27 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Nodular LCH: - Sarcoidosis ... Cystic LCH: - LAM ... : round cysts, evenly ... #Cysts #Differential ... #Comparison #Table
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
(LAM): uniform cysts ... LCH: multiple round ... bizarre shaped cysts ... LowAttenuation #Cystic ... Pattern #Comparison #Table
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
histiocytosis (LCH ... multiple thick walled cysts ... (LAM): regular cysts ... LowAttenuation #Cystic ... Pattern #Comparison #Table
Most Common Breast Masses - Comparison between Fibroadenoma, Cysts and Cancer

#Diagnosis #Oncology #Breast #Masses #Comparison #Table
Common Breast Masses ... Fibroadenoma, Cysts ... Oncology #Breast #Masses ... #Comparison #Table ... #Fibroadenoma #Cysts
Sellar / Pituitary Mass - Differential Diagnosis Algorithm
Adenoma - Primary Anterior Pituitary
 - Secreting
• TSH • LH ... Meningioma • Cyst ... Diagnosis #Algorithm #endocrinology ... #causes
Menstrual Cycle Physiology: Ovarian Cycle – Ovulation Explained

Around Day 14, estrogen exerts sudden +++ positive feedback
understood) -> surge in LH ... production and release LH ... causes: • Increased ... 36 hours after LH ... pathophysiology #Ovulation #endocrinology
Autoantibodies in Rheumatology
 • Lupus (SLE): ANA (anti-nuclear antibody), dsDNA (double-stranded DNA), Anti-Smith, Anti-Ro (SSA) and
Anticoagulant (LAC ... Rheumatoid Factor (RF), Cyclic ... #associations #table
Short Stature - Differential Diagnosis Algorithm
Normal Variant, Normal Puberty Onset (BA = CA)
 • Familial Short
Cystic Fibrosis, ... Diagnosis #Algorithm #endocrinology ... #causes #pediatrics
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
low attenuation (table ... The cystic pattern ... When the cysts have ... seen and in many cases
Cystic versus Reticular
It can be difficult to determine whether we are dealing with a reticular pattern
Cystic versus Reticular ... histiocytosis (LCH ... LCH is called a ... cystic disease. ... In many of such cases