50 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... Nodular LCH: - Sarcoidosis ... Cystic LCH: - LAM ... LIP #Clinical #Diagnosis ... #Differential #Comparison
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
LCH: multiple round ... Cystic #Pattern #Comparison
Lung Nodules - Differential Diagnosis by Distribution
 • Centrilobular: Hypersensitivity Pneumonitis, RB-ILD, Pneumoconiosis, Infectious Bronchiolitis, Vasculitis,
- Differential Diagnosis ... Septic emboli, LCH ... #Differential #Diagnosis
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
histiocytosis (LCH ... Cystic #Pattern #Comparison
Menstrual Cycle Physiology: Ovarian Cycle – Brief Overview
LH and FSH are required for follicular development and
Brief Overview LH ... granulosa cells - LH ... following ovulation -> LH ... -> Inhibit FSH/LH ... #OvarianCycle #pathophysiology
Comparison of Causes of Salt-Wasting in Infancy
 - PHA 1
 - PHA 3
 - 21-OH CAH
Comparison of Causes ... CAH - X-Linked AHC ... Wasting #Infancy #Comparison ... #differential #diagnosis
Diabetes Insipidus vs Syndrome of Inappropriate ADH (SIADH) - Comparison Table

Diabetes Insipidus - Inadequate ADH
SIADH -
ADH (SIADH) - Comparison ... Insipidus #SIADH #Comparison ... #Table #Pathophysiology ... Signs #Symptoms #Diagnosis
Intracranial Hemorrhages (ICH)

Epidural Hematoma vs Subdural Hematoma vs Subarachnoid Hemorrhage vs Intraparenchymal Hemorrhage

#Diagnosis #Radiology #Comparison #ICH
Intracranial Hemorrhages (ICH ... Hemorrhage #Diagnosis ... #Radiology #Comparison ... #ICH #Intracranial
Histiocytosis - Langerhans cell histiocytosis (LCH), Erdheim-Chester disease (ECD), Rosai-Dorfman disease (RDD)
Comparison of Features by Age,
histiocytosis (LCH ... disease (RDD) Comparison ... Histiocytosis #diagnosis ... #comparison #table ... features #management #LCH
Menstrual Cycle Physiology: Ovarian Cycle – Ovulation Explained

Around Day 14, estrogen exerts sudden +++ positive feedback
understood) -> surge in LH ... production and release LH ... 36 hours after LH ... #OvarianCycle #pathophysiology