INTRODUCTION BREED INFORMATION HEALTH BUYING A PUPPY

          SYRINGOMYELIA (SM) - MRIs
(see Primer before looking at these)

Please note that although there can be SM whenever there is any malformation
whatsoever, after studying these MRIs there is no doubt that the more severe
the malformation is the more likely SM is to be present.  

No Malformation/No SM

    

L-about 3 years old    R-about 8 years old
No symptoms of SM

Little to no malformation
Little to no herniation of cerebellum
Cerebellums quite full with almost no pinching/squashing
Medulla almost normal
No syrinxes present

 


 

Mild Malformation/No SM

3 years old
No symptoms of SM
Mildest possible form of malformation, if any
Very mild herniation of cerebellum
Cerebellum about as full as a Cavalier's gets
Medulla almost normal
No syrinxes present

8 years old
No symptoms of SM whatsoever
Very mild malformation, slight squashing/pinching of cerebellum
No herniation
Medulla almost normal
Very slight dilatation of central canal in one tiny area
 

3 years old
No symptoms of SM
Mild malformation, slight squashing/pinching of cerebellum
Probable mild dilatation of the central canal
Medulla kinked/squashed
You can also see the vertebrae.  They are the white lines that look almost like pointers
underneath the spinal cord.  Three are visible.
One (C1) is below the cerebellum where the spinal cord begins
The other two are further back--C2 and C
3

6 years old
No symptoms of SM
Mild malformation, just slightly compressed cerebellum
Medulla kinked/squashed
No syrinxes present

1.5 years old
No symptoms of SM
Mild malformation, cerebellum slightly squashed
Herniation of cerebellum
Medulla squashed/kinked
No syrinxes
 

1.5 years old
No symptoms of SM
Mild to Moderate Malformation, cerebellum moderately squashed
Herniation of cerebellum
Medulla squashed/kinked
No syrinxes

Age Unknown
No symptoms of SM
Mild to Moderate Malformation, cerebellum moderately squashed
Herniation of cerebellum
Medulla squashed/kinked
No syrinxes

Age Unknown
No symptoms of SM
Moderate Malformation, cerebellum moderately squashed
Herniation of cerebellum
Medulla squashed/kinked
No syrinxes

3 years old
No symptoms of SM
Mild hydrocephalus
Moderate Malformation, cerebellum moderately squashed
Very slight herniation of cerebellum
Medulla squashed/kinked
No syrinxes

 


 

Malformation/Mild SM

Age Unknown
No symptoms whatsoever
Moderate malformation, moderate squashing/pinching of cerebellum
Mild Herniation of cerebellum
Medulla kinked/squashed
Narrow syrinx starting at C2

Age Unknown
No symptoms whatsoever
Mild to Moderate Malformation, mild to moderate squashing/pinching of cerebellum
Herniation of cerebellum
Medulla quite kinked/squashed
One moderate sized syrinx starting at C2 and one small syrinx


 

Malformation/Moderate to Severe SM 

1.5 years old
Symptoms:  Scoliosis, head tilt, scratching, right front paw/leg very weak
Mild malformation, mild squashing/pinching of cerebellum
Herniation of cerebellum
Medulla kinked/squashed
Syrinx beginning near brain (before C2) and continuing all the way back
Mild hydrocephalus

Age Unknown
Some mild symptoms of SM including scratching
Moderate malformation/squashing of cerebellum
Herniation of cerebellum
Medulla kinked/squashed
Large syrinx starting just before C2
Mild hydrocephalus
 

2 years old
Had SM symptoms and has since had surgery
Moderate malformation/squashing of cerebellum
Herniation of cerebellum
Medulla kinked/squashed
Large syrinx starting just beyond C1
 

Age Unknown
Moderate malformation/squashing of cerebellum
Herniation of cerebellum
Medulla kinked/squashed
Syrinxes the entire length of the spinal cord, some very large

7 years old
Mild weakness in one leg that could be due to SM
Moderate to severe malformation/squashing of cerebellum
Slight herniation of cerebellum
Medulla kinked/squashed
Syrinx beginning near brain (before C2) and continuing all the way back
 

Age Unknown
Symptoms Unknown
Severe Malformation, severe squashing of cerebellum
Mild herniation of cerebellum
Medulla quite kinked/squashed
One small syrinx by C1, starting before C2, huge syrinx that continues all the way back
Mild hydrocephalus

3 years old
Symptoms of SM started at 3 years of age
Severe malformation, severe squashing/pinching of cerebellum
Medulla quite kinked/squashed
Several syrinxes, some quite large, beginning after C2 vertebrae
Moderate Hydrocephalus
 

 

                               

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