Learning objectives
To describe 30 classic signs in neuroradiology.
To provide illustrations of these signs.
To discuss the pertinent features related to each sign with emphasis on the cause of the appearance of these signs,
and the differential diagnoses to be considered.
Background
Classic signs in radiology,
when invoked,
immediately bring an image to mind and add confidence to the diagnosis of certain conditions.
This presentation reviews 30 classic signs in neuro radiology.
The authors discuss the most important features related to each sign and provide illustrations of these signs using different modalities.
The authors also address the differential diagnoses.
Findings and procedure details
1.“Banana sign” :
The banana sign is found in cases of defective neural tube,
particularly in Arnold-Chiari II malformation.
In such cases,
the posterior fossa is small,
and the cisterna magna loses its typical configuration.
There is herniation of the brainstem and cerebellar tonsils through the foramen magnum,
with the cerebellum surrounding the brainstem with a curved shape of a banana.
Ultrasonography image acquired at the second gestational trimester,
at the level of the posterior fossa.
Observe the abnormal appearance of the cerebellum,
surrounding the...
Conclusion
Radiology signs play an extremely relevant role in the decision making process,
in the identification of differential diagnosis and in the achievement of a more accurate specific diagnosis.
In spite their degree of specificity,
signs may be useful in the building of a more relevant and to further narrow the differential diagnosis list.
Personal information
Dr.F.Abuabacker Sulaiman,
MD.RD
Associate Professor
Department of Radiology and Imaging Sciences
Chettinad Hospital and Research Institute
Kelambakkam
Kanchipuram District
Tamilnadu-603103
India
Dr.M.Praveen Kumar
2nd year Post graduate student
Department of Radiology and Imaging Sciences
Chettinad Hospital and Research Institute
Kelambakkam
Kanchipuram District
Tamilnadu-603103
India
Dr.G.
Preethi
1st year Post graduate student
Department of Radiology and Imaging Sciences
Chettinad Hospital and Research Institute
Kelambakkam
Kanchipuram District
Tamilnadu-603103
India
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