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​Symptoms and Signs – Differential Diagnosis of Heel Pain, Plantar Aspect, 
• Tumor
• Tarsal tunnel syndrome
• Plantar fasciitis
• Plantar fascia rupture
• Peripheral vascular insufficiency
• Osteoarthritis
• Neuropathy
• Neuroma
• Infection (osteomyelitis, septic arthritis, cellulitis) of foot
• Heel pad atrophy
• Gout, pseudogout
• Fracture
• Bone cyst
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​Symptoms and Signs – Differential Diagnosis of Posterior Heel Pain 
• Tumor
• Retrocalcaneal bursitis
• Retroachilles bursitis
• Peripheral vascular insufficiency
• Osteoarthritis
• Neuropathy
• Infection (osteomyelitis, septic arthritis, cellulitis) of foot
• Gout, pseudogout
• Fracture
• Achilles tendinitis
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​Symptoms and Signs – Differential Diagnosis of Palindromic Rheumatism
• Whipple’s disease
• Sarcoidosis
• Reactive arthritis (rare)
• Palindromic rheumatoid arthritis
• Lyme borreliosis, stages 2 and 3
• Essential palindromic rheumatism
• Crystal synovitis (gout, calcium pyrophosphate dihydrate [CPPD], pseudogout, calcific periarthritis) 
• Acute rheumatic fever
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​Symptoms and Signs – Differential Diagnosis of Palpitations
• Wolff-Parkinson-White (WPW) syndrome
• Sick sinus syndrome
• Mitral valve prolapse
• Medications (digoxin, β-blockers, calcium channel antagonists, hydralazines, diuretics, minoxidil)
• Ischemic heart disease
• Ingestion of stimulant drugs (cocaine, amphetamines, caffeine)
• Hypoglycemia in type 1 diabetes mellitus (DM)
• Hyperthyroidism
• Exercise
• Electrolyte abnormalities (hypokalemia, hypomagnesemia)
• Anxiety
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​Symptoms and Signs – Differential Diagnosis of Pancreatic Calcifications
• Pseudocyst
• Metastatic neoplasm
• Hyperparathyroidism
• Hereditary pancreatitis
• Hemorrhage
• Cystadenoma
• Cystadenocarcinoma
• Chronic pancreatitis
• Cavernous lymphangioma
• Acute pancreatitis (saponification)
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​Symptoms and Signs – Differential Diagnosis of Pancreatic Cancer (Exocrine)
• Sclerosing cholangitis
• Sarcoidosis
• Primary biliary cirrhosis
• Other pancreatic tumors (islet cell tumor, cystadenocarcinoma, epidermoid carcinoma, sarcomas, lymphomas)
• Drug-induced cholestasis (e.g., phenothiazines)
• Common duct stricture
• Common duct cholelithiasis
• Chronic hepatitis
• Cholangiocarcinoma
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​Symptoms and Signs – Differential Diagnosis of Acute Pancreatitis 
• Ruptured or dissecting aortic aneurysm
• Renal colic
• Pneumonia (basilar)
• Peptic ulcer disease (PUD)
• Myocardial infarction (inferior wall)
• Mesenteric vascular obstruction
• High intestinal obstruction
• Early acute appendicitis
• Diabetic ketoacidosis (DKA)
• Acute cholangitis, biliary colic
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