14 results
Reversed Halo Sign - Infectious and Non-Infectious Differential Diagnosis
Definition: A focal rounded area of GGO surrounded
Reversed Halo Sign ... Differential Diagnosis ... #Sign #Infectious ... NonInfectious #Differential ... #Diagnosis #pulmonary
Anaplasma Infection - Anaplasma phagocytophilum
Pathophysiology: 
 • Obligate, intracellular bacteria
 • Transmitted via blacklegged tick —
Anaplasma Infection ... phagocytophilum Pathophysiology ... scapularis • Infects ... within morulae Signs ... myalgias, shaking chills
Reverse Halo Sign
Defined as a central ground class opacity surrounded by a ring of dense consolidation
Differential
Reverse Halo Sign ... consolidation Differential ... Diagnosis: • Infection ... PulmPEEPs #Reverse #Halo ... #Sign #differential
Approach to Headaches - Differential Diagnosis Algorithm

Red flags (PHANTOMS):
 • Pattern change, progressively worse, papilledema
 •
• Neurological deficits ... • Meningeal signs ... Systemic symptoms and signs ... lesion • CNS infection ... Diagnosis #Algorithm #neurology
Cytomegalovirus (CMV) in HIV-AIDS Patients
Cytomegalovirus (CMV): double-stranded DNA virus, herpesvirus family.
CMV infection: virus isolation or detection
of symptoms or signs ... 50 or less: • Neurologic ... Pancreatitis • Pulmonary ... AIDS #diagnosis #differential ... #signs #symptoms
Uncommon Causes of Noncardiogenic Pulmonary Edema (NCPE) - Differential Diagnosis Framework

High Altitude Pulmonary Edema:
 • Accumulation
Edema (NCPE) - Differential ... • Signs/Symptoms ... • Signs/Symptoms ... - The classic signs ... edema #causes #differential
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
: • Recurrent infection ... Fevers and/or chills ... Nasal polyps and signs ... • Pulmonary artery ... #differential #
Differential diagnosis of the reversed halo sign (RHS). AIA, angioinvasive aspergillosis; AIS, adenocarcinoma in situ; COP,
Differential diagnosis ... of the reversed halo ... sign (RHS). ... pneumonia; PZ, pulmonary ... hypersensitivity pneumonitis, infection
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
Weakness - Differential ... disorder (Cardiac, pulmonary ... Lack of UMN/LMN signs ... #Weakness #Differential ... #Diagnosis #neurology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... Vasculitis Differential ... purpura: Strong sign ... the skin, neurologic ... cognitive impairment, neurologic