Hi Sidse,
I agree that we have to distinguish between specifics of different tissues. To teach those is our task as trainers. However, case studies are practical and according to my own experience, tissues cooperate, cause each other to react etc., and this can't be divided meaningfully. Same is true for constellations, of which there are much more than the few described, and we have the opportunity to do our own research when cases are not "cut down" to fit just one definition.

What needs to make sense is the connection of biological function, emotions & thoughts.
Submitted case studies need to be reviewed and discussed, which is usually done by the MT (inside a course) or inside the community.

I wrote above that by the functions of tiki, tags/links can be made to the tissues involved in a case, and of course can be clarified how they do.
As an example, I had a breast cancer client who had both (diagnosed) ((Endocrine - Pituitary Gland - Anterior Lobe|pituitary)) overfunction ("need to save/nurture her family") by her identity, leading to worry ( ((Reproductive - Mammary Glands|breast glands)) ). These are general patterns - she always had to take care of all. UDINs were traumatic separations ( ((Reproductive - Milk Ducts and Mamilla|milk ducts)) ) from her husband when he died, and of a dog that she had saved, cared for, and which also died. Yet, her META-meaning was a new balance between freedom (her symptoms got much better on a vacation, and later when some domestic triggers were dissolved) and being connected to her loved ones.
Make sense?

I propose that when different tissues are involved, to number them 1,2,3... and try to show their significance in the pattern.