Women who have had radiation treatment to the chest, especially at a young age, are advised to have routine breast cancer screening. Yearly MRI screening may begin 8 years after treatment or by age 25 years, whichever is later. The benefits and risks of mammograms and MRIs for these women have not been studied.RI is used as a screening test for women who have one or more of the following: 1  Certain gene changes, such as in the BRCA1 or BRCA2 genes. 2  A family history (first degree relative, such as a mother, daughter or sister) with breast cancer.
Innervation of the Pectoralis Minor. In order for a muscle to contract and function, it must receive electrical impulses from the brain through a nerve or group of nerves, a process that is called innervation. The pectoralis minor muscle is innervated by the medial pectoral nerve. The medial pectoral nerve contains nerve fibers from the eighth cervical nerve (C8), which comes from the spine in the lower part of the neck, and the first thoracic nerve (T1), which comes from the spine in the upper part of the back. Lesson Summary. The pectoralis minor muscle is a
Anatomy and supply. The pectoralis minor is a fan-shaped muscle of the shoulder girdle. It originates from the third to fifth ribs, and inserts on the coracoid process of the scapula. It is innervated by the medial and lateral pectoral nerves (C6-Th1), branches of the brachial plexus.