BASIC CHEST RADIOLOGY 3

• Diffuse disease of the lung is most marked in the mid and lower zones, as this is where the x- rays are going through most lung volume.

• Some diseases have an upper lobe preponderance.

TBRADIATION-CONFINED TO SIDE OD RADIATION FIELDALVEOLITIS-EXTRINSIC ALLERGIC MORE MID ZONEANKYLOSING SPONDYLITISSARCOIDOSISSILICOSIS-TOGETHER WITH PMFHISTIOCYTOSIS

WIDESPREAD INTERSTITIAL SHADOWING IS USUALLY FIBROSIS and associated with volume loss.Main reason for normal/large volume with fibrosis is usually COPDA few rare causes are HISTIOCYTOSIS,NEUROFIBROMATOSIS, AND LLYMPHANGIOMYOMATOSIS

OTHER CAUSESCOLLAGEN VASCULAR DALVEOLITIS UIPRADIATIONDRUGSSICKLE, SCLERODERMA

COLLAPSE-VOLUME LOSSEFFUSION-OFTEN WITH PASSIVE COLLAPSE AND NO SHIFTPNEUMONIAPNEUMONECTOMY

REVERSE PULMONARY OEDEMAPULMONARY EOSINOPHILIASARCOIDPULMONARY CONTUSION

MULTIPLE CALCIFIED PLEURAL PLAQUESASBESTOS PLAQUES-NOT ASBESTOSIS

UNILATERAL PLEURAL CALCIFICATIONTBHAEMATOMA

ANTERIOR MEDIASTINAL MASSALWAYS INCLUDE TUMOUR AND ANEURYSM IN ALL DIFFERENTIAL OF MEDIASTINAL MASS.THEN THINK ANANTOMICALLYTUMOURTERRATODERMOID-ALSO SEMINOMATHYMIC TUMOURTHYROID

ANEURYSM OF AORTIC ARCH

MIDDLE MEDIASTINUMLYMPH NODESCYSTS-ENTERIC/BRONCHOGENIC

POSTERIOR MEDIASTINUMNEUROGENICABSCESSEXTRAMEDULLARY HAEMOPOIESISMETASTASE

RT CARDIOPHRENIC MASSFAT PADPERICARDIAL CYSTMORGAGNI HERNIA