What is the typical size and shape of a lymph node in the breast?

The typical lymph node in the breast is generally recognized to be less than 2 cm in size and exhibits a kidney-shaped morphology. This description aligns with the anatomical characteristics of normal lymph nodes, which can vary somewhat in shape but usually do not present as round or irregular shapes. The kidney-shaped form allows for a more efficient filtering process of lymphatic fluid, which is vital for the immune response.

When considering the importance of lymph node evaluation in mammography and breast imaging, knowing the normal size and shape aids in distinguishing between benign and potentially malignant nodes. An understanding of these characteristics contributes to effective diagnosis and patient management. While there are variations and pathological conditions that can alter lymph node presentation, the typical healthy lymph node in the breast is best described by being less than 2 cm and kidney-shaped.