Page 591 - Atlas of Small Animal CT and MRI

Spleen 581

Figure 5.7.15 Splenic Metastasis (Canine) CT
9y MC Labrador Retriever with cutaneous
hemangiosarcoma. There are ill‐defined, mildly
hypoattenuating masses in the proximal
extremity of the spleen, which are nonenhanc­
ing centrally with mild peripheral enhance­
ment (b: arrows). Histology was performed
after splenectomy, and a diagnosis of meta­
static hemangiosarcoma was made.

(a) CT, TP (b) CT+C, TP

Figure 5.7.16 Extramedullary Hematopoiesis (Canine) CT

(a) CT, TP (b) CT+C, TP (c) CT+C, TP
12y FS Labrador Retriever with splenic nodules. Images b and c are ordered from cranial to caudal. There are moderately contrast‐
enhancing, well‐defined nodules within the splenic parenchyma (b,c: arrows). The nodules are not well visualized on the unenhanced
image (a). The nodules were diagnosed as extramedullary hematopoiesis on histopathology.

Figure 5.7.17 Extramedullary Hematopoiesis (Canine) CT

13y FS Brittany Spaniel with a splenic mass.
There is a heterogeneous mass in the proximal
extremity of the spleen, deforming the capsule.
On the contrast‐enhanced image, the mass is
moderately, heterogeneously enhancing (b:
arrows). Extramedullary hematopoiesis was
diagnosed by fine‐needle aspiration cytology.

(a) CT, TP (b) CT+C, TP
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