she keeps losing weight, the hematologist told my niece that there was no reason for her to have being sent to her because the blood count is normal ( a little arrogant) without checking other test results, thyroid test normal according to her Pediatrician, after more test are done if everything is negative a spinal tab is next, colonoscopy negative, ultra sound is next. Should she be seen by an Oncologist? we are desperate for answers.