Following MRM parasthesia develops due to involvement of which nerve

.Complications of MRM/mastectomy * Injury/thrombosis of axillary vein * Seroma--50-70% * Shoulder dysfunction 10% * Pain (30%) and numbness (70%) * Flap necrosis/infection * Lymphoedema (15%) and its problems * Axillary hyperaesthesia (0.5-1%) * Winged scapula LYMPHANGIOSARCOMA (Stewa-Treve's 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