Let me see if I can help:

T12-L1 - You have a disc bulge

L1-L2 ~ You have a disc bulge with mild foramen narrowing on the right - the foramen is the hole that the nerves pass thru to get to the spinal cord

L2-L3 ~ You have a disc bulge with bilateral foramen narrowing

L3-L4 ~ You have a disc bulge with moderate foramen narrowing (bilateral)

L4-5 ~ You have a disc bulge with moderate foramen narrowing bilateral - I'm not sure about the endplates

L5-S1 ~ You have a disc bulge with bilateral foramen narrowing

The "multiple small retroperitoneal lymph nodes" ~ these are located in the lining of the stomach - therefore the recommendation that you get a CT-scan to further explore these. They want to rule out a tumor.

The Osteophyte complexes ~ these are bone spurs which may or may not be causing you pain.

The loss of disc space height means that the spaces between the discs is less than it should be because your discs are drying out, and kind of "squashing" making them bulge out. This makes the bony vertebra come closer together - so you kind of "shrink."

I hope this makes some kind of sense to you. God bless and take care. Hugs, Lee