Dr. Gerald Diaz @GeraldMD
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Board Certified Internal Medicine Hospitalist, GrepMed Editor in Chief πŸ‡΅πŸ‡­ πŸ‡ΊπŸ‡Έ - Sign up for an account to like, bookmark and upload images to contribute to our community platform. Follow us on IG: https://www.instagram.com/grepmed/ | Twitter: https://twitter.com/grepmeded/
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Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... : reticular, nodular ... , high and low attenuation ... (table). ... #Differential #
Lymphomas and Lymphoproliferative Disorders - Differential Diagnosis Algorithm
Hodgkin Lymphoma ~40% - Characteristic For Reed-Sternberg (RS) Cells
Diagnosis Algorithm ... involvement, irregular pattern ... B-Cell ~90% β€’ Low ... Lymphoproliferative #Disorders #Classification ... #algorithm
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular ... pattern The algorithm ... are visible, the pattern ... Pulmonary #HRCT #CTChest ... #Nodules #Differential
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
pattern. 1. ... Radiology #Pulmonary #CTChest ... #Nodular #Pattern ... NodularPattern #Differential ... #Comparison #Table
Hypokalemia Differential Diagnosis Algorithm

Low intake 
β€’ poor oral intake 

Renal loss 
β€’ Medication 
β€’ Hypomagnesemia 
β€’
Hypokalemia Differential ... Diagnosis Algorithm ... Low intake ... #Diagnosis #Algorithm ... #Causes #Classification
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Hypokalemia - Differential ... Mineralocorticoid excess - Renal ... #Diagnosis #Low ... #Potassium #Table ... #Classification
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
diarrhea / IBD Renal ... Hypomagnesemia #Differential ... #Diagnosis #Low ... #Magnesium #Table ... #Classification
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
coagulopathy) β€’ CBC w differential ... non-specific, ESR usually low ... hematuria, RBC casts, low ... β€’ IF staining patterns ... #Syndromes #differential
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... can be high or low ... Primary polydipsia), Low ... #Hyponatremia #differential ... #diagnosis #table
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
the dominant HR-pattern ... : reticular nodular ... consolidation) low ... Pulmonary #HRCT #CTChest ... Interpretation #Algorithm