Final answer:
The internal acoustic meatus and external acoustic meatus are common sites for congenital cholesteatomas, which are related to the anatomy of the temporal bone in the skull.
Step-by-step explanation:
The most common sites of congenital cholesteatoma are associated with the anatomy of the temporal bone within the skull. An important opening, known as the internal acoustic meatus, is found in the medial wall of the petrous ridge in the posterior cranial fossa and facilitates the passage of nerves from the hearing and equilibrium organs of the inner ear, as well as the facial muscles nerve. The petrous part of the temporal bone, where the internal acoustic meatus is located, connects to the middle and inner ear cavities, and it is in these areas that congenital cholesteatomas can often be found. Another significant landmark is the external acoustic meatus (ear canal), a large opening associated with the ear on the lateral side of the skull, which can also be a site for congenital cholesteatomas, especially as they involve the structure and integrity of the ear.