9 results
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Compatible syndrome + MRI ... lung nodules, may also ... #Brain #differential ... #diagnosis #causes ... #radiology #neurology
Maculopapular - Diagnostic Algorithm
Pathophysiology:
- Catch-all term with a wide range of potential pathophysiologic mechanisms and causative
Maculopapular - Diagnostic ... or fluid-filled lesions ... #Dermatology #Rash ... Targetoid #Algorithm #Differential ... #Ddxof
Wellens' Sign: LAD-T Wave Inversion 
Life threatening T wave inversions in precordial leads. Often V2-V3 
Specific
anterior wall MI ... 'widow maker' lesion ... without chest pain, as ... EKGS in pts are crucial ... #Diagnosis #Cardiology
Petechiae/Purpura - Diagnostic Algorithm. Pathophysiology: 1) Represent the passage of erythrocytes from the intravascular to extravascular
Petechiae/Purpura - Diagnostic ... Palpable: 1) If lesions ... #Dermatology #Rash ... Palpable #Algorithm #Differential ... #Ddxof
Amyotrophic Lateral Sclerosis (ALS) Summary
ALS: combination of the clinical examination finding of amyotrophy with the pathologic
multiple spinal cord regions ... EMG: LMN Signs in ... least two or more regions ... MRI: Brain, cervical ... conditions listed in differential
BEE Syndromes - Non-inflammatory Causes

Immune-mediated conditions affecting the Brain, Eye, and Ear

Visual or auditory symptoms in
affecting the Brain ... is important, as ... neuropathy (LHON) plus MRI ... lesions and clinical ... noninflammatory #differential
SAPHO Syndrome Summary

What?
SAPHO syndrome is a rare chronic inflammatory disorder of bone, joint, and skin characterized
Pustular skin lesions ... • A clinical diagnosis ... - MRI: inflammation ... antiinflammatory properties e.g ... #Dermatology
Posterior Reversible Encephalopathy Syndrome (PRES) Overview

Clinico-Radiological Syndrome, characterized by:
 • Headache
 • Seizures
 • Altered mental
parietal lobes of the brain ... edema visualized as ... showing cortical lesions ... Reversible course Differential ... parietal lobes of the brain
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
to have a "wood-grain ... • This one is also ... classic targetoid lesions ... comparison #table #differential ... #diagnosis #dermatology