6796 results
Meralgia paresthetica: Pathogenesis and Clinical Findings
Compression/injury of Lateral Femoral Cutaneous Nerve (LFCN) -> Meralgia paresthetica
 •
sensory • Before diagnosis ... rule out: focal mass ... reflexes), palpable mass ... MeralgiaParesthetica #MSK ... #differential #diagnosis
Osteoporosis: Pathogenesis and risk factors

 • Age > 30 (post-peak bone mass)
 • Post-menopausal women ->
post-peak bone mass ... pathophysiology #signs #symptoms ... #diagnosis
Osteosarcoma 
Most common primary malignant bone tumor in children 
Most Common Sites of Involvement:
1. Distal femur
injury • Systemic symptoms ... • Soft tissue mass ... #Osteosarcoma #Diagnosis
Retinoblastoma: Pathogenesis and clinical findings
 • Sporadic mutation -> One allele of RB1 tumor suppressor gene
Retinoblastoma Signs / Symptoms ... inflammation • Spheroid mass ... ophthalmology #diagnosis ... #signs #symptoms
Bone Lesion on X-Ray - Differential Diagnosis Algorithm 
Exostotic
 • Osteochondroma
Asymptomatic &/or Non-Active Bone Scam
 •
- Differential Diagnosis ... Constitutional Symptoms ... Sarcoma #Bony #Mass ... BoneLesion #XRay #MSK ... #Differential #Diagnosis
Congenital Adrenal Hyperplasia - 21-Hydroxylase Deficiency - Signs and Symptoms
 • Brain: Androgenization effects, Glucocorticoid effects,
Deficiency - Signs and Symptoms ... Increased fat mass ... Deficiency #Signs #Symptoms ... #diagnosis #endocrinology
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
and duration of symptoms ... angioedema Other symptoms ... Disorientation, vertigo Diagnostic ... Skin histology - Mast ... Cold #Urticaria #diagnosis
Signs and Symptoms Associated With Different Headache Etiologies
 • Nonfocal mental status changes - Meningitis, encephalitis,
Signs and Symptoms ... pressure cone, mass ... IV, and VI) - Mass ... headache #signs #symptoms ... #differential #diagnosis
There are 2 Major Types of Angioedema:
 - Mast cell / histamine mediated – usually presents
Angioedema: - Mast ... angioedema AND allergic symptoms ... WITHOUT allergic symptoms ... think ACEi #Diagnosis
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
- Differential Diagnosis ... cells per μL • Diagnosis ... lesions < 4cm + mass ... diameter - +mass ... #differential #diagnosis