Basal-cell carcinomas predominated on the posterior surface of the ear; elsewhere, epidermoid carcinomas were more common. Figure 1 Four Sites of Origin of Carcinomas of the Pinna. The more ...

The ear can detect a time difference as slight as 30 microseconds ... Time delays of reflections from the ridges of the pinna. The first chart (left) shows the delays (in microseconds) caused by ...

Ear (aural) hematomas occur when blood vessels in the pinna rupture secondary to trauma or excessive head shaking. Blood fills the space between the skin and the cartilage, causing pain and ...