<prompt> Nipple inversion occurs due to involvement of:Coopers ligamentSubareolarm ductParenchyma of breastSubdermal lymphatics  <response>: Ans. b Subareolar ductRef: Bailey 25e p834 Peau- de orange - Subdermal Lymphatic infiltration T4b DimplingPuckeringtethering of skin - Due to Coopers ligament of breast involvement It is not skin involvement is T staging Nipple retraction - Fibrosis in and around the Subareolar duct 