Volume of fat within lymph node

Hello, I am new to 3D slicer and had a query. My project requires me to segment the lymph nodes and calculate the volume, which I was able to do with segment editor. Additionally, I have to calculate the volume of fat within the lymph node segmented, is that possible using 3D slicer?

You can compute volume (and many other properties) of each segment using Segment Statistics module.

I need to calculate the volume of the fat within the lymph, I used thresholding to isolate the fat from the segment I extracted, but it doesnt seem to segregate the fat within the lymph node but around it.

After you have segmented the lymph, in Masking section use that segment as Editable area. If you threshold after this then it will only affect the region within the lymps segment.