8 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
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
Sellar / Pituitary Mass - Differential Diagnosis Algorithm
Adenoma - Primary Anterior Pituitary
 - Secreting
Differential Diagnosis Algorithm ... • TSH • LH ... Meningioma • Cyst ... Differential #Diagnosis #Algorithm ... #endocrinology
Hypogonadism Differential Diagnosis Algorithm
 • Low testosterone, Normal or low LH, Normal or low FSH -
Normal or low LH ... testosterone, Normal LH ... testosterone, Normal LH ... testosterone, Elevated LH ... #Testosterone #endocrinology
Cushing Syndrome Testing Algorithm
INDICATIONS FOR TESTING:
 • Suspected Cushing syndrome (central obesity, muscle weakness, refractory hypertension)
Testing:
Syndrome Testing Algorithm ... Urine Free by LC-MS ... Syndrome #diagnosis #algorithm ... #endocrinology
Causes of Male Infertility - Differential Diagnosis Algorithm
Sperm Transport:
 • Vasectomy
 • Cystic fibrosis gene mutation
Differential Diagnosis Algorithm ... Vasectomy • Cystic ... Ejaculatory duct cysts ... hypogonadism) Low FSH/LH ... problem) High FSH/LH
Menstrual Cycle Physiology: Correlating the Ovarian and Uterine Cycles
Note: Some charts show different relative levels of
gonadotropins (LH ... Triggered mostly by LH ... pathophysiology #comparison ... #endocrinology