My mother aged 70 years had taken ERCP treatment in February 2009 by Dr. Sood in Sir Ganga Ram Hospital. The Stricture found on neck of CBD pipe and cancerous. She is taking Ultracet 4 times in 24 hrs and other two tablets for gas and constipation for the last 5-6 months. Presently she is facing acute pain in stomach and backbone and getting no relief from tablets even taking injection of dynapar. Please suggest some doctor or treatment for relief from pain.