<prompt> Following MRM parasthesia develops due to involvement of which nerveLong thoracic nerveMedial pectoral nerveBrachial cutaneous nerveThoracodorsal nerve  <response>: .Complications of MRMmastectomy Injurythrombosis of axillary vein Seroma--50-70 Shoulder dysfunction 10 Pain 30 and numbness 70 Flap necrosisinfection Lymphoedema 15 and its problems Axillary hyperaesthesia 0.5-1 Winged scapula LYMPHANGIOSARCOMA Stewa-Treves syndrome of upper limb can develop in patients who have developed lymphoedema after mastectomy with axillary clearance. Usually it occurs 3-5 years after development of lymphoedema. Such patient may require fore-quaer amputation. It has got poor prognosis. It presents as subcutaneous nodules.parasthesia develops due to the involvement of brachial cutaneous nerve. ref:SRB;s manual of surgery,ed 3,pg no 484 