spleen Flashcards
the spleen in dogs is usually____ to the liver and renal cortex.
a) hypoechoic
b) isoechoic
c) hyperechoic
C, however, its relative echogenicity
can be isoechoic or mildly hyperechoic to the renal cortex in cats
in puppies, a reticulonodular pattern with well-defined hypoechoic nodules is most marked at what age?
a) 10-16 weeks
b) 20-28 weeks
c) 28-36 weeks
d) 36- 50 weeks
C.
There was a strong quadratic relationship between time and the grade of the splenic parenchyma. It was found that the splenic parenchymal patterns changed with increasing age, with a granular appearance initially at 4 weeks, followed by a reticulonodular pattern with well-defined hypoechoic nodules-most marked between 28 and 36 weeks, after which this pattern decreased until there was a homogeneous granular pattern again at 60 weeks.
this appearance of the spleen in cats is…
a) specific for lymphoma
b) more likely in lymphoma, but other causes should be listed
c) more likely in FIP, but other causes should be listed
d) more frequently benign, but other causes should be listed
D. two papers from 2020 isfm
In the present study, lymphoproliferative disorders accounted for nearly 70% of cats with an HCP. Among them, two-thirds were represented by lymphoid hyperplasia and one-third by lymphoma (24.2% of all cases). The remaining conditions observed included splenitis, extramedullary haematopoiesis and one case of histiocytic sarcoma.
prevalence 6.8%
3 differentials for hypoechoic splenomegaly
torsion, massive infarction, round cell neoplasia
honeycomb appearance of the spleen in dogs is more consistent with…
a) EMH
b) lymphoma
benign hyperplasia
c) haematoma
d) splenitis
B but can occur with the others
3 differentials for anechoic possibly septated lesions in the spleen in dogs
haematoma, haemangiosacrcoma, abscess, haemangioma
splenic cysts and abscesses are rare
most common neoplasia of the feline spleen is
a) mast cell tumour
b) lymphoma
c) myeloprolifierative disease
d) haemangiosarcoma
Mast cell neoplasia, lymphoma, myeloproliferative disease and haeman-giosarcoma were the most common tumours of the feline spleen- in that order.
Feline abdominal ultrasonography: What’s normal? What’s abnormal? The spleen
spleen of a dog
a) vascular compromise
b) lymphoma
c) haemangiosarcoma
d) histiocytes sarcoma
A- torsion
spleen of a dog
a) multifocal infarctions
b) lymphoma
c) lymphoid hyperplasia
d) any of the above
D- but in the book this was Mutifocal splenic infarctions and necrosis
nodules previously categorised as fibrohistiocytic nodules are now split in to other categories which are more specific to types of disease, name 2 categories
it was a very non- specific term when samples contained multiple types of cells: both neoplastic and non-neoplastic, including lymphoid nodular hyperplasia (LNH), complex nodular hyperplasia (CNH), marginal zone lymphoma, high grade B-cell lymphoma, splenic stromal sarcoma (SSS) and histiocytic sarcoma (HS)
top differential in a dog?
myelolipoma. can also get in cats
you find these lesions in the spleen, what is your differential?
a) extraskeletal osteosarcoma
b) emphysematous splenitis
c) dystrophic mineralisation
d) myelolipoma
e) a and c
E- a and c
what metabolic diseases are associated with this finding in the spleen? more than one
a) insulinoma
b) diabetes mellitus
c) diabetes insipidus
d) hyperadrenocorticism
e) hypoadrenocorticism
B, D and corticosteroid use
- Which condition is not associated with generalized splenomegaly and parenchymal heterogeneity?
A. Lymphoma
B. Acute splenic torsion
C. Benign lymphoid hyperplasia
D. Extramedullary haematopoiesis
B
- Which is NOT a common feature of histoplasmosis in the spleen of cats?
A. Diffuse mottled appearance
B. Splenomegaly
C. Hyperechoic spleen
D. Hypoechoic spleen
- C
