Page 586 - Atlas of Small Animal CT and MRI

576 Atlas of Small Animal CT and MRI

Figure 5.7.5 Ectopic Splenic Tissue—Hematoma (Canine) CT
12y FS Pembroke Welsh Corgi with immune‐
mediated thrombocytopenia and previous
splenectomy. Images a and b are cranial to
images c and d. Several round, slightly irregu­
larly margined masses are present in the left
cranial abdomen. A normal spleen is not identi­
fied, and metallic staples are visible in this
region. One mass is centrally hypoattenuating
(a,b: open arrow) with peripheral hyperattenu­
ating tissue (a: white arrow) and contrast
enhancement (b: white arrow), suggesting
(a) CT, TP (b) CT, TP
central fluid or hemorrhage. The second mass is
more homogeneously soft‐tissue attenuating
(c: black arrow) with more uniform enhance­
ment (d: black arrow). Surgical excisional
biopsy revealed extramedullary hematopoiesis
and hematoma formation.

(c) CT+C, TP (d) CT+C, TP

Figure 5.7.6 Ectopic Splenic Tissue—Splenitis and Capsulitis (Feline) CT

(a) CT, TP (b) CT+C, TP (c) CT+C, TP
12y MC Domestic Shorthair with weight loss and anemia. Images b and c are ordered from cranial to caudal. There is a round, soft‐tissue
attenuating mass in the left dorsal abdomen (a: white arrow). The margin is indistinct on unenhanced images, and there is fat stranding
in the surrounding mesentery (a: open arrows). On contrast‐enhanced images, there is intense, peripheral enhancement of the mass (b:
black arrow) and uniform, moderate enhancement of the central region. A normal spleen was not identified. Excisional biopsy was
performed, and splenitis and capsulitis of the ectopic spleen were associated with acute pancreatitis.

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