The use of a Dorsey needle is appropriate for which type of procedure?

The Dorsey needle is specifically designed for use in procedures that require access to deeper tissues, such as those found in the central nervous system. This type of needle is equipped to collect tissue samples that are difficult to access safely and accurately. In the context of a cerebral tissue biopsy, the Dorsey needle is particularly useful because it can penetrate through the skull and into brain tissue, allowing for the collection of cellular samples necessary for diagnoses related to neurological conditions.

The other types of biopsies mentioned—skin, bone marrow, and cardiac tissue—require different tools and techniques best suited for their specific site requirements. For instance, skin biopsies typically utilize simpler punch or excisional biopsies, while bone marrow biopsies use specially designed needles that can navigate to the medullary cavity. Cardiac tissue biopsies often require catheters and specific cardiac biopsy forceps. Thus, the Dorsey needle's design and function align more closely with the complexities involved in accessing brain tissue.