Certified Surgical First Assistant (CSFA) Practice Test

Which lymph nodes are situated between the pectoralis major and minor muscles?

1. Axillary nodes

2. Supraclavicular nodes

3. Rotter's nodes

4. Infraclavicular nodes

The correct answer is: Rotter's nodes

Rotter's nodes are specifically located in the region between the pectoralis major and minor muscles. These lymph nodes are considered an important pathway for lymphatic drainage, particularly from the breast and the upper limb. They play a pivotal role in the staging and evaluation of breast cancer, as well as in the overall lymphatic system of the upper body. In contrast, the other types of lymph nodes mentioned serve different anatomical regions. The axillary nodes are found in the armpit region and provide drainage for the upper limbs and parts of the breast, the supraclavicular nodes are located above the clavicle and are significant in relation to the neck and upper thoracic area, and the infraclavicular nodes are situated below the clavicle. Therefore, while these nodes have distinct locations and functions, Rotter's nodes directly occupy the space specifically between the pectoralis muscles.