My husband has had liomiosarcoma twice. Last time 15 years ago in the pancreas area and had a wipples procedure. He has lost almost a stone in weight recently and is now suffering from back ache and sickness. He often gets shaky and sweaty.when we last saw GP we were told to go away and see if weight loss continued.
Hi and welcome to ChatDoctorhe should do pet scan to verify tumor recurrence and check with hematologist for possible blood disorders.  Wish you good health. Regards