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Fig 1. Intracochlear schwannoma in the BT and anterior SecT of the left cochlea. Axial Gd-enhanced T1-weighted images (A and B) and heavily T2-weighted DRIVE images (C and D) through the BT (A and C) and ST (B and D) and parasagittal DRIVE reconstruction (E). A, Enhancing schwannoma in BT (white arrow). B, Extending into anterior part of SecT (white arrowhead). C, Schwannoma anteriorly in both scalae of the BT (white arrow) and posteriorly in the ST of the BT (double gray arrowhead). Normal fluid in posterior SV (gray arrow): schwannoma occupies ST more than SV. Normal fluid in posterior semicircular duct (gray arrowheads). D, Anterior parts of both scalae of SecT were occupied (white arrowhead). Normal fluid in SV (gray arrowhead) and ST (double white arrowhead) of posterior SecT. E, Schwannoma in BT and anterior part of SecT (white arrowheads). Fluid signal intensity still present near the round window (gray arrow) and posterior part of ST (gray arrowhead). A indicates anterior; P, posterior; SecT, second turn of cochlea; BT, basal turn of cochlea; ST, scala tympani; SV, scala vestibuli.
