Abdominal pain, nausea,vomiting and weight loss

Abbreviations: RUQ= Right upper quadrant of the abdomen, LUQ= Left upper quadrant, LLQ= Left lower quadrant, RLQ= Right lower quadrant, LFT= Liver function test, SIRS= Systemic inflammatory response syndrome, ERCP= Endoscopic retrograde cholangiopancreatography, IV= Intravenous, N= Normal, AMA= Anti mitochondrial antibodies, LDH= Lactate dehydrogenase, GI= Gastrointestinal, CXR= Chest X ray, IgA= Immunoglobulin A, IgG= Immunoglobulin G, IgM= Immunoglobulin M, CT= Computed tomography, PMN= Polymorphonuclear cells, ESR= Erythrocyte sedimentation rate, CRP= C-reactive protein, TS= Transferrin saturation, SF= Serum Ferritin, SMA= Superior mesenteric artery, SMV= Superior mesenteric vein, ECG= Electrocardiogram

Disease Clinical manifestations Diagnosis Comments Symptoms Signs Abdominal Pain Fever Rigors and chills Nausea or vomiting Jaundice Constipation Diarrhea Weight loss GI bleeding Hypo- tension Guarding Rebound Tenderness Bowel sounds Lab Findings Imaging Chronic pancreatitis Epigastric − − ± ± − + + − − − − N Increased amylase / lipase Increased stool fat content Pancreatic function test CT scan Calcification Pseudocyst Dilation of main pancreatic duct Predisposes to pancreatic cancer Pancreatic carcinoma Epigastric − − + + − + + − − − − N ↑ Alkaline phosphatase ↑ serum bilirubin ↑ gamma-glutamyl transpeptidase ↑ CA 19-9  MDCT with  PET/CT MRI Skin manifestations may include: Bullous pemphigoid Cicatricial pemphigoid Migratory superficial thrombophlebitis (classic Trousseau's syndrome) Pancreatic panniculitis Peptic ulcer disease Diffuse ± − + − − − + Gastric ulcer- melena and hematemesis Duodenal ulcer- melena and hematochezia Positive if perforated Positive if perforated Positive if perforated N Ascitic fluid LDH > serum LDH Glucose < 50mg/dl Total protein > 1g/dl Air under diaphragm in upright CXR Upper GI endoscopy for diagnosis Gastritis Epigastric ± − + − − − Positive in chronic gastritis + − − − N H.pylori infection diagnostic tests Endoscopy H.pylori gastritis guideline recommendation Gastric outlet obstruction Epigastric − − ± − − − + − − − − Hyperactive Complete blood count Basic metabolic panel Abdominal x-ray- air fluid level Barium upper GI studies- narrowed pylorus Succussion splash Gastroparesis Epigastric − − + − − − + − ± − − Hyperactive/hypoactive Hemoglobin Fasting plasma glucose Serum total protein, albumin, thyrotropin (TSH), and an antinuclear antibody (ANA) titer HbA1c Scintigraphic gastric emptying Succussion splash Single photon emission computed tomography (SPECT) Full thickness gastric and small intestinal biopsy Dumping syndrome Lower and then diffuse − − + − − + + − + − − Hyperactive Glucose challenge test Hydrogen breath test Upper GI series Gastric emptying study Postgastrectomy Disease Abdominal Pain Fever Rigors and chills Nausea or vomiting Jaundice Constipation Diarrhea Weight loss GI bleeding Hypo- tension Guarding Rebound Tenderness Bowel sounds Lab Findings Imaging Comments Viral hepatitis RUQ + − + + − Positive in Hep A and E + − Positive in fulminant hepatitis Positive in acute + N Abnormal LFTs Viral serology US Hep A and E have fecal-oral route of transmission Hep B and C transmits via blood transfusion and sexual contact. Liver abscess RUQ + + + + − ± + − + + ± Normal or hypoactive CBC Blood cultures Abnormal liver function tests US CT Small bowel obstruction Diffuse + − + − + − + − + + ± Hyperactive then absent Leukocytosis with left shift indicates complications Abdominal X ray Dilated loops of bowel with air fluid levels Gasless abdomen "Target sign"– , indicative of intussusception Venous cut-off sign" – suggests thrombosis Mesenteric ischemia Periumbilical Positive if bowel becomes gangrenous − + − − + + + Positive if bowel becomes gangrenous Positive if bowel becomes gangrenous − Hyperactive to absent Leukocytosis and lactic acidosis Amylase levels D-dimer CT angiography SMA or SMV thrombosis Also known as abdominal angina that worsens with eating Acute ischemic colitis Diffuse + ± + − − + + + + + + Hyperactive then absent Leukocytosis Abdominal x-ray Distension and pneumatosis CT scan Double halo appearance, thumbprinting Thickening of bowel May lead to shock Ruptured abdominal aortic aneurysm Diffuse ± − + − − − + + + − − N Fibrinogen D-dimer Focused Assessment with Sonography in Trauma (FAST)  Unstable hemodynamics