Page 98 - Feline diagnostic imaging

6.3 ­iseases oo the Feline SSine 95

(a) (b) (c)

(d) (e) (f)

(g) (h)

Figure 6.19 A 4-year-old domestic shorthair presented unable to walk after being attacked by a dog. Radiographic images of the
skull showed a depression fracture of the dorsum of the calvarium and a transverse fracture of the right mandibular angle noted
on lateral (a), ventrodorsal (b), and oblique (c) images (arrows). Magnetic resonance imaging showed a penetrating wound with
fractures of the calvarium (arrows) noted on transverse FLAIR (d), T2*W (e), and postcontrast T1W images (f,g). Hyperintensity was
noted adjacent to the mandibular fracture on the T1W postcontrast image (arrow, h). Source: Images courtesy of Dr Merrilee
Holland, Auburn University.

extrusions (Hansen type I) at the thoracolumbar junction extrusions [85]. In contrast, another study found L2–3
and in the L4–6 spinal segments were more associated and then T11–12 to be most common in feline thora-
with neurologic signs [73,80]. In a review of case reports columbar disc herniations, and did not have one disc of
of feline IVDD, the L4–5 site was most common, followed the 33 identified at L4–5 [74]. Interestingly, one report
by L7–S1 and T13–L1 [63]. In another report, peak inci- found an association between higher body weight and
dence was found at L4–5 for Hansen type I disc or disc clinically significant lumbar IVDD [71].