Spleen

Spleen


INTRODUCTION


Anatomy


The average adult spleen measures ~12 × 7 × 4 centimeters (L × B × T) with an average weight of 150 grams.


Normal adult spleen is convex superolaterally and concave inferomedially.


It lies between the diaphragm and the fundus of the stomach, with its long axis in the line of the tenth rib.


Modest inspiration depresses the central portion of left hemidiaphragm and spleen inferiorly for easy visualization.


An oblique section along the intercostal space avoids rib shadowing.


On USG, spleen has homogenous parenchyma with mid- to low-level echogenicity (Figure 5.1).


Normal splenic vein measures up to 10 millimeters in diameter.


Image


Figure 5.1 Depicting normal echotexture of spleen.


PATHOLOGIES


Splenomegaly


Mild to moderate: Infections such as TB, malaria, fungal, protozoal, and so on


  Portal hypertension


  AIDS


Marked: Myeloproliferative disorders


  Leukemia, lymphoma


  Infectious mononucleosis


  Myelofibrosis


Cystic lesions of spleen (Figure 5.2)


1.    Infectious cysts

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Nov 6, 2018 | Posted by in ULTRASONOGRAPHY | Comments Off on Spleen
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