#chylothorax.
is the presence of lymphatic fluid in the pleural space due to disruption or obstruction of thoracic duct or one of its tributaries.
#CAUSE: a)nontrauatic…:*malignancies like lymphoma which is the most common cause.**non malignant causes include: idiopathic;congenital&miscellaneous like cirrhosis; tuberclosis,sarcoidosis,amyloidosis&filiariasis.
b)traumatic: iatrogenic like cardiothoracic surgery&post oseohagal surgery;penetrating injuries.
#D/D :exudative pl.effusuion
*malignant pe.*cong h.failure
*hemothorax * empyma thoracis
pseudochylothorax
parapneumonic peAids related complex.
work up: diag is done from history, clinical exam findings,cxr,ct scan of chest& abd.lymphoangiography/lymphoscintiagraphy pleural fluid analysis for triglyceridetg/ cholesteol ratio