There are several different muscles in the chest, each with their own name. A few of them are pectoralis major, pectoralis minor, the intercostals, the serratus anterior.
Pectori
Pectus carinatum is the medical term meaning pigeon chest.
Dystonia is the medical term meaning bad muscle tone.
Contraction is the medical term meaning the normal shortening or tightening of a muscle.
Myoanatomy is the medical term meaning structure of a muscle. It may also mean the study of muscle structure.
Pectus excavatum is the medical term meaning sunken-in chest.Pneumothorax
Dystonia is a medical term meaning abnormal muscle tone.
Myopathy is the medical term meaning disease of the muscle. my/o- muscle; pathy-disease
Mastitis is the medical term meaning inflammation of the breast.
No such specific medical term
Cancer
Myocardial infarction is the medical term meaning damage to the heart muscle.
muscle hypertrophy