You might search for information using some of the alternate names described in
this article:
Gelatinous degeneration is generally diagnosed in bone marrow biopsy specimens by the presence of a focal or generalized extracellular deposition of a gelatinous material, identified as hyaluronic acid, in association with fat atrophy and marrow hypoplasia. This disorder has been referred as serous atrophy, mucoid degeneration and starvation marrow.
I also see reference to the phrase
gelatinous transformation.