text: Other diagnostic<unk>  include rectal biopsy, barium enema, and anorectal manometry. A rectal biopsy, which will show an absence of ganglionic cells, is the gold standard confirmatory test for<unk> 's<unk> .
option_0: Hirschsprung's disease other diagnostic studies
option_1: Meckel's diverticulum differential diagnosis
option_2: Meckel's diverticulum other diagnostic studies
option_3: Pyloric stenosis differential diagnosis
option_4: Hirschsprung's disease other imaging findings
option_5: Hirschsprung's disease risk factors
option_6: Intussusception risk factors
option_7: Pyloric stenosis other imaging findings