927 results
Mechanism of malignancy-associated hypercalcemia. Abbreviations: 1,25(OH)2D, 1,25-dihydroxyvitamin D; NHL, non-Hodgkin lymphoma; PTH, parathyroid hormone; PTHrP, PTH-related
Abbreviations: 1,25(OH ... non-Hodgkin lymphoma; PTH ... hormone; PTHrP, PTH-related
Hypocalcemia - Differential Diagnosis Algorithm - Low and High PTH
LOW PTH - Hypoparathyroid
 - Congenital (Pediatric)
- Low and High PTH ... LOW PTH - Hypoparathyroid ... Hypomagnesemia HIGH PTH ... - 25-OH D very ... anti-convulsants) - 25-OH
Calcium homeostasis is a process controlled by chiefly by hormones vitamin D and PTH. 
Vitamin D
vitamin D and PTH ... Both 25(OH)D and ... 1,25(OH)2D are ... PTH acts to increase ... #Homeostasis #PTH
5th metatarsal distal shaft fracture - Fracture detection on MSK ultrasound

The Ultrasound Site - MSK ultrasound
5th metatarsal distal ... Fracture detection on MSK ... Ultrasound Site - MSK ... shaft #fracture #MSK ... POCUS #Ultrasound #Clinical
Cubital Tunnel Syndrome: Pathogenesis and clinical findings

 • Paresthesia of 5th and medial half of 4th
Pathogenesis and clinical ... Paresthesia of 5th ... medial half of 4th ... signs #symptoms #msk
Hypercalcemia - Differential Diagnosis Algorithm
Elevated PTH (High or normal):
 • Primary Hyperparathyroidism
 • Familial Hypocalciuric Hypercalcemia
Low
Algorithm Elevated PTH ... Hypercalcemia Low PTH ... Calcitriol (1,25 OH
Hypercalcemia Evaluation
1) Clinical clues
 - Is the patient symptomatic?
 - Family history?
 - Have you done
Evaluation 1) Clinical ... 2) PTH - Frankly ... PTHrp • 25 OH ... VitD & 1,25 OH
Hypocalcemia - Differential Diagnosis Algorithm
 • Low Serum Mg: GI losses, Renal losses, Alcoholism, Malnutrition, Drug-Induced
Drug-Induced • Intact PTH ... Pseudohypoparathyroidism (PTH ... resistance) • Intact PTH ... • Low Serum 25-OH
Positive J-Sign - Maltracking Patella on Knee Physical Exam

The J sign correlates with poor patellar tracking
takes a J shaped path ... PhysicalExam #Patella #clinical ... #video #msk #orthopedics
Tinea Versicolor (Pityriasis versicolor) 
NOT a dermatophyte infection 
Caused by saprophytic, lipid-dependent yeasts 
Clinical 
 •
lipid-dependent yeasts Clinical ... Potassium hydroxide (KOH