What is a biopsy?

A biopsy is defined as the removal of living tissue for diagnostic examination. This procedure is integral in medical diagnostics, particularly when there is a suspicion of cancer or other diseases. During a biopsy, a small sample of tissue is extracted from the body and examined microscopically by a pathologist. This examination provides critical information about the nature of the tissue, allowing for accurate diagnosis and guidance for treatment.

The significance of a biopsy lies in its ability to provide definitive evidence about the health of the tissue in question. For example, in cases of suspected tumors, a biopsy can determine whether the cells are malignant (cancerous) or benign (non-cancerous), thereby assisting in making informed decisions about treatment options. This diagnostic tool is essential in various medical fields, including oncology, dermatology, and pathology, among others.

In contrast, the other options involve different medical procedures or tests that do not pertain to the direct examination of tissue for diagnostic purposes. Blood glucose tests monitor sugar levels, imaging tests visualize structures in the body, and screening tests aim to detect infectious diseases rather than assess tissue pathology through microscopic evaluation.