101 results
Workup of Hypercalcemia - Differential Diagnosis Algorithm
High or Normal PTH:
 • Hyperparathyroidism: Parathyroid adenoma, Parathyroid hyperplasia,
Differential Diagnosis Algorithm ... Normal PTH: • Hyperparathyroidism ... : Parathyroid adenoma ... , Parathyroid carcinoma ... Differential #Diagnosis #Algorithm
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 ... Primary hyperparathyroidism ... hypocalciuric hypercalcemia ... #Causes #Differential
Hypocalcemia Laboratory Evaluation

Serum levels of PTH, phosphorus, 25-hydroxyvitamin D, and 1,25-dihydroxyvitamin D can help differentiate between
Hypocalcemia Laboratory ... disorders causing hypocalcemia ... : - Hypoparathyroidism ... activating mutation - Parathyroid ... Laboratory #Levels #Hyperparathyroidism
Causes of Hypercalcemia
Parathyroid gland structure-related
 • Primary hyperparathyroidism
 • Parathyroid adenoma
 • Parathyroid hyperplasia
 • Parathyroid
Causes of Hypercalcemia ... structure-related • Primary hyperparathyroidism ... hypocalciuric hypercalcemia ... disease • Tertiary hyperparathyroidism ... #Causes #endocrinology
Hypocalcemia - Differential Diagnosis Algorithm
 • Low Serum Mg: GI losses, Renal losses, Alcoholism, Malnutrition, Drug-Induced
Hypocalcemia - Differential ... Diagnosis Algorithm ... Destruction of parathyroid ... sunlight • Other Causes ... #causes
Hypercalcemia Evaluation Algorithm 

(PTH = parathyroid hormone; PTHrp: parathyroid hormone–related peptide.)

#Hypercalcemia #Evaluation #Algorithm #Diagnosis
Hypercalcemia Evaluation ... Algorithm (PTH ... = parathyroid hormone ... ; PTHrp: parathyroid ... #Hypercalcemia #
Causes of Hypercalcemia - Differential Diagnosis Algorithm
 • Primary Hyperparathyroidism 
 • Possible Familial Hypocalciuric Hypercalcemia
Causes of Hypercalcemia ... Differential Diagnosis Algorithm ... • Primary Hyperparathyroidism ... Differential #Diagnosis #Algorithm ... #Causes #endocrinology
Causes of Hypercalcemia
Hypercalcemia due to increased bone Ca2+ resorption:
 • Primary hyperparathyroidism, Malignancy, Pseudohyperparathyroidism, Renal failure,
Causes of Hypercalcemia ... Hypercalcemia ... resorption: • Primary hyperparathyroidism ... Immobilization Hypercalcemia ... #Causes #differential
Hypercalcemia - Differential Diagnosis Algorithm
Primary Hyperparathyroidism
 • Adenoma
 • Hyperplasia
 • MEN 1 and 2A
Tertiary Hyperparathyroidism
Differential Diagnosis Algorithm ... Primary Hyperparathyroidism ... and 2A Tertiary Hyperparathyroidism ... long-standing secondary hyperparathyroidism ... Differential #Diagnosis #Algorithm
Hypomagnesemia (Serum level < 1.7 mg/dL)
Neuromuscular manifestations 
 • Tremor, tetany, seizures 
 • Weakness
metabolism • Hypocalcemia ... • Hypoparathyroidism ... • Parathyroid ... Hypomagnesemia #Signs