Which structures are preserved in Scanlon’s modified radical mastectomy ?

Modified Radical Mastoidectomy (MRM) : 2 types – Auchincloss MRM : Both pectoralis major and minor are preserved with removal of level I and II axillary nodes only. Patey’s MRM : Pectoralis minor is removed with complete axillary clearance of nodes up to level III. - Scanlon’s modification of Patey’s MRM : Instead of removing pectoralis minor, the muscle is just divided to that level 3 nodes can be removed.