Suffering extreme fatigue and loss of appetite following first chemo treatment for metastatic pancoast tumor. any guess how long this will last?

Few weeks to few Ms: As side effects for chemotherapy medications you will be having them . Also whether you are responding to the treatment or not , the symptoms persisting after will give an indication. Well responding tumours after minimum of 4-6 wks of therapy should be showing some improvement of appetite , less fatigue etc. Your oncolo. & pcp will be following you in this regard in addition to you watching wt.