In Patey's procedure
|A||Removal of both pectoralis major & minor|
|B||Removal of pectoralis minor and preservation of pectoralis major|
|C||Pectoralis minor is divided|
|D||Both (major & minor) are preserved|
a. The modification is frequently limited to severance of the origin of the pectoralis minor muscle at the coracoid process of the scapula.
b. Subsequent to the description of the Patey modification, Madden advocated a modified radical mastectomy that preserved both the pectoralis major and minor muscles, even though this approach prevented complete dissection of the apical (level III) axillary lymph nodes