PMC8523671_01
T2-weighted (A,D), T1-weighted (B,E), short tau inversion recovery (STIR) (C), and T1-weighted contrast fat saturation (F) cervicothoracic images of a 9-year-old cat. On the sagittal T2-weighted and T1-weighted images (A and B, respectively), notice the homogenous reduction of signal intensity of the T2 vertebral body (arrow) relative to all other vertebrae. There was no abnormal hyperintense signal observed within the vertebral body on the STIR sagittal image (C). At the level of mid-body of the T2 vertebra, there was a symmetric, ventrally located, extradural lesion causing secondary spinal cord compression (asterisk, D-F). The lesion was isointense relative to spinal cord parenchyma on T2-weighted (D) and hyperintense on T1-weighted non-contrast images and T1-weighted contrast and fat saturation images (E,F, respectively).
fvets-08-752279-g0001.jpg
PMC8523671_01_fvets-08-752279-g0001.jpg
F1
T2-weighted signal intensity of the second thoracic vertebral body (T2) in comparison to normal bone (Figures 1A,B). There was no abnormal hyperintense signal observed within the vertebral body on short tau inversion recovery (STIR) (Figure 1C). The caudal aspect of the T2 vertebra was T1-hyperintense post gadopentetate administration. T2 vertebra, there was a symmetric, extradural lesion causing ventral spinal cord compression. The lesion was isointense relative to spinal cord parenchyma on T2-weighted and hyperintense on T1-weighted non-contrast images and T1-weighted contrast and fat saturation images (Figures 1D-F).
T2-weighted (A), T1-weighted (B), and T1-weighted fat suppression post-contrast (C) cervicothoracic images of the same cat 2 years after starting melphalan. On the sagittal T2-weighted and T1-weighted images (A,B, respectively), notice the isointense signal intensity of the T2 vertebral body (arrow) relative to all other vertebrae. The previously noted symmetric, ventrally located, extradural lesion causing secondary spinal cord compression at the level of mid-body of the T2 vertebra has resolved. There is no contrast enhancement on T1-weighted contrast fat saturation images (asterisk, E).
fvets-08-752279-g0002.jpg
PMC8523671_01_fvets-08-752279-g0002.jpg
F2
Magnetic resonance imaging of the cervicothoracic spine revealed resolution of previous abnormalities (Figure 2).
Fine needle aspirate of cutaneous tail base mass. The discrete cells are small to medium in size and round to slightly ovoid in shape. They generally contain a single round nucleus eccentrically set in a small abundant amount of dark blue cytoplasm that occasionally contains a few pink granules. The nuclei exhibit a coarsely granular chromatin pattern. Moderate anisocytosis is noted. Hematoxylin and eosin; x60 magnification; bar = 20 mum.
fvets-08-752279-g0003.jpg
PMC8523671_01_fvets-08-752279-g0003.jpg
F3
Fine needle aspiration of the tail base mass was consistent with plasma cell tumor (Figure 3).