A 2-year-old child presented with recurrent pain abdomen, failure to thrive and iron deficiency anemia refractory to Iron therapy. His anti TTG anti-body titres were 300 U/L. An upper GI endoscopy was done and duodenal biopsy was taken which showed the following. What is the diagnosis?
Crohn disease Hirschsprung disease Celiac disease Congenital lactase deficiency