Loss of swallow tail sign in Parkinson disease

Case contributed by Dr. Reem Alketbi


Slowness, rigidity, and gait instability.

Patient Data

Age: 60 years old
Gender: Male

There is loss of the swallow tail sign in the posterior third of the substantia nigra.

Case Discussion

Illustrations courtesy of Dr. Afra Alfalahi

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Case information

rID: 54700
Published: 25th Jul 2017
Last edited: 27th Jul 2017
Inclusion in quiz mode: Included

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