45 results
Causes of Hypercalcemia
Parathyroid gland structure-related
 • Primary hyperparathyroidism
 • Parathyroid adenoma
 • Parathyroid hyperplasia
 • Parathyroid
Causes of Hypercalcemia ... Parathyroid gland ... prostate (release of calcitriol ... Hypercalcemia #Causes ... endocrinology #diagnosis
Workup of Hypercalcemia - Differential Diagnosis Algorithm
High or Normal PTH:
 • Hyperparathyroidism: Parathyroid adenoma, Parathyroid hyperplasia,
- Differential Diagnosis ... adenoma, Parathyroid ... hyperplasia, Parathyroid ... diseases, Idiopathic calcitriol ... #Differential #Diagnosis
Hypomagnesemia (Serum level < 1.7 mg/dL)
Neuromuscular manifestations 
 • Tremor, tetany, seizures 
 • Weakness
Hypoparathyroidism • Parathyroid ... Decreased synthesis of calcitriol ... Signs #Symptoms #Diagnosis
Causes of Hypercalcemia
Parathyroid hormone–dependent
Primary hyperparathyroidism
Familial hypocalciuric hypercalcemia
Lithium-associated
Tertiary hyperparathyroidism
Genetic disorders (e.g., multiple endocrine neoplasia type 1 or
Causes of Hypercalcemia ... Parathyroid hormone–dependent ... Neoplasms - Parathyroid ... Hypercalcemia #Causes ... #Differential #Diagnosis
Pseudogout: pathogenesis and clinical findings
 - Idiopathic (vast majority of cases) -> Mechanism unknown
 - Familial
vast majority of cases ... Incr levels of parathyroid ... pyrophosphate dihydrate (CPPD ... and/or x-ray - CPPD ... Pathophysiology #Diagnosis
Hypercalcemia - Differential Diagnosis Algorithm
Elevated PTH (High or normal):
 • Primary Hyperparathyroidism
 • Familial Hypocalciuric Hypercalcemia
Low
- Differential Diagnosis ... PTH: • Elevated Calcitriol ... #Differential #Diagnosis ... #Algorithm #causes
Pathogens in Pneumonia

Here is a quick review of the pathogens causing pneumonia (useful for enumerating differentials
your grand rounds/cases ... H. influenzae (COPD ... Pseudomonas — COPD ... #Microbiology #Causes ... #Agents #Diagnosis
Hypocalcemia - Differential Diagnosis Algorithm
 • Low Serum Mg: GI losses, Renal losses, Alcoholism, Malnutrition, Drug-Induced
- Differential Diagnosis ... Destruction of parathyroid ... sunlight • Other Causes ... #Differential #Diagnosis ... #Algorithm #causes
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Causes of Chronic ... - Differential Diagnosis ... • Asthma • COPD ... #Differential #Diagnosis ... #Algorithm #Causes
Dyspnea - Differential Diagnosis Framework

Cardiovascular Causes of Dyspnea:
 • Myocardium:
	- Heart failure
	- CAD/ACS
	- Valvulopathy
 • Electrical:
	-
- Differential Diagnosis ... Cardiovascular Causes ... - Asthma - COPD ... #differential #diagnosis ... #causes #pulmonary