The spleen is located posterior to the stomach, when the stomach has been removed from a specimine you are able to see the spleen clearly - it is an intraperitoneal organ.
specific location
Upper Left Quadrant
it’s located between LHS ribs 8-11 with its long axis along rib 10

lymphatics of the spleen
Splenic hilar nodes -> pancreatico-splenic nodes -> coeliac nodes
.N. supply of the spleen
Sympathetics T5-9, parasympathetics from vagus via coeliac plexus
Arterial supply of the spleen
Venous supply of the spleen