<prompt> Treatment of carcinoma left colon with acute obstructionHarmans procedureLeft colectomy with anastomosisProximal colostomyExtended . colectomy with ileoanal anastomosis  <response>: .Obstruction due to rectosigmoid growth with patient being severely ill--Hamanns operation can be done to save the life of the patient wherein distal stump after removal of the growth is closed, proximal colon is brought out as end colostomy. ref:SRB;s manual of surgery,ed 3,pg no 857 