Differential diagnosis of chronic malabsorption diarrhea

Differential diagnosis of chronic  malabsorption diarrhea:
-reduced bile salt due to ileal resection,post cholecystectomy, Crohn’s disease
-bacterial overgrowth in diabetes
-pancreatic insufficiency such as chronic pancreatitis ,pancreatic cancer, cystic fibrosis
-lymphatic obstruction such as carcinoid, tuberculosis, carcinoid, mycobacterium avium complex, sarcoidosis, retroperitoneal fibrosis, kaposi’s sarcoma
-celiac sprue, tropical spure, Whipple’s disease, small bowel resection, eosinophilic gastroenteritis