Sylvian triangle = A triangle formed by branches of MCA within sylvian fissure on outer surface of insula (form a loop) upon reaching the upper margin of the insula.
Anatomically it is demarcated by the superior insular line ( A line tangent to the tops of the insular loops), The main MCA trunk ( forms the posterior inferior margin of the triangle) and the most anterior branch of the ascending frontal complex ( forms the anterior border of the triangle)
It is seen in lateral view and serves as angiographic landmark for localizing supratentorial masses.
Schlesinger in 1953 identified and publicized this.
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