA/Ao ratio using 2D and M-mode US in CKCS, what is more sensitive to LA enlargment?
2D ratio
Hannson et al: LA/Ao ratio using 2D and M-mode US in CKCS, what are the normal published values for M-mode LA/Ao ratio?
1.0 - 1.6
Hannson et al: LA/Ao ratio using 2D and M-mode US in CKCS, what measurement is independent of body weight thuse being a better predictor of atrial enlargement?
2-D
Hannson et al: LA/Ao ratio using 2D and M-mode US in CKCS, at what LA/Ao ratio was there the most difference between the 2D and M-mode measurements?
2.0-2.5 (this is an abnormal dog ratio)
Lamb et al: Accuracy of radiographs with IVD protrusion, What was the two most accurate signs of disc protrusion?
Narrowed disc space
Vaccum phenomenom
Lamb et al: Accuracy of radiographs with IVD protrusion, in what size of dog does the spinal cord occupy most of the spinal canal?
little dogs
A lot more fat around a large dogs cord
Lamb et al: Accuracy of radiographs with IVD protrusion, accuracy of radiographs in findings intervertebral disc protrusion?
51-61%
Lamb et al: Accuracy of radiographs with IVD protrusion, what disc spaces are the smallest in beagles in the lumbar spine?
L4-L6
Lamb et al: Accuracy of radiographs with IVD protrusion, was there a difference and if so what was it, of little or big dogs and the accuracy of radiographs and disc protrusions?
Nope.
Lamb et al: Accuracy of radiographs with IVD protrusion, what regions are predisposed to Hansen type 2 protrusions?
Caudal cervical
LS
