Lateral wall of mastoid antrum is related to ?
Superficial temporal aery
External auditory canal
Emissary vein
Meningeal aery
MacEwen's triangle or suprameatal triangle overlies the lateral wall of mastoid antrum. It is bounded above by supramastoid crest, anteroinferiorly by posterosuperior margin of external auditory canal and posteriorly by a tangent drawn from zygomatic arch.