MIRA3006 Lecture Notes - Lecture 4: Portal Hypertension, White Pulp, Splenomegaly
5 Aug 2018
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Document Summary
On non-enhanced ct scans, the parenchyma of the spleen is homogeneous with ct densities of. During the first 45s after iv contrast injection, the spleen shows an inhomogeneous, sometimes striped, contrast enhancement pattern caused by differential enhancement of the red and white pulp. Associated to infections, tuberculosis haematologic disorders and portal hypertension. It could be difficult to observe in radiography but can elevate the left diaphragm and displace the stomach to the middle line. Can help to identify the cause of enlargement showing the tumour/abscess or cyst. It can show lymph nodes suggestive of lymphoma. The vascular structures can be also studied to identify if the cause is portal hypertension. Can be also a consequence of palpation during an infection or leukaemia. Ct: shows the hematomas, liquid in the margin of the spleen, extravasation of contrast. Sometimes it is not necessary as there is rapid loss of blood.
