CT findings of bilateral congenital absence of the long process of the incus.

Bilateral conductive deafness due to congenital absence of the long process of the incus (CALPI) is rare. The authors present the case of a patient with bilateral CALPI. To the best of our knowledge, this is the first reported case preoperatively diagnosed as bilateral CALPI by computed tomography. Multislice computed tomography is very useful for the diagnosis of minute abnormalities of the ossicles.