| Type | MGI:General | Description | at 3 weeks to 11 months, 19 of 50 heterozygous ears exhibit complete truncation of the non-ampullated end of the LSCC, with canal length varying from >50% of the expected circumference to no more than a tiny bud off the ampulla in others, LSCCs appear as complete patent loops of reduced diameter, resulting in a more circular morphology (18 of 50 ears), with significant variability noted in the diameter of the arc of the canal and of the canal lumen some LSCCs, display a point of luminal narrowing along their arcs which resembles a bird's beak (13 of 50 ears), most commonly found at the non-ampullated end of the canal this constriction is mild in some cases, but in others, the connection between the non-ampullated end and the vestibule is narrow |
