Wallach's Interpretation of Diagnostic Tests: Pathways to Arriving at a Clinical Diagnosis (149 page)

   Drugs (e.g., antibiotics, antihypertensive, antiarrhythmic, antineoplastic, colchicine, cholestyramine; see previous section on acute diarrhea.)

   Laxative abuse, factitious

   Endocrine (e.g., DM, adrenal insufficiency, hyperthyroidism, hypothyroidism)

   Hormone-producing tumors (e.g., gastrinoma, VIPoma, villous adenoma, medullary thyroid carcinoma, pheochromocytoma, ganglioneuroma, carcinoid tumor, mastocytosis, somatostatinoma, ectopic hormone production by lung or pancreas carcinoma)

   Injury caused by radiation, ischemia, and so on

   Infiltrations (e.g., scleroderma, amyloidosis, lymphoma)

   Colon carcinoma

   Previous surgery (e.g., gastrectomy, vagotomy, intestinal resection)

   Immune system disorders (e.g., systemic mastocytosis, eosinophilic gastroenteritis)

   Intraluminal maldigestion (bile duct obstruction, pancreatic exocrine insufficiency)

   Celiac sprue

   Whipple disease

   Abetalipoproteinemia