She didn't like the way the spleen felt, and did an ultrasound.
Blood tests negative for infection or abnormal cells, and subsequent rectal was normal.
However, the fluid and spleen abnormalities from the ultrasound have me concerned. The vet says if it is cancer, there is nothing to be done. Horse seems healthy, vigorous, shinny coat. Hi, The spleen is the main organ in the body maintaining the quality of the red blood cells which wear out after any cycles of taking up oxygen and discharging it to the cells. The whole blood supply travels through the Spleen and it checks the cells one by one and digests any which have reached the end of the usefull life.